Samuel Colvin is a Python and Rust developer, and Founder of Pydantic Inc., backed by Sequoia to build Pydantic Logfire (AI observability) and PydanticAI (production grade Agent Framework).

The Pydantic library, which he created in 2017, is downloaded over 300M times per month and is a core component of virtually every GenAI Python library (both provider SDKs and agent frameworks).