Given the size of the niche (developers building voice agents), do you find there's a lot of demand for testing and observability? From my anecdata, many of the voice AI agent builders are using SDKs and builder tools (Voiceflow, Vapi, Bland, Vocode, etc). Observability is usually already baked-in pattern with these SDKs (testing I'm not so sure of).
One conversation I had with a voice agent builder: "Our product is complex enough where external testing tools don't make sense. And we know when things are not working because we have close relationships with power users and companies." Whose problem are you solving?
Your tool looks very powerful, but might the broader opportunity be just to use your evals to roll out the best voice agents yourself?