SF AI Builders Meetup 2026

​Join us for an SF AI Builders Meetup to kickoff the year!

​We’re excited to bring together engineers, PMs, founders, builders in the Comma Community in San Francisco to our favorite happy hour spot.

​Whether you’re vibe coding, building the next AI dev tool, scaling infra for your company, prompt engineering, tinkering on an early idea, looking for cofounders or exploring something new, come hang out!

​​About Comma Capital: Comma Capital is an early stage pre-seed and seed fund started by Penn alums David Ongchoco & Adarsh Bhatt. Comma runs a community of early stage builders and hosts hundreds of community events in NYC & SF.

​​About Lemma: Lemma is the AI experimentation platform for next-gen prompt engineering. In just two steps, we provide teams with the infrastructure to set up structured experiments, measure performance with LLM observability, and automatically optimize prompts and model configurations over a dataset of tests. For teams without curated datasets, Lemma includes an LLM-as-a-judge evaluation framework to enable reliable testing from day one.