LangWatch

LangWatch is the open-source platform to test, evaluate, and govern AI agents. Teams simulate multi-turn and voice agents before release, evaluate them live in production, and govern every agent across the org through an AI gateway. The result: proof that agents work before they ship, and every day after. OpenTelemetry-native, self-hostable, ISO 27001 and GDPR compliant. Built in Amsterdam, trusted in production by enterprises in banking and payments including Deloitte, Backbase, and PagBank.