Pydantic AI

Agents, realtime voice, image generation, embeddings. Every model, every interface, typed end to end.

Pydantic AI is the Python AI SDK: a typed, extensible agent loop with every model a string swap away. The same agent runs everywhere you need it : behind a web frontend , in the terminal , on a voice call , on a durable background queue , in GitHub Actions , or as a plain object you call run() on. Image generation and embeddings come in the same box; Pydantic Graph and Pydantic Evals are separate packages, for typed control flow and for testing agent behavior the way pytest tests code.

Pydantic AI Harness has everything an agent needs for complex, long-running work, snapped on as capabilities , from memory , guardrails , and sub-agents to planning , context management , and persistence , up to a complete coding agent .

Pydantic Logfire is the AI observability platform that sees your whole app, not just the LLM calls, and the Pydantic AI Gateway is one key for every model with real-time cost monitoring and budget control; the Gateway self-hosts if you would rather, and our instrumentation is plain OpenTelemetry, so any backend you already run works. Underneath both, genai-prices keeps model pricing current, and Monty is the sandboxed Python interpreter that runs model-written code.