Pydantic AI
ai.pydantic.dev
Python agent framework from the Pydantic team.
Quick Information
- Category:
- AI Agents & Automation
- Pricing:
- Free
- Platforms:
- Python
- Free Plan:
- Yes
- API Available:
- Yes
- Last Verified:
- October 2026
What Is Pydantic AI?
Pydantic AI is an agent framework from the Pydantic team, announced in December 2024 for production-grade LLM applications. Its approach is type safety. You declare an agent's output as a Pydantic model and the framework validates each model response against it at runtime, with dependency injection for passing data and services into tools. Multiple sources describe it as MIT-licensed, which permits commercial use.
The framework is free. The paid product in the ecosystem is Pydantic Logfire, the observability platform. Since January 1, 2026 Logfire has a free Personal plan with 10M records a month, 1 seat and 3 projects, Team at $49 a month for 5 seats and 5 projects, Growth at $249 a month with unlimited seats and projects, and custom Enterprise with self-hosting and SSO, with $2 per million over the allowance on Team and Growth. Logfire is optional.
Version information is unresolved. One source says a V2 line launched in June 2026 and V1 still gets security fixes, while others list v1.x, such as v1.85.1 from April 22, 2026, and another gives v2.6.0 or 2.42.0. Star counts also range from about 16.5K to 19.9K. Check the repo or PyPI.
Pydantic AI suits Python teams that already use Pydantic and want typed, validated agent outputs. Compare Agno, Smolagents and LangGraph. Browse the AI Agents & Automation tools directory for more.
What Can You Use Pydantic AI For?
Validated structured outputs
Typed agent responses.
Production agents
Dependency injection for tools.
Observability
Optional Logfire tracing.
Pydantic AI Features
- Typed outputs — Validated against Pydantic models.
- Dependency injection — Pass services to tools.
- Logfire integration — Optional paid observability.
Who Is Pydantic AI For?
- Python developers — Familiar Pydantic model.
- Production AI teams — Validation and observability.
Pydantic AI Pros & Limitations
What We Like
- Strong type safety
- Free and permissively licensed
- From the Pydantic team
Limitations
- Version numbers conflict across sources
- Python only
- Logfire costs extra for scale
Pydantic AI Pricing
| Plan | Price | Main Features |
|---|---|---|
| Framework | Free (MIT, per multiple sources) | LLM API fees separate |
| Logfire Personal (optional) | $0 | 10M records a month, 1 seat, 3 projects |
| Logfire Team (optional) | $49/month | 5 seats, 5 projects, $2 per million over allowance |
| Logfire Growth (optional) | $249/month | Unlimited seats and projects |
Pricing was last verified October 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #1032
- Overall Score:
- 35.3/100
- Monthly Users:
- –
- Rank Change:
- ▼ 270
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Pydantic AI or its company. How Our Rankings Work
Frequently Asked Questions
Is Pydantic AI free?
Yes, the framework is MIT-licensed.
Do I need Logfire?
No, it is optional.
How much is Logfire Team?
$49 a month.
What is the latest version?
Sources conflict; check PyPI.
Our Take
Pydantic AI brings validation discipline to agents.
Verify the current version before pinning.
Pydantic AI Alternatives
Pydantic AI Comparisons
Ready to try Pydantic AI?
Visit the official website to get started.
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