Testing & eval
Coval
About Coval
Coval is a voice AI testing and evaluation company that simulates and evaluates voice and chat agents, scoring them ahead of production and monitoring them once live. Coval also runs public voice AI leaderboards that benchmark speech-to-text, text-to-speech, and speech-to-speech models in real-world conditions, and it benchmarked Flux, Deepgram's conversational speech-to-text model, during early access.
What Coval offers
- Pre-launch simulation, including noisy audio and DTMF flows
- Production monitoring and evals on live calls
- Human review that can override automated verdicts
- Public voice AI leaderboards that benchmark STT, TTS, and speech-to-speech models on accuracy, latency, and quality
Coval and Deepgram
Deepgram and Coval work together on evaluation and co-marketing, from those Flux results to joint sessions at Speak.






