About
Jerry Zhang is a co-founder of Lemma, an AI agents reliability platform supported by Y Combinator's F25 cohort.
Jerry Zhang @zjearbear
If you’re not caught up with agent observability, you’ll fall behind Agents are getting good, but they’re nothing without reliability One failure and the user churns So we made Lemma Weekly, an editorial on AI agent monitoring, observability, and reliability. Issue 002:
Jul 31, 2026 · ♥ 18
Jerry Zhang @zjearbear
Agents fail silently. Dropped tool calls, stuck loops, missed instructions… failures that never throw an error. Your traces say "completed." The user churns anyway. This cannot keep happening. So we built @uselemma_ai https://t.co/FUhzmeEa26
Jul 28, 2026 · ♥ 27
Jerry Zhang @zjearbear
i need someone who loves me the way penelope loved odysseus https://t.co/H3NaR5jAFf
Jul 27, 2026 · ♥ 28
Founder at LemmaYC F25
Intro paths
Jerry went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Lemma's batch and knows the company first-hand. YC profile ↗
In turn, Jerry can intro founders to Lemma's investors below.
Lemma's investors · 2
Co-founders at Lemma
