Outlines guarantees valid structured outputs from any LLM. 13.6K+ GitHub stars. JSON, Pydantic, enums, regex constraints during generation.
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pip install outlinesOutlines is a Python library that guarantees valid structured outputs from large language models during generation. With 13,600+ GitHub stars, it works with any LLM (OpenAI, Ollama, vLLM) through a simple model(prompt, output_type) interface. Supports Pydantic models, enums, literals, unions, regex patterns, and JSON schemas.
Best for: Developers needing reliable structured data extraction from LLMs Works with: Claude Code, OpenAI Codex, Cursor, Gemini CLI, Windsurf
Q: What is Outlines? A: Outlines guarantees valid structured outputs from any LLM with 13.6K+ stars. JSON, Pydantic, regex constraints during generation.
Q: How do I install Outlines? A: pip install outlines.
Created by .txt. Open source. dottxt-ai/outlines — 13,600+ GitHub stars
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