PyPI
langchain
Building applications with LLMs through composability
agentsaiai-agentsanthropicchatgptdeepagentsenterpriseframework
github.com/langchain-ai/langchaindocs.langchain.com/MIT37.1M / week149k · 24.9k forks · 3.7k contributors
Release cadenceEvery 6 days
Last releaseOct 21, 2026
Open advisories0
Changelog quality83% curated
GitHub Releases, gaps for some releases
Release history SecurityYou're on
322 older or filtered releases not shown.
Upgrade guides
Breaking changes and a migration checklist for each major versionlangchain 0.3 → 10.3.30 → 1.4.7Oct 21, 2026 BreakingBreaking17Security14Platform5Deprecated13New113Changed149Fixed157Other331langchain 0.2 → 0.30.2.17 → 0.3.30May 7, 2026 BreakingSecurity2Platform2Deprecated4New8Changed35Fixed17Other2langchain 0.1 → 0.20.1.20 → 0.2.17Nov 4, 2024 BreakingBreaking1Security5Platform1Deprecated1Changed18Fixed8Other5langchain 0.0 → 0.10.0.354 → 0.1.20May 10, 2024 BreakingSecurity2Platform3New5Changed20Fixed8Other1
VersionChannelDateChangesSecurity
1.4.7 StableOct 21, 2026New2Changed4Other21.4.6 StableOct 14, 2026New11.4.5 StableOct 12, 2026New11.4.4 StableOct 8, 2026Changed6Fixed1Other21.4.3 StableSep 28, 2026New1Changed1Fixed3Other21.4.2 StableSep 18, 2026Fixed11.4.1 StableSep 16, 2026Fixed1Other21.4.0 StableSep 3, 2026New1Changed1Fixed1Other21.4.0a4 AlphaSep 2, 2026Breaking22Security2Platform1Deprecated4New86Changed90Fixed124Other2751.4.0a3 AlphaSep 1, 2026New6Changed11.4.0a2 AlphaAug 28, 2026New16Changed7Other11.4.0a1 AlphaAug 27, 2026Breaking14Security2Platform1Deprecated3New79Changed84Fixed118Other3031.3.18 youStableAug 27, 2026Fixed21.3.17 StableAug 25, 2026Changed1Fixed1Other11.3.16 StableAug 20, 2026New2Fixed2Other21.3.15 StableAug 11, 2026Security1New5Changed6Fixed10Other51.3.14 StableJul 16, 2026New1Fixed1Other11.3.13 StableJul 10, 2026New2Other21.3.12 StableJul 8, 2026Fixed3Other31.3.11 StableJun 22, 2026Changed1Fixed1