# Samuel Colvin (slim)

> 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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- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Founder, Pydantic.

Samuel Colvin created Pydantic, the data validation library for Python, and is founder and CEO of Pydantic, the company that grew out of it.

- 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.

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

Anchor Terminal lists Pydantic AI and Pydantic Logfire from Pydantic, Pydantic Services Inc..

### 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.