Build production-grade AI agents with Pydantic AI — tools, capabilities, structured output, streaming, and testing patterns — and port existing agents over from LangChain, the OpenAI Agents SDK, Google ADK, Mastra, Agno, Pi, the Claude Agent SDK, and the Vercel AI SDK.
Instrument applications and infrastructure, investigate telemetry, and manage Pydantic Logfire workflows across Python, TypeScript, Rust, or any language.
Extend Pydantic AI agents with batteries-included capabilities from pydantic-ai-harness — coding agents and sandboxed workspaces, Code Mode, sub-agents and planning, memory, context management, and guardrails — and port LangChain Deep Agents applications over to the harness.
Validate and serialize data with Pydantic — modeling patterns, constraints, custom validators, coercion, and discriminated unions.
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