Google ADK vs Pydantic AI

Pick two tools from the same category to compare side-by-side.

	Google ADK Open-source, code-first toolkit from Google for building, evaluating, and deploying AI agents.	Pydantic AI Type-safe Python agent framework built by the Pydantic team around validated structured outputs.
Category	framework	framework
Vendor type	hybrid	open source
Pricing	freemium	free
Strengths	+ Code-first design with explicit control over orchestration and tools + Native multi-agent composition and delegation + Built-in evaluation and local dev CLI (adk run, adk web) + Backed by Google with paths to managed Vertex AI deployment	+ Strong type safety and validated structured outputs + Familiar, ergonomic API for Pydantic users + Model-agnostic with broad provider support + Native OpenTelemetry/Logfire observability
Tradeoffs	− Newer framework with a smaller community than longer-established options − Strongest ergonomics within the Google/Gemini and Cloud ecosystem	− Younger framework with a smaller ecosystem than incumbents − Fewer built-in high-level multi-agent orchestration abstractions − APIs still maturing
Used in stacks	0	0