Guillermo Rauch

AI-native observability and evaluation platform that helps engineering and product teams evaluate, log, and monitor AI agents and large language model interactions in production. Built on a custom database optimized for massive AI trace data, the platform enables teams to run experiments against real datasets, compare prompts side-by-side, catch regressions in CI, and inspect every trace with real-time latency, cost, and quality metrics.

Upstash is a serverless data platform that provides managed Redis, Kafka, and QStash services with per-request pricing. The platform targets developers building data-intensive and edge computing applications, scaling to zero when idle and serving over 85,000 developers.