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Lemma
ActiveReliability platform for AI agents
F25·Fall 2025·B2B·San Francisco, CA, USA·Team of 2·Founded 2025
About
Lemma catches the silent, semantic failures your observability tools miss, where your AI agent looks like it worked but didn’t. We scan every trace to surface issues before users complain, identify root causes, and help you fix them without manual digging, so your agents improve over time.
Founders
Jerry Zhang· FounderCo-founder @ Lemma (YC F25) | Reliability platform for AI agents
Cole Gawin· Founderdeveloping the next generation of intelligent systems @ lemma (f25) | ex-USC
Product launches · 1 launch
We enable AI agents to continuously improve by turning real user feedback into automated prompt optimizations.