Respan, the first proactive AI observability platform that closes the loop from evals to production, announced that it has raised $5M in funding from Gradient, Y Combinator, Hat-Trick Capital, XIAOXIAO FUND, Antigravity Capital, and Alpen Capital along with prominent angels and AI founders. The company will use the funds for hiring and continuing to scale its AI observability platform.

Respan (previously known as Keywords AI) is also launching a first-of-its-kind automated evaluation agent that lets teams define success with metric-first workflows, continuously evaluates production agent behavior, and turns results into actions.