Jeffrey Ip

Jeffrey Ip is co-founder and CEO of Confident AI, an LLM evaluation platform built around DeepEval, the open-source framework he created. He runs the company with co-founder Kritin Vongthongsri.

Starting DeepEval After Google and Microsoft

Ip worked as a software engineer at Google, scaling YouTube's creator studio infrastructure, and at Microsoft, building document recommenders for Office 365, according to Y Combinator. He started DeepEval so engineers could write evaluation metrics for their own use cases the way they write unit tests, and the open-source package became the engine behind Confident AI's hosted tools for datasets, CI evals, tracing, and red teaming.

Bootstrapping into Y Combinator

In a post on Confident AI's blog he wrote that open-source growth, not advertising, got the team into Y Combinator's winter 2025 batch. “What started off as a bootstrapped open-source package became the thing that got us into YC,” he wrote. Looking ahead, he said the plan is simple: “We're going to double-down on providing the best LLM evaluation for everyone.”