Outlines
Structured text generation for language models
Outlines is a Python library for guiding language model output into structured formats such as JSON, regular expressions, and grammars. It can be self-hosted as a serving layer to guarantee schema-conformant generation.
Key features
- Guaranteed JSON output
- Regex and grammar constraints
- Works with local models
- Fast structured decoding
Strengths
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Mature project with 15.5k GitHub stars
- Written in Python
Outlines replaces
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