# Pydantic AI review (2026): is it any good? > Typed Python SDK for building AI agents Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. Pydantic AI is an open-source Python SDK from the Pydantic team for building agents with typed inputs and outputs, tools, and a swappable choice of model provider. Related packages add evals, graph-based control flow and a harness with memory, guardrails and sub-agents. The SDK is free; Pydantic's paid products, Logfire for observability and an AI gateway, are sold separately. - **Category:** AI Agents - **Made by:** Pydantic - **Website:** https://pydantic.dev/docs/ai/overview/ - **Runs on:** Web - **Who should skip it:** Skip it if you want a visual builder, because it is a code library only. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, Pydantic AI is free to use. - **Pricing model:** Free - **Free plan:** The SDK is free and MIT-licensed; you pay your model providers directly. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | Open source | $0 | Install the Python package and run agents in your own code; no paid plan exists for the SDK itself. | Read from https://pydantic.dev/docs/ai/overview/ on Nov 13, 2026. Prices change, so confirm with Pydantic AI before buying. ## Key features - **Typed agent loop:** Agents with typed dependencies and structured output, where any supported model is a string swap and another can be set as a fallback. - **Many model providers:** The docs list providers including OpenAI, Anthropic, Google, AWS Bedrock, Mistral, Groq, Ollama and OpenRouter. - **Harness capabilities:** Add-ons for memory, guardrails, sub-agents, planning, context management and persistence, up to a complete coding agent. - **Evals and graphs:** Pydantic Evals grades outputs and tool-call trajectories, and Pydantic Graph gives typed control flow, as separate open-source packages. - **Durable execution and interfaces:** Integrations with Temporal, DBOS, Prefect and others for long-running work, plus MCP, AG-UI, Vercel AI and a CLI. ## Good for - Python developers who want type-checked agents - Teams that need to switch model providers without rewriting code - Projects that already use Pydantic for validation ## Worth knowing - It is a code library for Python; there is no hosted builder or visual editor. - Observability through Logfire is a separate product: the free Personal plan covers 10M records a month, with Team at $49 and Growth at $249 a month. - The AI Gateway charges a markup on built-in providers (5% on Personal and Team, 3% on Growth) unless you bring your own keys. - Model usage is billed by whichever provider you connect. ## ToolGPA grades **GPA: 3.0 out of 4**, graded Nov 13, 2026. Pydantic AI is an MIT-licensed Python library for building agents with typed inputs and outputs, and you can swap model providers with a string. It is code only, with no builder, and the paid observability and gateway products are sold separately by the same company. - **Value for money: A.** The SDK is free under the MIT licence, so it sits well under the category's $19.99 cheapest-quarter start. Your model provider bills you directly. - **Free plan and trial: A.** No paid plan exists for the SDK itself and nothing is capped, so everything it does is free. Only your model usage costs money. - **Features: B.** Typed agents, many model providers, evals, graphs, memory, guardrails and durable execution via Temporal, DBOS and Prefect. Nothing in the listing shows a gap in the core job of building agents in code. - **Ease of use: D.** No rating on record, and it is a Python library: you write code, manage dependencies and wire up your own tools. No visual editor. - **Platforms and integrations: B.** Runs wherever Python runs, with MCP, AG-UI and a CLI, and works with OpenAI, Anthropic, Google, AWS Bedrock and Ollama. It is not an app, so there is no phone or desktop client. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Pydantic's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among AI agents - Pydantic AI's GPA of 3.0 is higher than 171 of the 178 other AI agents we grade, and level with 4. - It stands best on free plan and trial (A, above 167 of 178) and worst on ease of use (D, above 0). - Pydantic AI has no paid plan. - On features, ease of use and platforms it scores 2.3 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price. The category's chart of price against score: https://toolgpa.com/charts/ai-agents ## Keep it, or make your own? **Keep it.** Pydantic AI is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces. It is one of the better ones too: its GPA of 3.0 is higher than 171 of the 178 other AI agents we grade. - You could not: An AI agent, with the models and the safeguards behind it. - You could not: It plugs into other products, OpenAI, Anthropic and Google among them, and has an API. - You could not: The depth: we grade its features B, which means it covers the whole job. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with OpenAI, Anthropic, Google, AWS Bedrock, Temporal, DBOS, Prefect, MCP **Tags:** AI agents, Open source, Self-hostable, Public API ## Alternatives - [LangGraph](https://toolgpa.com/tools/langgraph): Open-source framework for building controllable AI agents. [Compare](https://toolgpa.com/compare/langgraph-vs-pydantic-ai) - [Mastra](https://toolgpa.com/tools/mastra): TypeScript framework for building and running AI agents. [Compare](https://toolgpa.com/compare/mastra-vs-pydantic-ai) - [Agno](https://toolgpa.com/tools/agno): Open-source agent runtime with a hosted control plane. [Compare](https://toolgpa.com/compare/agno-vs-pydantic-ai) - [CrewAI](https://toolgpa.com/tools/crewai): Multi-agent platform to build, run and govern AI agents. [Compare](https://toolgpa.com/compare/crewai-vs-pydantic-ai) - [LlamaIndex](https://toolgpa.com/tools/llamaindex): Document parsing and extraction platform for AI agents. [Compare](https://toolgpa.com/compare/llamaindex-vs-pydantic-ai) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://pydantic.dev/docs/ai/overview/ - https://github.com/pydantic/pydantic-ai - https://pydantic.dev/pricing Page: https://toolgpa.com/tools/pydantic-ai Listed by ToolGPA (toolgpa.com).