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Does LangChain have Structured Output (JSON)?
YES
Structured output parsers / tool args are a core pattern.
Does LangChain have Structured Output (JSON)?
LangChain supports Structured Output (JSON). Guarantees that the AI response will strictly adhere to a specific JSON schema, essential for reliable software engineering. LangChain is an open-source agent framework (LangChain, LangGraph, Deep Agents) with 350M+ monthly downloads. Structured output parsers / tool args are a core pattern.
- Tool
- 🦜 LangChain by LangChain
- Feature
- Structured Output (JSON) · Developer
- Status
- Yes, requires free plan
- Notes
- Structured output parsers / tool args are a core pattern.
- Pricing
- Requires free plan.
- Source
- langchain.com
- Last verified
- 2026-09-02