Anthropic Release Notes

All Anthropic Release Notes (533)

• April 2026

  • No date parsed from source.
  • First seen by Releasebot:
    Apr 22, 2026
  

  Claude Code by Anthropic

  2.1.117

  Claude Code ships faster startup, stronger plugin management, better session resume and model persistence, improved OpenTelemetry, and major macOS, Linux, Windows, and API fixes. It also adds experimental Advisor tool updates, safer auth handling, and more reliable context and subagent behavior.

  • Forked subagents can now be enabled on external builds by setting CLAUDE_CODE_FORK_SUBAGENT=1
  • Agent frontmatter mcpServers are now loaded for main-thread agent sessions via --agent
  • Improved /model: selections now persist across restarts even when the project pins a different model, and the startup header shows when the active model comes from a project or managed-settings pin
  • The /resume command now offers to summarize stale, large sessions before re-reading them, matching the existing --resume behavior
  • Faster startup when both local and claude.ai MCP servers are configured (concurrent connect now default)
  • plugin install on an already-installed plugin now installs any missing dependencies instead of stopping at "already installed"
  • Plugin dependency errors now say "not installed" with an install hint, and claude plugin marketplace add now auto-resolves missing dependencies from configured marketplaces
  • Managed-settings blockedMarketplaces and strictKnownMarketplaces are now enforced on plugin install, update, refresh, and autoupdate
  • Advisor Tool (experimental): dialog now carries an "experimental" label, learn-more link, and startup notification when enabled; sessions no longer get stuck with "Advisor tool result content could not be processed" errors on every prompt and /compact
  • The cleanupPeriodDays retention sweep now also covers ~/.claude/tasks/, ~/.claude/shell-snapshots/, and ~/.claude/backups/
  • OpenTelemetry: user_prompt events now include command_name and command_source for slash commands; cost.usage, token.usage, api_request, and api_error now include an effort attribute when the model supports effort levels. Custom/MCP command names are redacted unless OTEL_LOG_TOOL_DETAILS=1 is set
  • Native builds on macOS and Linux: the Glob and Grep tools are replaced by embedded bfs and ugrep available through the Bash tool — faster searches without a separate tool round-trip (Windows and npm-installed builds unchanged)
  • Windows: cached where.exe executable lookups per process for faster subprocess launches
  • Default effort for Pro/Max subscribers on Opus 4.6 and Sonnet 4.6 is now high (was medium)
  • Fixed Plain-CLI OAuth sessions dying with "Please run /login" when the access token expires mid-session — the token is now refreshed reactively on 401
  • Fixed WebFetch hanging on very large HTML pages by truncating input before HTML-to-markdown conversion
  • Fixed a crash when a proxy returns HTTP 204 No Content — now surfaces a clear error instead of a TypeError
  • Fixed /login having no effect when launched with CLAUDE_CODE_OAUTH_TOKEN env var and that token expires
  • Fixed prompt-input undo (Ctrl+_) doing nothing immediately after typing, and skipping a state on each undo step
  • Fixed NO_PROXY not being respected for remote API requests when running under Bun
  • Fixed rare spurious escape/return triggers when key names arrive as coalesced text over slow connections
  • Fixed SDK reload_plugins reconnecting all user MCP servers serially
  • Fixed Bedrock application-inference-profile requests failing with 400 when backed by Opus 4.7 with thinking disabled
  • Fixed MCP elicitation/create requests auto-cancelling in print/SDK mode when the server finishes connecting mid-turn
  • Fixed subagents running a different model than the main agent incorrectly flagging file reads with a malware warning
  • Fixed idle re-render loop when background tasks are present, reducing memory growth on Linux
  • [VSCode] Fixed "Manage Plugins" panel breaking when multiple large marketplaces are configured
  • Fixed Opus 4.7 sessions showing inflated /context percentages and autocompacting too early — Claude Code was computing against a 200K context window instead of Opus 4.7's native 1M

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• April 2026

  • No date parsed from source.
  • First seen by Releasebot:
    Apr 21, 2026
  

  Claude Code by Anthropic

  2.1.116

  Claude Code releases a broad polish and reliability update with much faster /resume on large sessions, quicker MCP startup, smarter slash-command search, inline thinking progress, improved terminal behavior, and fixes for plugins, usage reporting, security checks, and large-session handling.

  • /resume on large sessions is significantly faster (up to 67% on 40MB+ sessions) and handles sessions with many dead-fork entries more efficiently
  • Faster MCP startup when multiple stdio servers are configured; resources/templates/list is now deferred to first @-mention
  • Smoother fullscreen scrolling in VS Code, Cursor, and Windsurf terminals — /terminal-setup now configures the editor's scroll sensitivity
  • Thinking spinner now shows progress inline ("still thinking", "thinking more", "almost done thinking"), replacing the separate hint row
  • /config search now matches option values (e.g. searching "vim" finds the Editor mode setting)
  • /doctor can now be opened while Claude is responding, without waiting for the current turn to finish
  • /reload-plugins and background plugin auto-update now auto-install missing plugin dependencies from marketplaces you've already added
  • Bash tool now surfaces a hint when gh commands hit GitHub's API rate limit, so agents can back off instead of retrying
  • The Usage tab in Settings now shows your 5-hour and weekly usage immediately and no longer fails when the usage endpoint is rate-limited
  • Agent frontmatter hooks: now fire when running as a main-thread agent via --agent
  • Slash command menu now shows "No commands match" when your filter has zero results, instead of disappearing
  • Security: sandbox auto-allow no longer bypasses the dangerous-path safety check for rm/rmdir targeting /, $HOME, or other critical system directories
  • Fixed Devanagari and other Indic scripts rendering with broken column alignment in the terminal UI
  • Fixed Ctrl+- not triggering undo in terminals using the Kitty keyboard protocol (iTerm2, Ghostty, kitty, WezTerm, Windows Terminal)
  • Fixed Cmd+Left/Right not jumping to line start/end in terminals that use the Kitty keyboard protocol (Warp fullscreen, kitty, Ghostty, WezTerm)
  • Fixed Ctrl+Z hanging the terminal when Claude Code is launched via a wrapper process (e.g. npx, bun run)
  • Fixed scrollback duplication in inline mode where resizing the terminal or large output bursts would repeat earlier conversation history
  • Fixed modal search dialogs overflowing the screen at short terminal heights, hiding the search box and keyboard hints
  • Fixed scattered blank cells and disappearing composer chrome in the VS Code integrated terminal during scrolling
  • Fixed an intermittent API 400 error related to cache control TTL ordering that could occur when a parallel request completed during request setup
  • Fixed /branch rejecting conversations with transcripts larger than 50MB
  • Fixed /resume silently showing an empty conversation on large session files instead of reporting the load error
  • Fixed /plugin Installed tab showing the same item twice when it appears under Needs attention or Favorites
  • Fixed /update and /tui not working after entering a worktree mid-session

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• Apr 20, 2026

  • Date parsed from source:
    Apr 20, 2026
  • First seen by Releasebot:
    Apr 21, 2026
  

  Claude Developer Platform by Anthropic

  April 20, 2026

  Claude Developer Platform retires Claude Haiku 3 and recommends upgrading to Claude Haiku 4.5.

  • We've retired the Claude Haiku 3 model (claude-3-haiku-20240307). All requests to this model will now return an error. We recommend upgrading to Claude Haiku 4.5.

  Original source
• April 2026

  • No date parsed from source.
  • First seen by Releasebot:
    Apr 19, 2026
  

  Claude Code by Anthropic

  2.1.114

  Claude Code fixes a permission dialog crash when a teammate requests tool permission.

  • Fixed a crash in the permission dialog when an agent teams teammate requested tool permission

  Original source
• April 2026

  • No date parsed from source.
  • First seen by Releasebot:
    Apr 17, 2026
  

  Claude Code by Anthropic

  2.1.112

  Claude Code fixes the "claude-opus-4-7 is temporarily unavailable" issue in auto mode.

  • Fixed "claude-opus-4-7 is temporarily unavailable" for auto mode

  Original source
• April 2026

  • No date parsed from source.
  • First seen by Releasebot:
    Apr 17, 2026
  

  Claude Code by Anthropic

  2.1.111

  Claude Code releases Opus 4.7 xhigh, adds Auto mode for Max subscribers, and expands controls with /effort, /ultrareview, and a new terminal-matching theme. It also reduces permission prompts, improves Windows support, and fixes a long list of editor and terminal issues.

  Claude Opus 4.7 xhigh is now available! Use /effort to tune speed vs. intelligence

  • Auto mode is now available for Max subscribers when using Opus 4.7
  • Added xhigh effort level for Opus 4.7, sitting between high and max. Available via /effort, --effort, and the model picker; other models fall back to high
  • /effort now opens an interactive slider when called without arguments, with arrow-key navigation between levels and Enter to confirm
  • Added "Auto (match terminal)" theme option that matches your terminal's dark/light mode — select it from /theme
  • Added /less-permission-prompts skill — scans transcripts for common read-only Bash and MCP tool calls and proposes a prioritized allowlist for .claude/settings.json
  • Added /ultrareview for running comprehensive code review in the cloud using parallel multi-agent analysis and critique — invoke with no arguments to review your current branch, or /ultrareview <PR#> to fetch and review a specific GitHub PR
  • Auto mode no longer requires --enable-auto-mode
  • Windows: PowerShell tool is progressively rolling out. Opt in or out with CLAUDE_CODE_USE_POWERSHELL_TOOL. On Linux and macOS, enable with CLAUDE_CODE_USE_POWERSHELL_TOOL=1 (requires pwsh on PATH)
  • Read-only bash commands with glob patterns (e.g. ls *.ts) and commands starting with cd <project-dir> && no longer trigger a permission prompt
  • Suggest the closest matching subcommand when claude <word> is invoked with a near-miss typo (e.g. claude udpate → "Did you mean claude update?")
  • Plan files are now named after your prompt (e.g. fix-auth-race-snug-otter.md) instead of purely random words
  • Improved /setup-vertex and /setup-bedrock to show the actual settings.json path when CLAUDE_CONFIG_DIR is set, seed model candidates from existing pins on re-run, and offer a "with 1M context" option for supported models
  • /skills menu now supports sorting by estimated token count — press t to toggle
  • Ctrl+U now clears the entire input buffer (previously: delete to start of line); press Ctrl+Y to restore
  • Ctrl+L now forces a full screen redraw in addition to clearing the prompt input
  • Transcript view footer now shows [ (dump to scrollback) and v (open in editor) shortcuts
  • The "+N lines" marker for truncated long pastes is now a full-width rule for easier scanning
  • Headless --output-format stream-json now includes plugin_errors on the init event when plugins are demoted for unsatisfied dependencies
  • Added OTEL_LOG_RAW_API_BODIES environment variable to emit full API request and response bodies as OpenTelemetry log events for debugging
  • Suppressed spurious decompression, network, and transient error messages that could appear in the TUI during normal operation
  • Reverted the v2.1.110 cap on non-streaming fallback retries — it traded long waits for more outright failures during API overload
  • Fixed terminal display tearing (random characters, drifting input) in iTerm2 + tmux setups when terminal notifications are sent
  • Fixed @ file suggestions re-scanning the entire project on every turn in non-git working directories, and showing only config files in freshly-initialized git repos with no tracked files
  • Fixed LSP diagnostics from before an edit appearing after it, causing the model to re-read files it just edited
  • Fixed tab-completing /resume immediately resuming an arbitrary titled session instead of showing the session picker
  • Fixed /context grid rendering with extra blank lines between rows
  • Fixed /clear dropping the session name set by /rename, causing statusline output to lose session_name
  • Improved plugin error handling: dependency errors now distinguish conflicting, invalid, and overly complex version requirements; fixed stale resolved versions after plugin update; plugin install now recovers from interrupted prior installs
  • Fixed Claude calling a non-existent commit skill and showing "Unknown skill: commit" for users without a custom /commit command
  • Fixed 429 rate-limit errors on Bedrock/Vertex/Foundry referencing status.claude.com (it only covers Anthropic-operated providers)
  • Fixed feedback surveys appearing back-to-back after dismissing one
  • Fixed bare URLs in bash/PowerShell/MCP tool output being unclickable when the terminal wraps them across lines
  • Windows: CLAUDE_ENV_FILE and SessionStart hook environment files now apply (previously a no-op)
  • Windows: permission rules with drive-letter paths are now correctly root-anchored, and paths differing only by drive-letter case are recognized as the same path

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• Apr 17, 2026

  • Date parsed from source:
    Apr 17, 2026
  • First seen by Releasebot:
    Apr 19, 2026
  

  Claude Apps by Anthropic

  April 17, 2026

  Claude Apps launches Claude Design, a new Anthropic Labs tool for creating designs, prototypes, slides, and one-pagers with Claude.

  Claude Design by Anthropic Labs

  With Opus 4.7, we also launched Claude Design, a new Anthropic Labs product that lets you collaborate with Claude to create visual outputs like designs, prototypes, slides, and one-pagers. For more information, see Get started with Claude Design .

  Original source
• Apr 17, 2026

  • Date parsed from source:
    Apr 17, 2026
  • First seen by Releasebot:
    Apr 18, 2026
  

  Claude by Anthropic

  April 17, 2026

  Claude launches Claude Design for collaborating with Claude to create designs, prototypes, slides, and one-pagers.

  Claude Design by Anthropic Labs

  With Opus 4.7, we also launched Claude Design, a new Anthropic Labs product that lets you collaborate with Claude to create visual outputs like designs, prototypes, slides, and one-pagers. For more information, see Get started with Claude Design .

  Original source
• Apr 17, 2026

  • Date parsed from source:
    Apr 17, 2026
  • First seen by Releasebot:
    Apr 18, 2026
  

  Anthropic

  Introducing Claude Design by Anthropic Labs

  Anthropic launches Claude Design, a new Anthropic Labs product for creating polished visual work with Claude, including prototypes, slides, one-pagers, and more. It rolls out in research preview for Pro, Max, Team, and Enterprise users and adds sharing, export, and Claude Code handoff support.

  Today, we’re launching Claude Design, a new Anthropic Labs product that lets you collaborate with Claude to create polished visual work like designs, prototypes, slides, one-pagers, and more.

  Claude Design is powered by our most capable vision model, Claude Opus 4.7, and is available in research preview for Claude Pro, Max, Team, and Enterprise subscribers. We’re rolling out to users gradually throughout the day.

  Design with Claude

  Even experienced designers have to ration exploration—there's rarely time to prototype a dozen directions, so you limit yourself to a few. And for founders, product managers, and marketers with an idea but not a design background, creating and sharing those ideas can be daunting.

  Claude Design gives designers room to explore widely and everyone else a way to produce visual work. Describe what you need and Claude builds a first version. From there, you refine through conversation, inline comments, direct edits, or custom sliders (made by Claude) until it’s right. When given access, Claude can also apply your team’s design system to every project automatically, so the output is consistent with the rest of your company’s designs.

  Teams have been using Claude Design for:

  • Realistic prototypes: Designers can turn static mockups into easily-shareable interactive prototypes to gather feedback and user-test, without code review or PRs.
  • Product wireframes and mockups: Product Managers can sketch out feature flows and hand them off to Claude Code for implementation, or share them with designers to refine further.
  • Design explorations: Designers can quickly create a wide range of directions to explore.
  • Pitch decks and presentations: Founders and Account Executives can go from a rough outline to a complete, on-brand deck in minutes, and then export as a PPTX or send to Canva.
  • Marketing collateral: Marketers can create landing pages, social media assets, and campaign visuals, then loop in designers to polish.
  • Frontier design: Anyone can build code-powered prototypes with voice, video, shaders, 3D and built-in AI.

  How it works

  Claude Design follows a natural creative flow.

  Your brand, built in.

  During onboarding, Claude builds a design system for your team by reading your codebase and design files. Every project after that uses your colors, typography, and components automatically. You can refine the system over time, and teams can maintain more than one.

  Import from anywhere.

  Start from a text prompt, upload images and documents (DOCX, PPTX, XLSX), or point Claude at your codebase. You can also use the web capture tool to grab elements directly from your website so prototypes look like the real product.

  Refine with fine-grained controls.

  Comment inline on specific elements, edit text directly, or use adjustment knobs to tweak spacing, color, and layout live. Then ask Claude to apply your changes across the full design.

  Collaborate.

  Designs have organization-scoped sharing. You can keep a document private, share it so anyone in your organization with the link can view it, or grant edit access so colleagues can modify the design and chat with Claude together in a group conversation.

  Export anywhere.

  Share designs as an internal URL within your organization, save as a folder, or export to Canva, PDF, PPTX, or standalone HTML files.

  Handoff to Claude Code.

  When a design is ready to build, Claude packages everything into a handoff bundle that you can pass to Claude Code with a single instruction.

  Over the coming weeks, we'll make it easier to build integrations with Claude Design, so you can connect it to more of the tools your team already uses.

  We’ve loved collaborating with Anthropic over the past couple of years and share a deep focus on making complex things simple. At Canva, our mission has always been to empower the world to design, and that means bringing Canva to wherever ideas begin. We’re excited to build on our collaboration with Claude, making it seamless for people to bring ideas and drafts from Claude Design into Canva, where they instantly become fully editable and collaborative designs ready to refine, share, and publish.

  Melanie Perkins
  Co-Founder and CEO, Canva

  Brilliant's intricate interactivity and animations are historically painful to prototype, but Claude Design's ability to turn static designs into interactive prototypes has been a step change for us. Our most complex pages, which took 20+ prompts to recreate in other tools, only required 2 prompts in Claude Design. Including design intent in Claude Code handoffs has made the jump from prototype to production seamless.

  Olivia Xu
  Senior Product Designer, Brilliant

  Claude Design has made prototyping dramatically faster for our team, enabling live design during conversations. We've gone from a rough idea to a working prototype before anyone leaves the room, and the output stays true to our brand and design guidelines. What used to take a week of back-and-forth between briefs, mockups, and review rounds now happens in a single conversation.

  Aneesh Kethini
  Product Manager, Datadog

  Get started

  Claude Design is available for Claude Pro, Max, Team, and Enterprise subscribers. Access is included with your plan and uses your subscription limits, with the option to continue beyond those limits by enabling extra usage.

  For Enterprise organizations, Claude Design is off by default. Admins can enable it in Organization settings.

  Start designing at claude.ai/design.

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• April 2026

  • No date parsed from source.
  • First seen by Releasebot:
    Apr 16, 2026
  

  Claude Code by Anthropic

  2.1.110

  Claude Code adds /tui fullscreen rendering, mobile push notifications, cleaner transcript and focus controls, better plugin and doctor workflows, smarter resume and Remote Control support, plus a long list of fixes for MCP, sessions, editor actions, and performance.

  Added

  • Added /tui command and tui setting — run /tui fullscreen to switch to flicker-free rendering in the same conversation
  • Added push notification tool — Claude can send mobile push notifications when Remote Control and "Push when Claude decides" config are enabled
  • Changed Ctrl+O to toggle between normal and verbose transcript only; focus view is now toggled separately with the new /focus command
  • Added autoScrollEnabled config to disable conversation auto-scroll in fullscreen mode
  • Added option to show Claude's last response as commented context in the Ctrl+G external editor (enable via /config)
  • Improved /plugin Installed tab — items needing attention and favorites appear at the top, disabled items are hidden behind a fold, and f favorites the selected item
  • Improved /doctor to warn when an MCP server is defined in multiple config scopes with different endpoints
  • --resume/--continue now resurrects unexpired scheduled tasks
  • /context, /exit, and /reload-plugins now work from Remote Control (mobile/web) clients
  • Write tool now informs the model when you edit the proposed content in the IDE diff before accepting
  • Bash tool now enforces the documented maximum timeout instead of accepting arbitrarily large values
  • SDK/headless sessions now read TRACEPARENT/TRACESTATE from the environment for distributed trace linking
  • Session recap is now enabled for users with telemetry disabled (Bedrock, Vertex, Foundry, DISABLE_TELEMETRY). Opt out via /config or CLAUDE_CODE_ENABLE_AWAY_SUMMARY=0.

  Fixed

  • Fixed MCP tool calls hanging indefinitely when the server connection drops mid-response on SSE/HTTP transports
  • Fixed non-streaming fallback retries causing multi-minute hangs when the API is unreachable
  • Fixed session recap, local slash-command output, and other system status lines not appearing in focus mode
  • Fixed high CPU usage in fullscreen when text is selected while a tool is running
  • Fixed plugin install not honoring dependencies declared in plugin.json when the marketplace entry omits them; /plugin install now lists auto-installed dependencies
  • Fixed skills with disable-model-invocation: true failing when invoked via /<skill> mid-message
  • Fixed --resume sometimes showing the first prompt instead of the /rename name for sessions still running or exited uncleanly
  • Fixed queued messages briefly appearing twice during multi-tool-call turns
  • Fixed session cleanup not removing the full session directory including subagent transcripts
  • Fixed dropped keystrokes after the CLI relaunches (e.g. /tui, provider setup wizards)
  • Fixed garbled startup rendering in macOS Terminal.app and other terminals that don't support synchronized output
  • Hardened "Open in editor" actions against command injection from untrusted filenames
  • Fixed PermissionRequest hooks returning updatedInput not being re-checked against permissions.deny rules; setMode:'bypassPermissions' updates now respect disableBypassPermissionsMode
  • Fixed PreToolUse hook additionalContext being dropped when the tool call fails
  • Fixed stdio MCP servers that print stray non-JSON lines to stdout being disconnected on the first stray line (regression in 2.1.105)
  • Fixed headless/SDK session auto-title firing an extra Haiku request when CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC or CLAUDE_CODE_DISABLE_TERMINAL_TITLE is set
  • Fixed potential excessive memory allocation when piped (non-TTY) Ink output contains a single very wide line
  • Fixed /skills menu not scrolling when the list overflows the modal in fullscreen mode
  • Fixed Remote Control sessions showing a generic error instead of prompting for re-login when the session is too old
  • Fixed Remote Control session renames from claude.ai not persisting the title to the local CLI session

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• Apr 16, 2026

  • Date parsed from source:
    Apr 16, 2026
  • First seen by Releasebot:
    Apr 17, 2026
  

  Claude by Anthropic

  April 16, 2026

  Claude launches Opus 4.7, with stronger coding, better long-running software tasks and higher-resolution vision.

  Claude Opus 4.7 launch

  Our latest model, Claude Opus 4.7, is now generally available. Opus 4.7 shows improvements in software engineering and complex, long-running coding tasks, as well as better vision, allowing it to see images in higher resolution. For more information, see our blog post: Introducing Claude Opus 4.7 .

  Original source
• Apr 16, 2026

  • Date parsed from source:
    Apr 16, 2026
  • First seen by Releasebot:
    Apr 16, 2026
  

  Anthropic

  Introducing Claude Opus 4.7

  Anthropic releases Claude Opus 4.7 as a generally available upgrade with stronger software engineering, better vision, sharper instruction following, and more reliable long-running agent work. It also adds new effort controls, task budgets, and Claude Code review tools.

  Our latest model, Claude Opus 4.7, is now generally available.

  Opus 4.7 is a notable improvement on Opus 4.6 in advanced software engineering, with particular gains on the most difficult tasks. Users report being able to hand off their hardest coding work—the kind that previously needed close supervision—to Opus 4.7 with confidence. Opus 4.7 handles complex, long-running tasks with rigor and consistency, pays precise attention to instructions, and devises ways to verify its own outputs before reporting back.

  The model also has substantially better vision: it can see images in greater resolution. It’s more tasteful and creative when completing professional tasks, producing higher-quality interfaces, slides, and docs. And—although it is less broadly capable than our most powerful model, Claude Mythos Preview—it shows better results than Opus 4.6 across a range of benchmarks:

  Last week we announced Project Glasswing, highlighting the risks—and benefits—of AI models for cybersecurity. We stated that we would keep Claude Mythos Preview’s release limited and test new cyber safeguards on less capable models first. Opus 4.7 is the first such model: its cyber capabilities are not as advanced as those of Mythos Preview (indeed, during its training we experimented with efforts to differentially reduce these capabilities). We are releasing Opus 4.7 with safeguards that automatically detect and block requests that indicate prohibited or high-risk cybersecurity uses. What we learn from the real-world deployment of these safeguards will help us work towards our eventual goal of a broad release of Mythos-class models.

  Security professionals who wish to use Opus 4.7 for legitimate cybersecurity purposes (such as vulnerability research, penetration testing, and red-teaming) are invited to join our new Cyber Verification Program.

  Opus 4.7 is available today across all Claude products and our API, Amazon Bedrock, Google Cloud’s Vertex AI, and Microsoft Foundry. Pricing remains the same as Opus 4.6: $5 per million input tokens and $25 per million output tokens. Developers can use claude-opus-4-7 via the Claude API.

  Testing Claude Opus 4.7

  Claude Opus 4.7 has garnered strong feedback from our early-access testers:

  In early testing, we’re seeing the potential for a significant leap for our developers with Claude Opus 4.7. It catches its own logical faults during the planning phase and accelerates execution, far beyond previous Claude models. As a financial technology platform serving millions of consumers and businesses at significant scale, this combination of speed and precision could be game-changing: accelerating development velocity for faster delivery of the trusted financial solutions our customers rely on every day.

  Anthropic has already set the standard for coding models, and Claude Opus 4.7 pushes that further in a meaningful way as the state-of-the-art model on the market. In our internal evals, it stands out not just for raw capability, but for how well it handles real-world async workflows—automations, CI/CD, and long-running tasks. It also thinks more deeply about problems and brings a more opinionated perspective, rather than simply agreeing with the user.

  Claude Opus 4.7 is the strongest model Hex has evaluated. It correctly reports when data is missing instead of providing plausible-but-incorrect fallbacks, and it resists dissonant-data traps that even Opus 4.6 falls for. It’s a more intelligent, more efficient Opus 4.6: low-effort Opus 4.7 is roughly equivalent to medium-effort Opus 4.6.

  On our 93-task coding benchmark, Claude Opus 4.7 lifted resolution by 13% over Opus 4.6, including four tasks neither Opus 4.6 nor Sonnet 4.6 could solve. Combined with faster median latency and strict instruction following, it’s particularly meaningful for complex, long-running coding workflows. It cuts the friction from those multi-step tasks so developers can stay in the flow and focus on building.

  Based on our internal research-agent benchmark, Claude Opus 4.7 has the strongest efficiency baseline we’ve seen for multi-step work. It tied for the top overall score across our six modules at 0.715 and delivered the most consistent long-context performance of any model we tested. On General Finance—our largest module—it improved meaningfully on Opus 4.6, scoring 0.813 versus 0.767, while also showing the best disclosure and data discipline in the group. And on deductive logic, an area where Opus 4.6 struggled, Opus 4.7 is solid.

  Claude Opus 4.7 extends the limit of what models can do to investigate and get tasks done. Anthropic has clearly optimized for sustained reasoning over long runs, and it shows with market-leading performance. As engineers shift from working 1:1 with agents to managing them in parallel, this is exactly the kind of frontier capability that unlocks new workflows.

  We’re seeing major improvements in Claude Opus 4.7’s multimodal understanding, from reading chemical structures to interpreting complex technical diagrams. The higher resolution support is helping Solve Intelligence build best-in-class tools for life sciences patent workflows, from drafting and prosecution to infringement detection and invalidity charting.

  Claude Opus 4.7 takes long-horizon autonomy to a new level in Devin. It works coherently for hours, pushes through hard problems rather than giving up, and unlocks a class of deep investigation work we couldn't reliably run before.

  For Replit, Claude Opus 4.7 was an easy upgrade decision. For the work our users do every day, we observed it achieving the same quality at lower cost—more efficient and precise at tasks like analyzing logs and traces, finding bugs, and proposing fixes. Personally, I love how it pushes back during technical discussions to help me make better decisions. It really feels like a better coworker.

  Claude Opus 4.7 demonstrates strong substantive accuracy on BigLaw Bench for Harvey, scoring 90.9% at high effort with better reasoning calibration on review tables and noticeably smarter handling of ambiguous document editing tasks. It correctly distinguishes assignment provisions from change-of-control provisions, a task that has historically challenged frontier models. Substance was consistently rated as a strength across our evaluations: correct, thorough, and well-cited.

  Claude Opus 4.7 is a very impressive coding model, particularly for its autonomy and more creative reasoning. On CursorBench, Opus 4.7 is a meaningful jump in capabilities, clearing 70% versus Opus 4.6 at 58%.

  For complex multi-step workflows, Claude Opus 4.7 is a clear step up: plus 14% over Opus 4.6 at fewer tokens and a third of the tool errors. It’s the first model to pass our implicit-need tests, and it keeps executing through tool failures that used to stop Opus cold. This is the reliability jump that makes Notion Agent feel like a true teammate.

  In our evals, we saw a double-digit jump in accuracy of tool calls and planning in our core orchestrator agents. As users leverage Hebbia to plan and execute on use cases like retrieval, slide creation, or document generation, Claude Opus 4.7 shows the potential to improve agent decision-making in these workflows.

  On Rakuten-SWE-Bench, Claude Opus 4.7 resolves 3x more production tasks than Opus 4.6, with double-digit gains in Code Quality and Test Quality. This is a meaningful lift and a clear upgrade for the engineering work our teams are shipping every day.

  For CodeRabbit’s code review workloads, Claude Opus 4.7 is the sharpest model we’ve tested. Recall improved by over 10%, surfacing some of the most difficult-to-detect bugs in our most complex PRs, while precision remained stable despite the increased coverage. It’s a bit faster than GPT-5.4 xhigh on our harness, and we’re lining it up for our heaviest review work at launch.

  For Genspark’s Super Agent, Claude Opus 4.7 nails the three production differentiators that matter most: loop resistance, consistency, and graceful error recovery. Loop resistance is the most critical. A model that loops indefinitely on 1 in 18 queries wastes compute and blocks users. Lower variance means fewer surprises in prod. And Opus 4.7 achieves the highest quality-per-tool-call ratio we’ve measured.

  Claude Opus 4.7 is a meaningful step up for Warp. Opus 4.6 is one of the best models out there for developers, and this model is measurably more thorough on top of that. It passed Terminal Bench tasks that prior Claude models had failed, and worked through a tricky concurrency bug Opus 4.6 couldn't crack. For us, that’s the signal.

  Claude Opus 4.7 is the best model in the world for building dashboards and data-rich interfaces. The design taste is genuinely surprising—it makes choices I’d actually ship. It’s my default daily driver now.

  Claude Opus 4.7 is the most capable model we've tested at Quantium. Evaluated against leading AI models through our proprietary benchmarking solution, the biggest gains showed up where they matter most: reasoning depth, structured problem-framing, and complex technical work. Fewer corrections, faster iterations, and stronger outputs to solve the hardest problems our clients bring us.

  Claude Opus 4.7 feels like a real step up in intelligence. Code quality is noticeably improved, it’s cutting out the meaningless wrapper functions and fallback scaffolding that used to pile up, and fixes its own code as it goes. It’s the cleanest jump we’ve seen since the move from Sonnet 3.7 to the Claude 4 series.

  For the computer-use work that sits at the heart of XBOW’s autonomous penetration testing, the new Claude Opus 4.7 is a step change: 98.5% on our visual-acuity benchmark versus 54.5% for Opus 4.6. Our single biggest Opus pain point effectively disappeared, and that unlocks its use for a whole class of work where we couldn’t use it before.

  Claude Opus 4.7 is a solid upgrade with no regressions for Vercel. It’s phenomenal on one-shot coding tasks, more correct and complete than Opus 4.6, and noticeably more honest about its own limits. It even does proofs on systems code before starting work, which is new behavior we haven’t seen from earlier Claude models.

  Claude Opus 4.7 is very strong and outperforms Opus 4.6 with a 10% to 15% lift in task success for Factory Droids, with fewer tool errors and more reliable follow-through on validation steps. It carries work all the way through instead of stopping halfway, which is exactly what enterprise engineering teams need.

  Claude Opus 4.7 autonomously built a complete Rust text-to-speech engine from scratch—neural model, SIMD kernels, browser demo—then fed its own output through a speech recognizer to verify it matched the Python reference. Months of senior engineering, delivered autonomously. The step up from Opus 4.6 is clear, and the codebase is public.

  Claude Opus 4.7 passed three TBench tasks that prior Claude models couldn’t, and it’s landing fixes our previous best model missed, including a race condition. It demonstrates strong precision in identifying real issues, and surfaces important findings that other models either gave up on or didn’t resolve. In Qodo’s real-world code review benchmark, we observed top-tier precision.

  On Databricks’ OfficeQA Pro, Claude Opus 4.7 shows meaningfully stronger document reasoning, with 21% fewer errors than Opus 4.6 when working with source information. Across our agentic reasoning over data benchmarks, it is the best-performing Claude model for enterprise document analysis.

  For Ramp, Claude Opus 4.7 stands out in agent-team workflows. We’re seeing stronger role fidelity, instruction-following, coordination, and complex reasoning, especially on engineering tasks that span tools, codebases, and debugging context. Compared with Opus 4.6, it needs much less step-by-step guidance, helping us scale the internal agent workflows our engineering teams run.

  Claude Opus 4.7 is measurably better than Opus 4.6 for Bolt’s longer-running app-building work, up to 10% better in the best cases, without the regressions we’ve come to expect from very agentic models. It pushes the ceiling on what our users can ship in a single session.

  Below are some highlights and notes from our early testing of Opus 4.7:

  Instruction following.

  Opus 4.7 is substantially better at following instructions. Interestingly, this means that prompts written for earlier models can sometimes now produce unexpected results: where previous models interpreted instructions loosely or skipped parts entirely, Opus 4.7 takes the instructions literally. Users should re-tune their prompts and harnesses accordingly.

  Improved multimodal support.

  Opus 4.7 has better vision for high-resolution images: it can accept images up to 2,576 pixels on the long edge (~3.75 megapixels), more than three times as many as prior Claude models. This opens up a wealth of multimodal uses that depend on fine visual detail: computer-use agents reading dense screenshots, data extractions from complex diagrams, and work that needs pixel-perfect references.

  Real-world work.

  As well as its state-of-the-art score on the Finance Agent evaluation (see table above), our internal testing showed Opus 4.7 to be a more effective finance analyst than Opus 4.6, producing rigorous analyses and models, more professional presentations, and tighter integration across tasks. Opus 4.7 is also state-of-the-art on GDPval-AA, a third-party evaluation of economically valuable knowledge work across finance, legal, and other domains.

  Memory.

  Opus 4.7 is better at using file system-based memory. It remembers important notes across long, multi-session work, and uses them to move on to new tasks that, as a result, need less up-front context.

  Overall, Opus 4.7 shows a similar safety profile to Opus 4.6: our evaluations show low rates of concerning behavior such as deception, sycophancy, and cooperation with misuse. On some measures, such as honesty and resistance to malicious “prompt injection” attacks, Opus 4.7 is an improvement on Opus 4.6; in others (such as its tendency to give overly detailed harm-reduction advice on controlled substances), Opus 4.7 is modestly weaker. Our alignment assessment concluded that the model is “largely well-aligned and trustworthy, though not fully ideal in its behavior”. Note that Mythos Preview remains the best-aligned model we’ve trained according to our evaluations. Our safety evaluations are discussed in full in the Claude Opus 4.7 System Card.

  In addition to Claude Opus 4.7 itself, we’re launching the following updates:

  More effort control:

  Opus 4.7 introduces a new xhigh (“extra high”) effort level between high and max, giving users finer control over the tradeoff between reasoning and latency on hard problems. In Claude Code, we’ve raised the default effort level to xhigh for all plans. When testing Opus 4.7 for coding and agentic use cases, we recommend starting with high or xhigh effort.

  On the Claude Platform (API):

  as well as support for higher-resolution images, we’re also launching task budgets in public beta, giving developers a way to guide Claude’s token spend so it can prioritize work across longer runs.

  In Claude Code:

  The new /ultrareview slash command produces a dedicated review session that reads through changes and flags bugs and design issues that a careful reviewer would catch. We’re giving Pro and Max Claude Code users three free ultrareviews to try it out. In addition, we’ve extended auto mode to Max users. Auto mode is a new permissions option where Claude makes decisions on your behalf, meaning that you can run longer tasks with fewer interruptions—and with less risk than if you had chosen to skip all permissions.

  Opus 4.7 is a direct upgrade to Opus 4.6, but two changes are worth planning for because they affect token usage. First, Opus 4.7 uses an updated tokenizer that improves how the model processes text. The tradeoff is that the same input can map to more tokens—roughly 1.0–1.35× depending on the content type. Second, Opus 4.7 thinks more at higher effort levels, particularly on later turns in agentic settings. This improves its reliability on hard problems, but it does mean it produces more output tokens.

  Users can control token usage in various ways: by using the effort parameter, adjusting their task budgets, or prompting the model to be more concise. In our own testing, the net effect is favorable—token usage across all effort levels is improved on an internal coding evaluation, as shown below—but we recommend measuring the difference on real traffic. We’ve written a migration guide that provides further advice on upgrading from Opus 4.6 to Opus 4.7.

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• Apr 16, 2026

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    Apr 16, 2026
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    Apr 19, 2026
  

  Claude Developer Platform by Anthropic

  April 16, 2026

  Claude Developer Platform releases Claude Opus 4.7, its most capable generally available model for complex reasoning and agentic coding, at the same pricing as Opus 4.6. It also expands Claude in Amazon Bedrock to all customers, with Opus 4.7 and Haiku 4.5 available in 27 AWS regions.

  • We've launched Claude Opus 4.7, our most capable generally available model for complex reasoning and agentic coding, at the same $5 / $25 per MTok pricing as Opus 4.6. See What's new in Claude Opus 4.7 for capability improvements, new features, and the updated tokenizer. Opus 4.7 includes API breaking changes versus Opus 4.6; see Migrating to Claude Opus 4.7 before upgrading.

  • Claude in Amazon Bedrock is now open to all Amazon Bedrock customers. Claude Opus 4.7 and Claude Haiku 4.5 are available self-serve from the Bedrock console through the Messages API endpoint at /anthropic/v1/messages, in 27 AWS regions with global and regional endpoints.

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• April 2026

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  Claude Code by Anthropic

  2.1.109

  Claude Code improves the extended-thinking indicator with a rotating progress hint.

  • Improved the extended-thinking indicator with a rotating progress hint

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• April 2026

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    Apr 14, 2026
  

  Claude Code by Anthropic

  2.1.108

  Claude Code adds 1-hour and forced 5-minute prompt caching controls, a session recap feature, and Skill tool access to built-in slash commands. It also improves resume, model switching, errors, and memory use while fixing a wide range of login, session, transcript, and plugin bugs.

  Changes

  • Added ENABLE_PROMPT_CACHING_1H env var to opt into 1-hour prompt cache TTL on API key, Bedrock, Vertex, and Foundry (ENABLE_PROMPT_CACHING_1H_BEDROCK is deprecated but still honored), and FORCE_PROMPT_CACHING_5M to force 5-minute TTL
  • Added recap feature to provide context when returning to a session, configurable in /config and manually invocable with /recap; force with CLAUDE_CODE_ENABLE_AWAY_SUMMARY if telemetry disabled.
  • The model can now discover and invoke built-in slash commands like /init, /review, and /security-review via the Skill tool
  • /undo is now an alias for /rewind
  • Improved /model to warn before switching models mid-conversation, since the next response re-reads the full history uncached
  • Improved /resume picker to default to sessions from the current directory; press Ctrl+A to show all projects
  • Improved error messages: server rate limits are now distinguished from plan usage limits; 5xx/529 errors show a link to status.claude.com; unknown slash commands suggest the closest match
  • Reduced memory footprint for file reads, edits, and syntax highlighting by loading language grammars on demand
  • Added "verbose" indicator when viewing the detailed transcript (Ctrl+O)
  • Added a warning at startup when prompt caching is disabled via DISABLE_PROMPT_CACHING* environment variables
  • Fixed paste not working in the /login code prompt (regression in 2.1.105)
  • Fixed subscribers who set DISABLE_TELEMETRY falling back to 5-minute prompt cache TTL instead of 1 hour
  • Fixed Agent tool prompting for permission in auto mode when the safety classifier's transcript exceeded its context window
  • Fixed Bash tool producing no output when CLAUDE_ENV_FILE (e.g. ~/.zprofile) ends with a # comment line
  • Fixed claude --resume <session-id> losing the session's custom name and color set via /rename
  • Fixed session titles showing placeholder example text when the first message is a short greeting
  • Fixed terminal escape codes appearing as garbage text in the prompt input after --teleport
  • Fixed /feedback retry: pressing Enter to resubmit after a failure now works without first editing the description
  • Fixed --teleport and --resume <id> precondition errors (e.g. dirty git tree, session not found) exiting silently instead of showing the error message
  • Fixed Remote Control session titles set in the web UI being overwritten by auto-generated titles after the third message
  • Fixed --resume truncating sessions when the transcript contained a self-referencing message
  • Fixed transcript write failures (e.g., disk full) being silently dropped instead of being logged
  • Fixed diacritical marks (accents, umlauts, cedillas) being dropped from responses when the language setting is configured
  • Fixed policy-managed plugins never auto-updating when running from a different project than where they were first installed

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