LangChain Release Notes

Name: LangChain
Brand: LangChain

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267 release notes curated from 2 sources by the Releasebot Team. Last updated: Oct 7, 2026

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Oct 7, 2026
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Oct 7, 2026

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Oct 7, 2026
LangChain

langchain-huggingface==1.2.3

LangChain releases Hugging Face partner updates with safer streaming tests, token repr masking, device-agnostic accelerator-based device count detection, and removal of the retired IPEX backend, alongside refreshed model profiles and dependency upgrades.

Changes since langchain-huggingface==1.2.2

fix(huggingface): use a supported Scaleway model in streaming test (#41095)

chore(deps): bump langgraph-sdk from 0.4.4 to 0.4.6 in /libs/partners/huggingface (#41098)

chore(deps): bump langgraph-sdk from 0.4.2 to 0.4.4 in /libs/partners/huggingface (#41076)

chore(deps): bump fsspec from 2026.6.0 to 2026.9.0 in /libs/partners/huggingface (#41092)

chore(deps): bump fsspec from 2025.9.0 to 2026.6.0 in /libs/partners/huggingface (#41077)

chore(huggingface): update lockfile (#41088)

release(huggingface): 1.2.3 (#41058)

fix(huggingface): hide huggingfacehub_api_token from repr (#41047)

chore(deps): bump sentence-transformers from 5.2.3 to 5.6.0 in /libs/partners/huggingface (#40959)

chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/partners/huggingface (#40957)

chore(deps): bump tornado from 6.5.8 to 6.5.9 in /libs/partners/huggingface (#40958)

chore(model-profiles): refresh model profile data (#40747)

chore(model-profiles): refresh model profile data (#40665)

chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/partners/huggingface (#40637)

chore(model-profiles): refresh model profile data (#40399)

feat(huggingface): use torch.accelerator for device-agnostic device count detection (#39640)

fix(huggingface): remove retired IPEX backend (#39649)

chore(model-profiles): refresh model profile data (#40198)

chore(model-profiles): refresh model profile data (#40171)

chore(model-profiles): refresh model profile data (#40009)

chore(huggingface): bump transformers from 5.5.0 to 5.10.1 (#40117)

chore(deps): bump tornado from 6.5.7 to 6.5.8 in /libs/partners/huggingface (#40110)

chore(deps): bump orjson from 3.11.6 to 3.12.0 in /libs/partners/huggingface (#40115)

chore(deps): bump requests from 2.33.0 to 2.34.2 in /libs/partners/huggingface (#40116)

chore(deps): bump filelock from 3.20.3 to 3.32.5 in /libs/partners/huggingface (#40118)

chore(deps): bump langsmith from 0.10.16 to 0.12.1 in /libs/partners/huggingface (#40119)

chore(deps): bump idna from 3.15 to 3.19 in /libs/partners/huggingface (#40121)

chore(model-profiles): refresh model profile data (#39954)

chore(model-profiles): refresh model profile data (#39928)

chore(model-profiles): refresh model profile data (#39844)

chore(model-profiles): refresh model profile data (#39789)

chore(model-profiles): refresh model profile data (#39710)

chore(model-profiles): refresh model profile data (#39692)

chore(model-profiles): refresh model profile data (#39670)

chore(model-profiles): refresh model profile data (#39646)

chore(partners): bump langgraph floor in openai and huggingface lockfiles (#39617)

chore: bump setuptools in Hugging Face lockfile (#39603)

chore(model-profiles): refresh model profile data (#39299)

chore: bump langsmith from 0.10.6 to 0.10.16 in /libs/partners/huggingface (#39281)

chore(model-profiles): refresh model profile data (#39239)

chore: bump aiohttp from 3.14.1 to 3.14.3 in /libs/partners/huggingface (#39237)

chore(model-profiles): refresh model profile data (#39166)

chore(model-profiles): refresh model profile data (#39105)

chore(model-profiles): refresh model profile data (#39036)

chore: bump langsmith from 0.10.2 to 0.10.6 in /libs/partners/huggingface (#38912)

chore: bump torch from 2.12.1 to 2.13.0 in /libs/partners/huggingface (#38911)

chore: bump langsmith from 0.9.5 to 0.10.2 in /libs/partners/huggingface (#38829)

chore: bump transformers from 5.3.0 to 5.5.0 in /libs/partners/huggingface (#38828)

chore(model-profiles): refresh model profile data (#38821)

chore(deps): refresh lockfiles (#38746)

chore(model-profiles): refresh model profile data (#38699)

chore(model-profiles): refresh model profile data (#38663)

chore: bump langsmith from 0.8.18 to 0.9.5 in /libs/partners/huggingface (#38592)

chore: bump pytest from 9.1.0 to 9.1.1 in /libs/partners/huggingface (#38591)

chore: bump transformers from 5.2.0 to 5.3.0 in /libs/partners/huggingface (#38593)

chore: bump langgraph-checkpoint from 4.1.0 to 4.1.1 in /libs/partners/huggingface (#38478)

chore: bump vcrpy from 8.1.1 to 8.2.1 in /libs/partners/huggingface (#38306)

chore: bump langsmith from 0.8.16 to 0.8.18 in /libs/partners/huggingface (#38308)

chore: bump langsmith from 0.8.14 to 0.8.16 in /libs/partners/huggingface (#38242)

chore: bump torch from 2.9.0 to 2.12.1 in /libs/partners/huggingface (#38240)

chore: bump pytest from 9.0.3 to 9.1.0 in /libs/partners/huggingface (#38241)

chore: bump tornado from 6.5.6 to 6.5.7 in /libs/partners/huggingface (#38177)

chore: bump aiohttp from 3.14.0 to 3.14.1 in /libs/partners/huggingface (#38178)

docs: refresh README installation and resources (#38119)

test(core,langchain): update tests for explicit deserialization allowlists (#38118)

chore: bump tornado from 6.5.5 to 6.5.6 in /libs/partners/huggingface (#38113)

release(core): 1.4.7 (#38111)

fix(core,partners): rename package version trace metadata (#38110)

chore: bump langsmith from 0.8.9 to 0.8.14 in /libs/partners/huggingface (#38091)

release(core): 1.4.6 (#38061)

feat(core,partners): add package version tracking to tracing metadata (#35295)

chore(infra): bump mypy to 2.1 and unify type-check config across the monorepo (#36470)

feat(standard-tests): validate tool call chunks during streaming (#34707)

chore(partners): bump locks (#38052)

hotfix(openai): min core dep (#37990)

test(langchain,partners): disable pytest-benchmark under xdist to silence PytestBenchmarkWarning (#37901)

chore: bump dependencies (#37892)

chore: bump aiohttp from 3.13.4 to 3.14.0 in /libs/partners/huggingface (#37885)

chore(infra): bump langchain-tests floor to 1.1.9 (#37610)

chore: bump idna from 3.10 to 3.15 in /libs/partners/huggingface (#37528)

ci(infra): harden Dependabot version-bound preservation (#37510)

chore: bump urllib3 from 2.6.3 to 2.7.0 in /libs/partners/huggingface (#37335)

chore: bump langchain-core from 1.3.2 to 1.3.3 in /libs/partners/huggingface (#37273)

chore: bump setuptools from 80.9.0 to 82.0.1 in /libs/partners/huggingface (#37274)

chore(docs): update x handle references (#37081)

chore(model-profiles): refresh model profile data (#37051)

hotfix: bump min core versions (#36996)

feat(core): add content-block-centric streaming (v2) (#36834)

ci(infra): add pytest-xdist to partner test groups (#36988)

hotfix(ci): remove nobenchmark flag (#36959)

chore(partners): standardize integration test invocation (#36958)

chore: bump python-dotenv from 1.1.1 to 1.2.2 in /libs/partners/huggingface (#36928)

chore(model-profiles): refresh model profile data (#36911)
Original source
Oct 7, 2026
Date parsed from source:
Oct 7, 2026

First seen by Releasebot:
Oct 7, 2026
LangChain

langchain-fireworks==1.7.1

LangChain releases Fireworks 1.7.1 with streaming and tool loop reasoning fixes and refreshed model profile data.

Changes since langchain-fireworks==1.7.0

release(fireworks): 1.7.1 (#41137)

fix(fireworks): preserve reasoning in streaming and tool loops (#41093)

chore(deps): bump langgraph-sdk from 0.4.4 to 0.4.6 in /libs/partners/fireworks (#41100)

chore(deps): bump langgraph-sdk from 0.4.2 to 0.4.4 in /libs/partners/fireworks (#41078)

chore(model-profiles): refresh model profile data (#40974)
Original source
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Oct 7, 2026
Date parsed from source:
Oct 7, 2026

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Oct 7, 2026
LangGraph by LangChain

langgraph-cli==0.4.33

LangGraph releases CLI 0.4.33 with new deploy options, including --image-uri for already-pushed images and a new langgraph deploy listeners list command, plus fixes for credential-bearing Git dependencies and dependency updates.

Changes since cli==0.4.32

release(cli): 0.4.33 (#9227)

feat(cli): add --image-uri to deploy an already-pushed image (#9222)

feat(cli): add 'langgraph deploy listeners list' (#9221)

chore(deps): bump virtualenv from 21.7.12 to 21.7.13 in /libs/cli (#9167)

chore(deps): bump virtualenv from 21.2.4 to 21.7.12 in /libs/cli (#9159)

chore(deps): bump the minor-and-patch group in /libs/cli/js-monorepo-example with 8 updates (#9151)

chore(deps): bump the minor-and-patch group in /libs/cli with 5 updates (#9153)

chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/cli (#9137)

chore(deps): bump the uv group across 2 directories with 1 update (#9136)

chore(deps): bump pyjwt from 2.13.0 to 2.15.0 in /libs/cli (#9129)

fix: reject credential-bearing Git dependencies (#8542)
Original source
Oct 6, 2026
Date parsed from source:
Oct 6, 2026

First seen by Releasebot:
Oct 6, 2026
LangChain

langchain-core==1.6.7

LangChain releases core 1.6.7 with Bedrock Converse redacted content fixes and Python 3.14 hardening.

Changes since langchain-core==1.6.6

release(core): 1.6.7 (#41087)

fix(core): include openai redacted_content in v1 output for bedrock converse (#41086)

fix(core): python 3.14 hardening around inspect.signature (#41059)

chore(deps): bump notebook from 7.5.7 to 7.6.3 in /libs/core (#41057)

chore(deps): bump notebook from 7.5.6 to 7.5.7 in /libs/core (#40992)

chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/core (#40972)

chore(deps): bump tornado from 6.5.8 to 6.5.9 in /libs/core (#40970)
Original source
Oct 6, 2026
Date parsed from source:
Oct 6, 2026

First seen by Releasebot:
Oct 6, 2026
LangGraph by LangChain

langgraph==1.2.14

LangGraph releases 1.2.14 with changes since the 1.2.13 release.

Changes since 1.2.13

release(langgraph): 1.2.14 (#9215)
Original source
Similar to LangChain with recent updates:
Oct 6, 2026
Date parsed from source:
Oct 6, 2026

First seen by Releasebot:
Oct 6, 2026
LangGraph by LangChain

langgraph-sdk==0.4.6

LangGraph releases SDK 0.4.6 and LangGraph 1.2.13 with a fix for percent-encoding thread and assistant IDs in stream requests.

Changes since sdk==0.4.5

release(sdk-py): 0.4.6 (#9214)

fix(sdk-py): percent-encode thread_id and assistant_id in thread stream requests (#9213)

release(langgraph): 1.2.13 (#9205)

chore(deps): bump the minor-and-patch group in /libs/sdk-py with 5 updates (#9149)

chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/sdk-py (#9134)
Original source
Oct 5, 2026
Date parsed from source:
Oct 5, 2026

First seen by Releasebot:
Oct 5, 2026
LangGraph by LangChain

langgraph==1.2.13

LangGraph releases 1.2.13 with checkpointing and DeltaChannel fixes, improving replay behavior, branch handling, subgraph hydration, and state reporting for more reliable thread updates.
Changes since 1.2.12

fix(langgraph): fork before replaying an update checkpoint the thread moved past (#9170)

fix(langgraph): keep an update_state on an older checkpoint out of its other branches (#9165)

fix(langgraph): keep DeltaChannel counters on every update_state path (#9142)

release(langgraph): 1.2.13 (#9205)

fix(langgraph): don't walk history for a DeltaChannel that was never written (#9141)

fix(langgraph): don't replay an abandoned branch into a DeltaChannel fork (#8548)

chore(deps): bump notebook from 7.5.6 to 7.5.7 in /libs/langgraph (#9168)

fix(langgraph): hydrate subgraph delta channels with the caller-resolved saver (#8538)

fix(langgraph): stop reporting answered interrupts in get_state (#9103)

chore(deps-dev): bump the minor-and-patch group across 1 directory with 5 updates (#9155)

chore(deps-dev): bump the minor-and-patch group in /libs/checkpoint-conformance with 2 updates (#9145)

chore(deps): bump the minor-and-patch group in /libs/sdk-py with 5 updates (#9149)

chore(deps): bump tornado from 6.5.8 to 6.5.9 in /libs/langgraph (#9160)

chore(deps-dev): bump types-requests from 2.33.0.20260712 to 2.33.0.20260906 in /libs/langgraph (#9156)

chore(deps): bump pyjwt from 2.15.0 to 2.15.1 in /libs/langgraph (#9140)

chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/langgraph (#9138)

chore(deps): bump pyjwt from 2.14.0 to 2.15.0 in /libs/langgraph (#9139)

chore(deps): bump pyjwt from 2.13.0 to 2.14.0 in /libs/langgraph (#9126)

Original source
Oct 2, 2026
Date parsed from source:
Oct 2, 2026

First seen by Releasebot:
Oct 2, 2026
LangChain

langchain-text-splitters==1.1.3

LangChain releases langchain-text-splitters 1.1.3 with dependency refreshes, RecursiveJsonSplitter TypeError handling, restored lazy imports for heavy optional dependencies, and separator fixes for Kotlin, Rust, Haskell, C# and Elixir.

Changes since langchain-text-splitters==1.1.2

release(text-splitters): 1.1.3 (#41001)

chore(deps): bump the minor-and-patch group across 3 directories with 4 updates (#40969)

chore(deps): bump tornado from 6.5.9 to 6.5.10 in /libs/text-splitters (#40971)

chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/text-splitters (#40938)

chore(deps): bump tornado from 6.5.8 to 6.5.9 in /libs/text-splitters (#40940)

chore(deps): bump anyio from 4.14.2 to 4.15.1 in /libs/text-splitters (#40645)

chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/text-splitters (#40624)

chore(deps): bump soupsieve from 2.8.4 to 2.9 in /libs/text-splitters (#40579)

chore(deps): bump the minor-and-patch group across 3 directories with 5 updates (#40566)

chore(deps): bump types-requests from 2.33.0.20260712 to 2.33.0.20260906 in /libs/text-splitters (#40568)

chore(deps): update lxml requirement from <7.0,>=6.1.2 to >=6.1.3,<7.0 in /libs/text-splitters (#40569)

chore(deps): bump mistune from 3.3.0 to 3.3.3 in /libs/text-splitters (#40148)

chore(deps): bump the minor-and-patch group across 3 directories with 5 updates (#40085)

chore(deps): update lxml requirement from <7.0,>=6.1.0 to >=6.1.2,<7.0 in /libs/text-splitters (#40087)

chore(deps): bump tornado from 6.5.7 to 6.5.8 in /libs/text-splitters (#40112)

chore: bump the minor-and-patch group across 3 directories with 8 updates (#39863)

chore: bump the major group across 2 directories with 2 updates (#39864)

chore: bump types-requests from 2.33.0.20260518 to 2.33.0.20260712 in /libs/text-splitters (#39867)

fix(text-splitters): raise TypeError for non-dict, non-convertible input to RecursiveJsonSplitter (#39238)

chore: bump the minor-and-patch group across 3 directories with 7 updates (#39187)

chore(infra): add missing LICENSE files to publishable packages (#39146)

chore: bump jupyterlab from 4.5.9 to 4.5.10 in /libs/text-splitters (#39028)

chore: bump setuptools from 80.9.0 to 83.0.0 in /libs/text-splitters (#39029)

chore: bump torch from 2.12.1 to 2.13.0 in /libs/text-splitters (#38946)

chore: bump soupsieve from 2.8 to 2.8.4 in /libs/text-splitters (#38748)

chore: bump nltk from 3.9.4 to 3.10.0 in /libs/text-splitters (#38747)

chore: bump mistune from 3.2.1 to 3.3.0 in /libs/text-splitters (#38826)

chore(deps): refresh lockfiles (#38746)

fix(text-splitters): restore lazy imports for heavy optional dependencies (#35469)

feat(text-splitters): replace mypy by ty for type checking (#38658)

chore: bump the minor-and-patch group across 3 directories with 11 updates (#38587)

chore: bump pytest from 9.1.0 to 9.1.1 in /libs/text-splitters (#38299)

chore: bump jupyterlab from 4.5.7 to 4.5.9 in /libs/text-splitters (#38296)

chore: bump langsmith from 0.8.5 to 0.8.18 in /libs/text-splitters (#38301)

chore: bump tornado from 6.5.6 to 6.5.7 in /libs/text-splitters (#38175)

chore: bump bleach from 6.2.0 to 6.4.0 in /libs/text-splitters (#38195)

chore: bump torch from 2.9.1 to 2.12.1 in /libs/text-splitters (#38231)

chore: bump pytest from 9.0.3 to 9.1.0 in /libs/text-splitters (#38232)

chore: bump jupyter-server from 2.18.0 to 2.20.0 in /libs/text-splitters (#38250)

docs: refresh README installation and resources (#38119)

chore: bump tornado from 6.5.5 to 6.5.6 in /libs/text-splitters (#38112)

release(core): 1.4.7 (#38111)

release(core): 1.4.6 (#38061)

chore(infra): bump mypy to 2.1 and unify type-check config across the monorepo (#36470)

fix(langchain): tighten structured output model fallbacks (#38042)

hotfix(core): bump lockfile(s) (#38032)

chore(core): fix some any generics (#34545)

hotfix(openai): min core dep (#37990)

chore: unify core versions in text-splitters. (#37523)

chore: bump idna from 3.10 to 3.15 in /libs/text-splitters (#37535)

chore: bump the minor-and-patch group across 3 directories with 15 updates (#37515)

ci(infra): harden Dependabot version-bound preservation (#37510)

chore: bump langsmith from 0.7.31 to 0.8.0 in /libs/text-splitters (#37380)

chore: bump urllib3 from 2.6.3 to 2.7.0 in /libs/text-splitters (#37326)

chore: bump mistune from 3.1.4 to 3.2.1 in /libs/text-splitters (#37235)

chore: bump jupyter-server from 2.17.0 to 2.18.0 in /libs/text-splitters (#37202)

refactor(langchain-classic): retarget deprecations to create_agent, other chores (#37164)

chore: update lxml requirement from <7.0,>=4.9.3 to >=6.1.0,<7.0 in /libs/text-splitters (#37126)

chore: bump notebook from 7.4.7 to 7.5.6 in /libs/text-splitters (#37105)

chore(docs): update x handle references (#37081)

fix(text-splitters): remove invalid and duplicate separators in Kotlin, Rust, and Haskell (#37039)

fix(text-splitters): remove incorrect C# and Elixir separator keywords (#37037)

hotfix: bump min core versions (#36996)

release(openai): 1.2.1 (#36995)

feat(core): add content-block-centric streaming (v2) (#36834)

fix(fireworks): honor max_retries (#36973)

chore: bump nbconvert from 7.17.0 to 7.17.1 in /libs/text-splitters (#36921)
Original source
Sep 30, 2026
Date parsed from source:
Sep 30, 2026

First seen by Releasebot:
Sep 30, 2026
LangChain

langchain-openai==1.6.7

LangChain adds Azure workload identity discovery and refreshes OpenAI model profile data.

Changes since langchain-openai==1.6.6

release(openai): 1.6.7 (#40933)

chore(model-profiles): refresh model profile data (#40924)

test(openai): drop retired completions live tests (#40910)

chore(model-profiles): refresh model profile data (#40869)

feat(openai): discover Azure workload identity (#40532)
Original source
Sep 29, 2026
Date parsed from source:
Sep 29, 2026

First seen by Releasebot:
Sep 29, 2026
LangChain

langchain-core==1.6.6

LangChain releases core 1.6.6 with Claude Sonnet 5.5 compatibility and docstring example fixes.

Changes since langchain-core==1.6.5

release(core): 1.6.6 (#40906)
fix(anthropic): support Claude Sonnet 5.5 compatibility (#40882)
docs(core): fix docstring examples that don't run as copied (#40815)
Original source
Sep 29, 2026
Date parsed from source:
Sep 29, 2026

First seen by Releasebot:
Sep 29, 2026
LangChain

langchain-anthropic==1.7.5

LangChain releases anthroptic 1.7.5 with Claude Sonnet 5.5 compatibility and tool call replay fixes.

Changes since langchain-anthropic==1.7.4

release(anthropic): 1.7.5 (#40912)

fix(anthropic): support Claude Sonnet 5.5 compatibility (#40882)

fix(anthropic): serialize invalid tool calls as tool use on replay (#40864)
Original source
Sep 28, 2026
Date parsed from source:
Sep 28, 2026

First seen by Releasebot:
Sep 29, 2026
LangChain

langchain-fireworks==1.7.0

LangChain adds prompt caching middleware and timeout fixes in a Fireworks integration release.
Changes since langchain-fireworks==1.6.3

hotfix(fireworks): replace unavailable integration test model (#40890)

release(fireworks): 1.7.0 (#40889)

feat(fireworks): add prompt caching middleware (#38823)

fix(fireworks): classify mid-stream read timeouts (#40874)

chore(model-profiles): refresh model profile data (#40833)

Original source
Sep 28, 2026
Date parsed from source:
Sep 28, 2026

First seen by Releasebot:
Sep 28, 2026
LangChain

langchain==1.4.3

LangChain ships 1.4.3 with Bedrock Mantle chat model support, agent tool call fixes, and cache and structured output improvements.

Changes since langchain==1.4.2

release(langchain): 1.4.3 (#40888)

fix(langchain): sanitize cache settings for fallback models (#40886)

feat(langchain): support Bedrock Mantle chat models in init_chat_model (#40837)

fix(langchain): recognize GPT-6 structured output without profiles (#40844)

docs(infra): fix AGENTS.md root setup guidance and package doc accuracy (#40794)

fix(langchain): repair invalid tool calls in create_agent (#40530)

chore(langchain): remove commented-out cohere extra (#40713)

chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/langchain_v1 (#40626)
Original source
Sep 25, 2026
Date parsed from source:
Sep 25, 2026

First seen by Releasebot:
Sep 25, 2026
LangChain

langchain-fireworks==1.6.3

LangChain ships Fireworks fixes for unsupported native PDF inputs, malformed tool argument handling, and refreshed model profiles.

Changes since langchain-fireworks==1.6.2

release(fireworks): 1.6.3 (#40834)

fix(fireworks): declare native PDF inputs unsupported (#40814)

fix(fireworks): preserve malformed tool arguments as diagnostic JSON (#40818)

chore(model-profiles): refresh model profile data (#40804)
Original source
Sep 24, 2026
Date parsed from source:
Sep 24, 2026

First seen by Releasebot:
Sep 24, 2026
LangChain

langchain-openai==1.6.6

LangChain fixes OpenAI streaming errors and ships langchain-openai 1.6.6.

Changes since langchain-openai==1.6.5

release(openai): 1.6.6 (#40800)

fix(openai): raise on error events in stream path (#40791)
Original source