# Samuel Colvin

> Samuel Colvin is founder of Pydantic and founder of Pydantic Services Inc.. Pydantic AI and Pydantic Logfire on Anchor Terminal, with grades, an about and public profiles.

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- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

Founder, Pydantic. Founder, Pydantic Services Inc..

Samuel Colvin created Pydantic, the data validation library for Python, and is founder and CEO of Pydantic, the company that grew out of it. He began the library out of frustration that Python type hints do nothing at runtime, and the company now builds products including Logfire and Pydantic AI.

- LinkedIn: https://www.linkedin.com/in/samuel-colvin/
- X: https://x.com/samuelcolvin

## What Samuel builds

- [Pydantic AI](https://www.anchorterminal.com/tools/pydantic-ai.md), graded A, 81.9/100, in Agent frameworks & SDKs. Typed Python agent framework for 25+ model providers, with MCP, A2A and durable execution. Founder, Pydantic, researched 2026-10-26.
- [Pydantic Logfire](https://www.anchorterminal.com/tools/pydantic-logfire.md), graded B, 65.1/100, in Agent observability & evals. Pydantic Logfire is a hosted observability platform built on OpenTelemetry for traces, logs, metrics, LLM cost tracking, evaluations and prompt management. Agents reach it through a remote MCP server, a SQL query API, a public REST API and SDKs. Founder, Pydantic Services Inc., researched 2026-10-26.

## Backed by

- [Sequoia Capital](https://www.anchorterminal.com/investors/sequoia-capital/)
- [Partech](https://www.anchorterminal.com/investors/partech/)
- [Irregular Expressions](https://www.anchorterminal.com/investors/irregular-expressions/)
- [Bryan Helmig](https://www.anchorterminal.com/investors/bryan-helmig/)
- [Tristan Handy](https://www.anchorterminal.com/investors/tristan-handy/)
- [David Cramer](https://www.anchorterminal.com/investors/david-cramer/)

## Questions

### Who is Samuel Colvin?

Samuel Colvin created Pydantic, the data validation library for Python, and is founder and CEO of Pydantic, the company that grew out of it. He began the library out of frustration that Python type hints do nothing at runtime, and the company now builds products including Logfire and Pydantic AI.

### What does Pydantic, Pydantic Services Inc. make?

Anchor Terminal lists Pydantic AI and Pydantic Logfire from Pydantic, Pydantic Services Inc.. Typed Python agent framework for 25+ model providers, with MCP, A2A and durable execution.

### Who has invested in Pydantic, Pydantic Services Inc.?

The sources our research read name Sequoia Capital, Partech, Irregular Expressions, Bryan Helmig, Tristan Handy and David Cramer.

### How are Samuel's tools graded?

Pydantic AI is graded A, 81.9 out of 100; Pydantic Logfire is graded B, 65.1 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://pydantic.dev/authors/samuel-colvin
- https://scolvin.com/
- https://pydantic.dev/
- https://pydantic.dev/docs/ai/
- https://pydantic.dev/about

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

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