LangChain

Timeline

1. Oct 19, 2026 · Tutorial / explainer · 1 source
   The Model Swap Workshop: GPT-5.5 vs Kimi vs DeepSeek vs Mistral
   Pamela Fox, Principal Cloud Advocate at Microsoft, runs the same scenarios against GPT-5.5, Kimi K2.6, DeepSeek V4 Flash and Mistral Large 3 on Microsoft Foundry so you can see where models differ and what you can do about it.
2. Oct 16, 2026 · Open-source release · 1 source
   langchain-ai/langchain langchain-core==1.6.12
   fix(core): propagate extras on content-block-start events (#41272)
3. Oct 15, 2026 · Model release · 5 sources
   NVIDIA Nemotron 3.5 Super VL Powers Specialized Agents with Multimodal Reasoning
   NVIDIA Nemotron 3.5 Super VL is an open, customizable multimodal model for these specialized workflows.
4. Oct 15, 2026 · Open-source release · 1 source
   langchain-ai/langchain langchain-core==1.6.11
   feat(core): accept address inside LangChainTracer (#41006)
5. Oct 14, 2026 · Open-source release · 1 source
   langchain-ai/langgraph checkpointpostgres==3.2.0: langgraph-checkpoint-postgres==3.2.0
   feat(checkpoint-postgres): add prune to PostgresSaver and AsyncPostgresSaver (#9290)
6. Oct 14, 2026 · Open-source release · 1 source
   langchain-ai/langchain langchain==1.4.6
   feat(langchain): add opt-in per-call interrupts to HITL middleware (#41062)
7. Oct 14, 2026 · Open-source release · 1 source
   langchain-ai/langgraph cli==0.4.35: langgraph-cli==0.4.35
   feat(cli): add --image-pull-secret for deploying through a private registry (#9305)
8. Oct 14, 2026 · Open-source release · 1 source
   langchain-ai/langchain langchain-openai==1.7.2
   fix(openai): keep Responses stream items on one block when outputindex drifts (#41121)
9. Oct 13, 2026 · Open-source release · 1 source
   langchain-ai/langgraph cli==0.4.34: langgraph-cli==0.4.34
   feat(cli): add --json to deploy listeners list (#9243)
10. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langgraph checkpointpostgres==3.1.3: langgraph-checkpoint-postgres==3.1.3
    fix(checkpoint-postgres,checkpoint-sqlite): treat an empty checkpointid as the latest in delta history (#9262)
11. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langgraph checkpointsqlite==3.1.2: langgraph-checkpoint-sqlite==3.1.2
    fix(checkpoint-postgres,checkpoint-sqlite): treat an empty checkpointid as the latest in delta history (#9262)
12. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langgraph sdk==0.4.7: langgraph-sdk==0.4.7
    fix(sdk-py): end a thread stream's run only on a root lifecycle event (#9228)
13. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langgraph 1.2.15: langgraph==1.2.15
    fix(langgraph): give every message written to a messages DeltaChannel an id (#9275)
14. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langgraph checkpoint==4.3.0: langgraph-checkpoint==4.3.0
    fix(checkpoint): default InMemorySaver delta history to the latest checkpoint (#9257)
15. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain==1.4.5
    feat(langchain): accept summarizer in SummarizationMiddleware (#41225)
16. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-anthropic==1.7.6
    chore(deps): bump langgraph-sdk from 0.4.4 to 0.4.6 in /libs/partners/anthropic (#41101)
17. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-openai==1.7.1
    feat(core,anthropic,openai): declare mid-conversation support in model profiles (#41180)
18. Oct 12, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-core==1.6.10
    feat(core,anthropic,openai): declare mid-conversation support in model profiles (#41180)
19. Oct 10, 2026 · Opinion / analysis · 1 source
    [AINews] TypeSafe/Jev at >$100M ARR, $7.5B valuation 3 weeks after launch
    As you can see in the AINews X recap section below, everyone on earth has cloned the Jev API, but only one company can ever create the category.
20. Oct 8, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain==1.4.4
    chore(deps): bump langgraph-sdk from 0.4.2 to 0.4.4 in /libs/langchainv1 (#41074)
21. Oct 8, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-core==1.6.9
    feat(core): accept a callable in withretry (#41158)
22. Oct 8, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-openai==1.7.0
    chore(deps): bump langgraph-sdk from 0.4.4 to 0.4.6 in /libs/partners/openai (#41096)
23. Oct 8, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-core==1.6.8
    fix(core): harden scoped and compatible IPv6 SSRF checks (#41151)
24. Oct 7, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-fireworks==1.7.1
    chore(deps): bump langgraph-sdk from 0.4.4 to 0.4.6 in /libs/partners/fireworks (#41100)
25. Oct 7, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-huggingface==1.2.3
    chore(deps): bump langgraph-sdk from 0.4.4 to 0.4.6 in /libs/partners/huggingface (#41098)
26. Oct 7, 2026 · Open-source release · 1 source
    langchain-ai/langgraph cli==0.4.33: langgraph-cli==0.4.33
    feat(cli): add 'langgraph deploy listeners list' (#9221)
27. Oct 6, 2026 · Open-source release · 1 source
    langchain-ai/langchain langchain-core==1.6.7
    fix(core): include openai redactedcontent in v1 output for bedrock converse (#41086)
28. Oct 6, 2026 · Open-source release · 1 source
    langchain-ai/langgraph 1.2.14: langgraph==1.2.14
29. Oct 6, 2026 · Open-source release · 1 source
    langchain-ai/langgraph sdk==0.4.6: langgraph-sdk==0.4.6
    fix(sdk-py): percent-encode threadid and assistantid in thread stream requests (#9213)
30. Oct 5, 2026 · Open-source release · 1 source
    langchain-ai/langgraph 1.2.13: langgraph==1.2.13
    fix(langgraph): fork before replaying an update checkpoint the thread moved past (#9170)

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