ChatGPT Release Notes

GPT-5.4 Thinking in ChatGPT

GPT-5.4 brings together the best of our recent advances in reasoning, coding, and agentic workflows into a single frontier model. It incorporates the industry-leading coding capabilities of GPT-5.3-Codex while improving how the model works across tools, software environments, and professional tasks involving spreadsheets, presentations, and documents. The result is a model that gets complex real work done accurately, effectively, and efficiently—delivering what you asked for with less back and forth.

In ChatGPT, GPT-5.4 Thinking can now provide an upfront plan of its thinking, so you can adjust course mid-response while it's working, and arrive at a final output that's more closely aligned with what you need without additional turns. GPT-5.4 Thinking also improves deep web research, particularly for highly specific queries, while better maintaining context for questions that require longer thinking. Together, these improvements mean higher-quality answers that arrive faster and stay relevant to the task at hand.

GPT‑5.3 Instant

GPT‑5.3 Instant delivers more accurate answers, richer and better-contextualized results when searching the web, and reduces unnecessary dead ends, caveats, and overly declarative phrasing that can interrupt the flow of conversation.

This update focuses on the parts of the ChatGPT experience people feel every day: tone, relevance, and conversational flow. These are nuanced problems that don’t always show up in benchmarks, but shape whether ChatGPT feels helpful or frustrating. GPT‑5.3 Instant directly reflects user feedback in these areas.

Add sources to your projects from anywhere

Projects now make it easy to build a living knowledge base by adding sources wherever your context already lives; from apps, conversations, or quick text inputs.

• Sources from apps:
  Paste a link to a Slack channel or Google Drive file or folder to add it directly as a project source.
  Additionally, use connected apps directly in chats.

• Sources from chats:
  Save useful ChatGPT responses into your project so great outputs become reusable knowledge.

• Ad-hoc text sources:
  Paste notes, briefs, or reference material directly to capture context instantly.

Learn more about projects in ChatGPT.

Retiring GPT-4o and other legacy models

As previously announced, we have retired GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini from ChatGPT. We are also retiring GPT-5 (Instant and Thinking), as previously announced. There are no API changes at this time. For details, see our blog post and Help Center.

ChatGPT updates: Better file uploads, easier copying, and more reliable long chats

Web

• Attach up to 20 files in a single message. You can now upload up to 20 files at once (previously 10), making it easier to analyze document sets, compare multiple files, or provide broader context in a single message.
• Expanded file type support. We now support additional text and code file formats, improving compatibility with source files, logs, configuration files, and other structured text.
• Cleaner “Select All” behavior (Cmd+A). Cmd+A now selects only the conversation content, excluding surrounding interface elements for cleaner copying and sharing of chat transcripts.

Android

• Quick tools in the composer. A new quick-tools menu in the message composer makes common actions easier to access.
• Simplified composer. The message composer has been streamlined to reduce visual complexity and make it easier to focus on your message.

iOS

• Performance improvements. We’ve made multiple performance enhancements to improve responsiveness and overall speed throughout the app.

Web, iOS, and Android

• Improved reliability for long “Thinking” chats. We've reduced interruption rates in longer “Thinking” chats through infrastructure improvements.

Updates to deep research

We’re introducing improvements to deep research in ChatGPT to help produce more accurate, credible reports with greater control. You can now focus research on specific websites and a larger collection of connected apps as trusted sources.

A redesigned sidebar entry point and fullscreen report view make it easier to start, review, and manage research in one place. Create and edit a research plan before it begins, and track progress with the ability to adjust direction mid-run.

Rolling out throughout today to Plus and Pro users, with Free and Go users following in the coming days.

For more information, please refer to our help center article:
Deep research in ChatGPT

GPT-5.2 Instant Update

We’re making an update to GPT-5.2 Instant in ChatGPT and the API that improves response style and quality.

Users should notice responses that are more measured and grounded in tone, in a way that’s more contextually appropriate to the conversation. The model also tends to output clearer, more relevant answers to advice-seeking and how-to questions, more reliably placing the most important info upfront.