Pick Coval if
voice-agent teams who will pay $100 / mo for 100 simulation minutes.
Read the Coval pageCoval vs Vapi
Our take
Pick Coval if you're on a voice-agent team who will pay $100 / mo for 100 simulation minutes. Pick Vapi if you're a builder who want a voice agent with a Dashboard plus an API, and will pay hosting + provider pass-through. Skip Coval if you're people who only need a prompt eval YAML (Promptfoo). Skip Vapi if you're on a team that want one all-in per-minute rate with LLM/STT/TTS included (Bland).
Best for
Coval Measure the agent before customers hear it
Vapi A phone or web voice agent you can publish
Free plan
Coval No free plan
Vapi No free plan
Lowest paid
Coval Enterprise $4
Vapi No Success Package $5
Next step up
Coval Starter $100
Vapi Pro $999/mo
Coding agent
Coval Simulations
Vapi
Watch out
Coval No public $0 plan
Vapi Hosting is $0.05/min plus providers
Last checked
Coval 2026-10-28 · coval.ai/pricing
Vapi 2026-10-22 · vapi.ai/pricing
Which one, then?
Pick Vapi if
builders who want a voice agent with a Dashboard plus an API, and will pay hosting + provider pass-through.
Read the Vapi page