Vapi
Voice AI agent platform. Build plan usage-based: $0.05/min Vapi hosting (model/STT/TTS at cost, $0 with your own keys), SMS/chat $0.005/msg, 10 call concurrency included ($10/line/
Vapi scores 4.6/10 for free value in Agents. The main constraint: Paid — Usage-based; $0.05/min Vapi hosting (60+ min included). Voice AI agent platform. Build plan usage-based: $0.05/min Vapi hosting (model/STT/TTS at cost, $0 with your own keys), SMS/chat $0.005/msg, 10 call concurrency included ($10/line/mo extra). HIPAA add-on $2k/mo.
Free value score
4.6 / 10Show the math
Key metrics
What you get
Paid — Usage-based; $0.05/min Vapi hosting (60+ min included). Voice AI agent platform. Build plan usage-based: $0.05/min Vapi hosting (model/STT/TTS at cost, $0 with your own keys), SMS/chat $0.005/msg, 10 call concurrency included ($10/line/mo extra). HIPAA add-on $2k/mo.
$0.05/min platform fee with at-cost model passthrough — among the cheapest voice-agent runtimes
Gotchas
No gotchas documented yet. Contribute one if you know a constraint we missed.
Sources
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"Calls $0.05 / min ... Model Provider Cost ... At cost ($0 if you bring your own API key)"
https://vapi.ai/pricing