[LangChain](https://www.langchain.com/) is a framework that eases developing with LLMs. ## Products - [Open Agent Platform](https://docs.oap.langchain.com/) allows non-technical users to build, prototype, and use agents. ## Features - [Force models to call a tool](https://python.langchain.com/docs/how_to/tool_choice/) - [OpenTelemetry support](https://changelog.langchain.com/announcements/end-to-end-native-opentelemetry-support-for-langsmith-sdk) for metrics/analytics ## Alternatives - AutoGPT - GPT-Engineer - LlamaIndex - Microsoft AutoGen ## Contact - Slack - [Join](https://www.langchain.com/join-community) the channel - [Visit](https://app.slack.com/client/T05P4BNF01J/C05NZ3SMWTF) the channel - Email: [email protected] ## Resources - https://chat.langchain.com/?threadId=8b948dfc-7b41-4ce0-8fbd-7dc387aa5fd0 - https://docs.smith.langchain.com/evaluation/how_to_guides/attach_user_feedback ### Traces - Metadata: https://docs.smith.langchain.com/observability/how_to_guides/add_metadata_tags - User feedback: https://docs.smith.langchain.com/evaluation/how_to_guides/attach_user_feedback ### Evals - openevals: https://github.com/langchain-ai/openevals - agentevals: https://github.com/langchain-ai/agentevals