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Structured Outputs

★ 16K902 forksPythonApache-2.0dottxt-ai

Python library for generating schema-constrained outputs from language models. Supports types such as Pydantic models, JSON schemas, and grammars, with integrations for local and hosted inference backends.

Use Cases

Generate schema-valid JSON from LLMsExtract structured fields from emails and documentsClassify products into structured categoriesCreate typed customer support ticketsGenerate data constrained by enums and literalsProduce structured event details from incomplete descriptionsImplement reliable function-calling workflows

Built With

Language
Python
Frameworks
Pydantic · Transformers · vLLM · Ollama · llama.cpp · SGLang · LM Studio · TensorRT-LLM

Tags

structured outputs · constrained generation · JSON generation · grammar constraints · schema validation · LLM programming · provider-agnostic