langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- langchain-openai: Responses API streaming silently drops response.failed/error events. A failed stream is indistinguishable from a successful completion.
- feat(langchain): add subagent middleware
- feat(openrouter): implement missing Rerank component for existing partner package
- Feature: Add Responses API support to ChatOpenRouter (use_responses_api=True)
- RunnableWithFallbacks.stream()/astream() misinterpret a legitimately empty upstream stream as a failure
- fix(openai): route reasoning tool calls to Responses API
- docs: Document multimodal input formats in ModelProfile to resolve TODOs
- AddableDict silently drops data on type-incompatible merge (langchain_core.runnables.utils)
- Add TokenBudgetMiddleware for token-usage budgets in agents
- feat(fireworks): add prompt caching middleware
- Docs
- Python not yet supported