{"library":"outlines","type":"library","category":null,"description":"Structured generation library by .txt (dottxt-ai). Guarantees schema-valid outputs at generation time via FSM-based logits masking — no post-processing or retries. Supports regex, JSON schema (Pydantic or raw), CFG, and multiple-choice constraints. Backends: Transformers, vLLM, llama.cpp, MLX, Ollama, OpenAI, Mistral, Gemini. Core FSM engine split into separate outlines-core package (Rust). Two coexisting APIs: legacy outlines.models + outlines.generate.* style, and new 1.x outlines.from_* + model(prompt, Schema) style.","language":"python","status":"active","version":"1.2.11","tags":["outlines","structured-generation","constrained-decoding","json-schema","regex","pydantic","vllm","transformers","llama-cpp","fsm"],"install":[{"cmd":"pip install outlines","imports":["from outlines import Generator"]},{"cmd":"pip install 'outlines[transformers]'","imports":[]},{"cmd":"pip install 'outlines[vllm]'","imports":[]},{"cmd":"pip install 'outlines[llamacpp]'","imports":[]}],"homepage":"https://dottxt.co","github":"https://github.com/dottxt-ai/outlines","docs":"https://dottxt-ai.github.io/outlines/","changelog":null,"pypi":"https://pypi.org/project/outlines/","npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"compatibility":{"summary":{"python_range":"3.10–3.9","success_rate":18,"avg_install_s":31.7,"avg_import_s":null,"wheel_type":"wheel"},"url":"https://checklist.day/v1/registry/outlines/compatibility"},"provenance":{"verified_status":"passing","verified_at":"Mon Jun 29","last_verified":"Mon Jun 29","next_check":"Wed Jul 29","install_tag":"stale"}}