jackmpcollins/magentic

Provides decorator-based function generation with streaming support for structured outputs validated against Pydantic models, automatic LLM-assisted retries to enforce schema compliance, and tool-use orchestration via function calling and chaining. Supports multiple LLM providers (OpenAI, Anthropic, Ollama) with built-in observability through OpenTelemetry and Pydantic Logfire, alongside async/await and concurrent streaming capabilities.

2,394 stars. Actively maintained with 2 commits in the last 30 days.