What's Changed

• Update concepts.mdx by @kostasx in https://github.com/langchain-ai/langchainjs/pull/6015
• docs[patch]: Update Cohere docs by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6025
• google-common[patch]: Fix Gemini temperature validation by @jarib in https://github.com/langchain-ai/langchainjs/pull/6039
• ci[patch]: fix Unit Tests (LangChain Integrations) Skipping Test Jobs by @rameshkrishna in https://github.com/langchain-ai/langchainjs/pull/5914
• core[minor]: Fix caching of complex message types by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6028
• core[minor]: Add raw_output field to ToolMessage by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6007
• anthropic[patch]: Pass usage_metadata and response_metadata through when streaming tool calls by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6042
• aws[patch]: Fix empty content bug by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6043
• core[minor]: RunnableToolLike by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6029
• core[patch]: Rename ToolMessage.raw_output => artifact by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6055
• core[minor],openai[patch],langchain[patch]: Allow tool functions to input ToolCall / return ToolMessage by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6005
• core[patch]: Cleanup tool tests file by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6063
• docs[patch]: Update Custom Chat Model/LLM docs to use stream events v2 by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6064
• docs[patch]: Update docs with streamEvents v1 to v2 by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6065
• core[patch]: Populate tool name in ToolMessage return value by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6066
• partners[patch]: Add type field to all tool call integrations by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6067
• core[patch]: Adds support for custom events by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6062
• core[minor]: Allow concatenation of messages with multi part content by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6057
• core[patch]: Release 0.2.16 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6068
• anthropic[minor]: Implement actual anthropic tool call streaming by @bracesproul in https://github.com/langchain-ai/langchainjs/pull/6056
• multiple[patch]: Bump tool partner package deps by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6069
• community[minor] HuggingFaceTransformersEmbeddings enhancements by @toboid in https://github.com/langchain-ai/langchainjs/pull/6059
• langchain[patch]: Bug fix for ParentDocumentRetriever by @clemenspeters in https://github.com/langchain-ai/langchainjs/pull/6061
• community[patch]: Adds support for Bedrock Anthropic tool streaming by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6070
• openai[patch]: Release 0.2.2 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6072
• anthropic[patch]: Release 0.2.4 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6073
• aws[patch]: Release 0.0.2 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6074
• cohere[patch]: Release 0.2.1 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6075
• google-common[patch]: Release 0.0.20 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6076
• google-genai[patch]: Release 0.0.22 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6077
• groq[patch]: Release 0.0.14 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6078
• mistralai[patch]: Release 0.0.26 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6079
• community[patch]: Release 0.2.19 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6080
• Release 0.2.10 by @jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/6081

New Contributors

• @kostasx made their first contribution in https://github.com/langchain-ai/langchainjs/pull/6015
• @toboid made their first contribution in https://github.com/langchain-ai/langchainjs/pull/6059

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/0.2.9...0.2.10