LangChain releases
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LangChain releases dev-tools 2d ago
langchain-anthropic==1.5.5
Changes since langchain-anthropic==1.5.4 release(anthropic): 1.5.5 ( #39597 ) fix(anthropic): report reasoning tokens in usage metadata ( #39590 ) fix(anthropic): fix KeyError on rename in Claude file-tool middleware ( #39293 ) chore(model-profiles): refresh model profile data (…
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langchain==1.3.15
Changes since langchain==1.3.14 release(langchain): 1.3.15 ( #39595 ) feat(langchain): expose trace_policy on AgentMiddleware ( #38910 ) chore(langchain): fix type errors in tests ( #39589 ) chore: bump h2 from 4.3.0 to 4.4.1 in /libs/langchain_v1 ( #39324 ) fix(langchain):…
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langchain-core==1.5.4
Changes since langchain-core==1.5.3 release(core): 1.5.4 ( #39592 ) fix(core): compat with pydantic 2.14 ( #39328 ) fix(core): stop StructuredPrompt from mutating caller kwargs ( #39174 ) fix(core): preserve flat tool args schema for RootModel runnables ( #39307 ) fix(core):…
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langchain-openai==1.4.3
Changes since langchain-openai==1.4.2 release(openai): 1.4.3 ( #39485 ) fix(openai): filter invalid tool calls from content ( #39366 ) chore(openai): update guidance for responses API for OpenAI-compatible providers ( #39327 ) chore(openai): update docstring for…
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langchain-openai==1.4.2
Changes since langchain-openai==1.4.1 release(openai): 1.4.2 ( #39322 ) fix(openai): handle ContextWindowExceededError ( #39300 ) chore: bump the minor-and-patch group across 3 directories with 7 updates ( #39187 ) fix(openai): filter langchain-generated content block IDs (…
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langchain-anthropic==1.5.4
Changes since langchain-anthropic==1.5.3 release(anthropic): 1.5.4 ( #39277 ) fix(anthropic): handle tool schemas with unsupported top-level composition ( #39273 ) chore: bump the minor-and-patch group across 3 directories with 7 updates ( #39187 ) fix(anthropic): preserve…
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langchain-core==1.5.3
Changes since langchain-core==1.5.2 release(core): 1.5.3 ( #39145 ) fix(core): fall back to LANGSMITH_API_KEY for gateway ( #39115 )
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langchain-anthropic==1.5.3
Changes since langchain-anthropic==1.5.2 release(anthropic): 1.5.3 ( #39109 ) fix(anthropic): preserve empty thinking field in signature_delta streaming ( #38765 ) fix(anthropic): strip unsupported fields from system message content blocks ( #39101 )
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langchain-core==1.5.2
Changes since langchain-core==1.5.1 release(core): 1.5.2 ( #39108 ) fix(core): handle empty string in gateway env vars ( #39107 ) chore: bump setuptools from 82.0.0 to 83.0.0 in /libs/core ( #39032 ) chore: bump jupyterlab from 4.5.9 to 4.5.10 in /libs/core ( #39033 ) chore:…
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langchain-fireworks==1.5.2
Changes since langchain-fireworks==1.5.1 release(fireworks): 1.5.2 ( #39093 ) chore(model-profiles): refresh model profile data ( #39092 ) chore(model-profiles): refresh model profile data ( #39084 ) chore(model-profiles): refresh model profile data ( #39050 )
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langchain-anthropic==1.5.2
Changes since langchain-anthropic==1.5.1 release(anthropic): 1.5.2 ( #39056 ) feat(anthropic): add Claude Opus 5 support ( #39054 )
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langchain-anthropic==1.5.1
Changes since langchain-anthropic==1.5.0 release(anthropic): 1.5.1 ( #39043 ) feat(anthropic,fireworks,openai): support langsmith gateway through env var ( #38742 ) fix(anthropic): enable structured output for Claude Opus 4.8 ( #39021 )
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langchain-core==1.5.1
Changes since langchain-core==1.5.0 release(core): 1.5.1 ( #39042 ) feat(anthropic,fireworks,openai): support langsmith gateway through env var ( #38742 ) fix(core): use tool_call_schema cache for BaseTool token counting in count_tokens_approximately ( #39020 )
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langchain-openrouter==0.2.7
Changes since langchain-openrouter==0.2.6 release(openrouter): 0.2.7 ( #39022 ) chore(model-profiles): refresh model profile data ( #39010 ) chore(model-profiles): refresh model profile data ( #38990 ) chore(model-profiles): refresh model profile data ( #38927 )…
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langchain-anthropic==1.5.0
Changes since langchain-anthropic==1.4.8 release(anthropic): 1.5.0 ( #38985 ) feat(core): add reasoning_effort as a standard chat model parameter ( #38887 ) fix(anthropic): add advisor_ prefix to builtin tool recognition ( #38686 ) chore(deps): refresh lockfiles ( #38746 )…
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langchain-fireworks==1.5.0
Changes since langchain-fireworks==1.4.4 release(fireworks): 1.5.0 ( #38986 ) feat(core): add reasoning_effort as a standard chat model parameter ( #38887 ) chore: bump langsmith from 0.10.2 to 0.10.6 in /libs/partners/fireworks ( #38914 ) fix: patch Dependabot dependency…
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langchain-xai==1.3.0
Changes since langchain-xai==1.2.2 release(xai): 1.3.0 ( #38984 ) feat(core): add reasoning_effort as a standard chat model parameter ( #38887 ) fix: patch Dependabot dependency vulnerabilities ( #38853 ) chore: bump langsmith from 0.9.5 to 0.10.2 in /libs/partners/xai ( #38832…
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langchain-openai==1.4.0
Changes since langchain-openai==1.3.5 release(openai): 1.4.0 ( #38983 ) chore: bump pillow from 12.2.0 to 12.3.0 in /libs/partners/openai ( #38999 ) feat(core): add reasoning_effort as a standard chat model parameter ( #38887 ) chore(model-profiles): refresh model profile data (…
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langchain-core==1.5.0
Changes since langchain-core==1.4.9 release(core): 1.5.0 ( #38978 ) feat(core): add reasoning_effort as a standard chat model parameter ( #38887 ) chore: bump soupsieve from 2.8 to 2.8.4 in /libs/core ( #38750 ) chore: bump mistune from 3.2.1 to 3.3.0 in /libs/core ( #38783 )
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langchain==1.3.13
Changes since langchain==1.3.12 release(langchain): 1.3.13 ( #38787 ) feat(langchain): add meta extra and support langchain-meta in init_chat_model ( #38786 ) feat(openai): support explicit prompt caching ( #38762 ) chore(deps): refresh lockfiles ( #38746 )
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langchain-fireworks==1.4.4
Changes since langchain-fireworks==1.4.3 release(fireworks): 1.4.4 ( #38753 ) fix(fireworks): report cached prompt token usage ( #38751 ) chore(deps): refresh lockfiles ( #38746 ) chore(model-profiles): refresh model profile data ( #38663 ) chore: bump pytest from 9.1.0 to 9.1.1…
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langchain-openai==1.3.4
Changes since langchain-openai==1.3.3 release(openai): 1.3.4 ( #38731 ) fix(openai): suppress Pydantic serializer warning on structured output parsed field ( #37727 ) test(openai): skip Codex VCR tests before cassette setup ( #38690 ) chore: bump the minor-and-patch group across…
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langchain==1.3.12
Changes since langchain==1.3.11 release(langchain): 1.3.12 ( #38730 ) fix(langchain): propagate interrupts through ToolRetryMiddleware ( #38722 ) fix(langchain): avoid shared process-group kill in shell middleware ( #36359 ) fix(langchain): sanitize anthropic cache markers on…
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langchain-core==1.4.9
Changes since langchain-core==1.4.8 release(core): 1.4.9 ( #38728 ) fix(core): improve langsmith loader error messages ( #35648 ) fix(core): output parser bugs in xml.py and pydantic.py ( #35641 ) style(core): fix some ruff preview rules ( #38656 ) fix(core): avoid dict…
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langchain-mistralai==1.1.6
Changes since langchain-mistralai==1.1.5 release(mistralai): 1.1.6 ( #38684 ) feat(mistralai): surface citation metadata from chat responses ( #37008 ) chore(model-profiles): refresh model profile data ( #38663 ) chore: bump vcrpy from 8.1.1 to 8.2.1 in /libs/partners/mistralai…
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langchain-anthropic==1.4.8
Changes since langchain-anthropic==1.4.7 release(anthropic): 1.4.8 ( #38490 ) fix(anthropic): keep initial text on content_block_start ( #38442 ) chore: bump langgraph-checkpoint from 4.1.0 to 4.1.1 in /libs/partners/anthropic ( #38479 ) fix(core): add messages to bare raise…
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langchain-fireworks==1.4.3
Changes since langchain-fireworks==1.4.2 release(fireworks): 1.4.3 chore: bump vcrpy from 8.1.1 to 8.2.1 in /libs/partners/fireworks ( #38314 ) chore: bump langsmith from 0.8.16 to 0.8.18 in /libs/partners/fireworks ( #38313 ) chore: bump langsmith from 0.8.14 to 0.8.16 in…
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langchain-openrouter==0.2.4
Changes since langchain-openrouter==0.2.3 release(openrouter): 0.2.4 ( #38381 ) chore(openrouter): bump openrouter floor to 0.9.2, drop file workaround ( #38216 ) test(openrouter): cover cache_control passthrough on tool defs ( #38215 ) feat(openrouter): surface…
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langchain==1.3.11
Changes since langchain==1.3.10 release(langchain): 1.3.11 ( #38377 ) fix(langchain,openai): only set strict=True on tools for OpenAI-compatible models in ProviderStrategy ( #38370 ) chore: bump pydantic-settings from 2.12.0 to 2.14.2 in /libs/langchain_v1 ( #38279 ) chore: bump…
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langchain-anthropic==1.4.7
Changes since langchain-anthropic==1.4.6 hotfix(anthropic): regenerate cassette ( #38376 ) release(anthropic): 1.4.7 ( #38373 ) chore: bump vcrpy from 8.1.1 to 8.2.1 in /libs/partners/anthropic ( #38324 ) chore: bump langsmith from 0.8.5 to 0.8.18 in /libs/partners/anthropic (…
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langchain-openai==1.3.3
Changes since langchain-openai==1.3.2 release(openai): 1.3.3 ( #38375 ) fix(openai): drop response item ids when store is false ( #38372 ) fix(langchain,openai): only set strict=True on tools for OpenAI-compatible models in ProviderStrategy ( #38370 ) test(openai): clarify…
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langchain==1.3.10
Changes since langchain==1.3.9 release(langchain): 1.3.10 ( #38255 ) chore: bump cryptography from 46.0.7 to 48.0.1 in /libs/langchain_v1 ( #38176 ) chore: bump aiohttp from 3.14.0 to 3.14.1 in /libs/langchain_v1 ( #38179 ) fix(langchain): switch summary format ( #38171 )…
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langchain-core==1.4.8
Changes since langchain-core==1.4.7 chore: bump jupyter-server from 2.18.0 to 2.20.0 in /libs/core ( #38252 ) chore: bump tornado from 6.5.6 to 6.5.7 in /libs/core ( #38184 ) chore: bump bleach from 6.3.0 to 6.4.0 in /libs/core ( #38198 ) release(core): 1.4.8 ( #38254 )…
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langchain-openai==1.3.2
Changes since langchain-openai==1.3.1 release(openai): 1.3.2 ( #38130 )
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langchain-openai==1.3.1
Changes since langchain-openai==1.3.0 docs: refresh README installation and resources ( #38119 ) test(core,langchain): update tests for explicit deserialization allowlists ( #38118 ) release(core): 1.4.7 ( #38111 ) fix(core,partners): rename package version trace metadata (…
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langchain-core==1.4.7
Changes since langchain-core==1.4.6 chore: bump tornado from 6.5.5 to 6.5.6 in /libs/core ( #38115 ) release(core): 1.4.7 ( #38111 ) fix(core,partners): rename package version trace metadata ( #38110 ) fix(core): fix Pydantic v1 support in tools/runnable ( #33698 )…
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langchain-anthropic==1.4.6
Changes since langchain-anthropic==1.4.5 release(anthropic): 1.4.6 ( #38105 ) fix(langchain,anthropic): confine file-search results and tighten anthropic allowed_prefixes ( #38106 ) release(core): 1.4.6 ( #38061 ) feat(core,partners): add package version tracking to tracing…
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langchain==1.3.8
Changes since langchain==1.3.7 release(langchain): 1.3.8 ( #38096 ) style(core,langchain,langchain-classic,partners): replace double backticks in docstrings ( #38095 ) release(core): 1.4.6 ( #38061 ) chore(langchain): add overloads to create_agent ( #34309 ) chore(infra): bump…
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langchain-core==1.4.6
Changes since langchain-core==1.4.5 release(core): 1.4.6 ( #38061 ) feat(core,partners): add package version tracking to tracing metadata ( #35295 ) fix(core,openai): normalize v1 streamed tool calls ( #35983 ) chore(infra): bump mypy to 2.1 and unify type-check config across…
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langchain-model-profiles==0.0.6
Changes since langchain-model-profiles==0.0.5 release(model-profiles): 0.0.6 ( #38057 ) feat(standard-tests): validate tool call chunks during streaming ( #34707 ) hotfix(core): bump lockfile(s) ( #38032 ) release(langchain): 1.3.7 ( #38024 ) release(langchain): 1.3.6 ( #38001 )…
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langchain-core==1.4.5
Changes since langchain-core==1.4.4 release(core): 1.4.5 ( #38056 ) feat(standard-tests): validate tool call chunks during streaming ( #34707 ) fix(core): async tracer on_chat_model_start fallback in sync context ( #35233 ) fix(langchain): tighten structured output model…
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