LangChain
Framework and platform for building production LLM applications
freemiumFree OSS; LangSmith from $39/mo
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Framework and platform for building production LLM applications
Open-source platform to build and deploy LLM apps and AI agents
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AI code completion and chat integrated with GitHub
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AI-native IDE with agentic coding and deep context
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Structured LLM outputs with Pydantic validation
Managed vector database for AI search and retrieval workloads