Evals London #1

Samuel Colvin, who created Pydantic and now runs the company behind Pydantic AI and Logfire, opens the first Evals London with a keynote on evaluation and prompt optimisation. After the talk the room splits into small discussion groups. Bring the eval problem you haven't cracked, the LLM judge you only half trust, or the test set that stopped catching regressions. The organisers rule out sales pitches from the stage and in the groups. It's the London sibling of evals.cz, which has run four Prague meetups since February, all with waitlists. Hosted by Dawn Capital at its Soho office in Ilona Rose House, check-in from 18:00. Free, but it's full and approval-gated, so you're joining a waitlist. Register with your full name for building security. Why go: evals are where most LLM products quietly fail, and this is a practitioner room with a strong opener and no vendor noise. Best for engineers, data scientists and PMs who own AI quality.