Core LangChain.js abstractions and schemas
Last release 8 days ago
20 Aug 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 59 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
3 years old
350 releases · first in 2023
Release timeline
350 releases since 2023Releases
- 0.2.921 Jun 2024
Release notes
Open source →Patch Changes
- Updated dependencies [
5c9fdf2,fe8eec1,5c9fdf2]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.820 Jun 2024
Release notes
Open source →Patch Changes
- Updated dependencies [
3b0e4c4]:- @langchain/[email protected]
Additional notes
Open source →Patch Changes
-
#11342
3b0e4c4Thanks @thushanth-bengre-langchain! - fix(fireworks): stop retrying deterministic embeddings failuresFireworksEmbeddingsthrew errors with the HTTP status buried in the message text, so nothing downstream could act on it and a bad API key was retried to exhaustion on every embed call. The status is now available on the error, and failures are marked retryable or not usingstampRetryablefrom@langchain/core. Error messages are unchanged.ChatFireworksandFireworksalready inherit marking from@langchain/openai.Also forwards a per-call
maxRetriesto the retry loop, so a surrounding retry loop such asmodelRetryMiddlewarecan take over instead of the two multiplying against each other.The
@langchain/corepeer range moves from^1.0.0toworkspace:^, since this release depends onstampRetryable. -
Updated dependencies [
3b0e4c4]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.718 Jun 2024
Release notes2 sources agree
Open source →Patch Changes
- Updated dependencies [
3fe4c43]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.65 Jun 2024
Release notes
Open source →Patch Changes
- Updated dependencies [
e654022]:- @langchain/[email protected]
Additional notes
Open source →Patch Changes
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#11305
e654022Thanks @jacoblee93! - Add LangSmith Gateway environment configuration to OpenAI, Anthropic, and Fireworks chat models. -
Updated dependencies [
e654022]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.531 May 2024
Release notes2 sources agree
Open source →Patch Changes
- Updated dependencies [
a9f123a,09e7f6d]:- @langchain/[email protected]
Additional notes
Open source →Patch Changes
- Updated dependencies [
229a7ad,36fb0ef]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.430 May 2024
Release notes2 sources agree
Open source →Patch Changes
- Updated dependencies [
988ca7d]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.330 May 2024
Release notes2 sources agree
Open source →Patch Changes
- Updated dependencies [
3205b35]:- @langchain/[email protected]
- Updated dependencies [
- 0.2.228 May 2024
Release notes
Open source →Patch Changes
-
#11342
3b0e4c4Thanks @thushanth-bengre-langchain! - feat(google): mark Google provider errors as retryable or notBuilds on
stampRetryablein@langchain/coreso the retry middleware can tell a transient failure from a deterministic one. Timeouts, rate limits, and server errors are marked retryable; bad credentials, blocked prompts, invalid tools, and invalid input non-retryable. Errors that may succeed on a regeneration stay unmarked and retry as before.Also forwards a per-call
maxRetriesto the retry loop, so a surrounding retry loop such asmodelRetryMiddlewarecan take over instead of the two multiplying against each other.The
@langchain/corepeer range moves from^1.0.0toworkspace:^, since this release depends onstampRetryable.
Additional notes2 sources agree
Open source →Patch Changes
- Updated dependencies [
05936ab,798cb70,80c790b]:- @langchain/[email protected]
Additional notes
Open source →Patch Changes
- Updated dependencies [
2301260]:- @langchain/[email protected]
-
- 0.2.126 May 2024
Release notes
Open source →Patch Changes
- #10674
f017708Thanks @christian-bromann! - fix: classify provider 429s before retrying
Additional notes2 sources agree
Open source →Patch Changes
- Updated dependencies [
80b43ec]:- @langchain/[email protected]
Additional notes
Open source →Additional notes
Open source →Patch Changes
- Updated dependencies [
6b8ef6c]:- @langchain/[email protected]
- #10674
- 0.2.017 May 2024
Release notes
Open source →Minor Changes
- #10924
2e28115Thanks @christian-bromann! - feat(together-ai): enable native OpenAI-compatible streamEvents events
Patch Changes
- Updated dependencies [
2e28115]:- @langchain/[email protected]
Additional notes
Open source →Minor Changes
- #10924
2e28115Thanks @christian-bromann! - feat(ibm): add native watsonx streamEvents event conversion
Additional notes
Open source →Minor Changes
- #10924
2e28115Thanks @christian-bromann! - feat(google): add native Gemini streamEvents event conversion
Patch Changes
-
#10537
cdb465bThanks @raashish1601! - fix(google): normalize ChatGoogle callback token usage metadata -
#10586
43b10d2Thanks @tysoncung! - strip type field from executableCode and codeExecutionResult parts
Additional notes
Open source →Minor Changes
- #10924
2e28115Thanks @christian-bromann! - feat(fireworks): enable native OpenAI-compatible streamEvents events
Patch Changes
- Updated dependencies [
2e28115]:- @langchain/[email protected]
Additional notes
Open source →Minor Changes
- #10559
17aedaaThanks @mdrxy! - AddappCategoriesfield for OpenRouter marketplace attribution (X-OpenRouter-Categoriesheader) and update defaultsiteUrl/siteNamevalues. Attribution headers are now only sent when set.
Patch Changes
- Updated dependencies [
d6bf4fc]:- @langchain/[email protected]
- #10924
- 0.2.0-rc.08 May 2024pre-release
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- 0.1.6314 May 2024
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- 0.1.626 May 2024
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- 0.1.6127 Apr 2024
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- 0.1.6024 Apr 2024
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- 0.1.5923 Apr 2024
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- 0.1.5816 Apr 2024
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- 0.1.5611 Apr 2024
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- 0.1.559 Apr 2024
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- 0.1.55-rc.05 Apr 2024pre-release
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- 0.1.544 Apr 2024
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- 0.1.533 Apr 2024
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- 0.1.5227 Mar 2024
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- 0.1.5126 Mar 2024
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- 0.1.5024 Mar 2024
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- 0.1.4920 Mar 2024
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- 0.1.4815 Mar 2024
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- 0.1.4714 Mar 2024
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- 0.1.4614 Mar 2024
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- 0.1.4513 Mar 2024
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- 0.1.45-rc.013 Mar 2024pre-release
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- 0.1.449 Mar 2024
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- 0.1.436 Mar 2024
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- 0.1.426 Mar 2024
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- 0.1.415 Mar 2024
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- 0.1.4029 Feb 2024
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- 0.1.3927 Feb 2024
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- 0.1.3425 Feb 2024
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- 0.1.34-rc.025 Feb 2024pre-release
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- 0.1.3324 Feb 2024
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- 0.1.33-rc.323 Feb 2024pre-release
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- 0.1.33-rc.223 Feb 2024pre-release
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- 0.1.33-rc.123 Feb 2024pre-release
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- 0.1.33-rc.023 Feb 2024pre-release
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- 0.1.3221 Feb 2024
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- 0.1.3121 Feb 2024
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- 0.1.3016 Feb 2024
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- 0.1.2916 Feb 2024
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- 0.1.29-rc.014 Feb 2024pre-release
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- 0.1.2813 Feb 2024
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- 0.1.2711 Feb 2024
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- 0.1.27-rc.211 Feb 2024pre-release
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- 0.1.27-rc.111 Feb 2024pre-release
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- 0.1.27-rc.011 Feb 2024pre-release
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- 0.1.269 Feb 2024
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