langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- `create_agent` should support bounded forced retry after tool invocation validation errors
- test(huggingface): add missing standard unit tests for ChatHuggingFace
- test(ollama): add missing standard unit tests for ChatOllama
- RFC: track anthropic service tier and geo tokens
- Bug: Inflated Token Usage Reporting for accounts/fireworks/models/qwen3p6-plus with reasoning_effort="none"
- VideoContentBlock ValueError: Block of type video is not supported
- _to_protocol_usage drops input_token_details in v3 streaming path, causing cache token counts to always be 0
- feat(core, anthropic, openai): aclose() lifecycle + latched fallbacks
- OpenAI Responses image content blocks do not support file_id inputs
- EnsembleRetriever: arank_fusion uses different normalization logic than rank_fusion causing ValidationError in async
- Docs
- Python not yet supported