Vapi
Build phone and web voice agents with configurable models and tools.
Sources and review
Checked against public documentation on . Suitability guidance is our editorial judgment; this is not a performance benchmark or an endorsement.
Teams building phone or web voice agents that need configurable model providers and integrations with existing APIs.
You need the framework, hosting and model usage to be covered by a single open-source license; evaluate the managed service and provider costs separately.
About Vapi
Vapi is a managed platform for creating phone and web voice agents. Its documentation covers dashboard-based phone-agent setup, API and SDK integrations, and configurable speech and language-model providers. Evaluate call transfers, tool failures and the complete service cost against your own call scenarios.
Vapi vs. the alternatives
All 32 alternatives →| Record | Stars | Pricing | ||
|---|---|---|---|---|
| Vapithis listing | — | — | — | Paid product |
| Pipecat | 16k | Python | BSD-2-Clause | Open source |
| LiveKit Agents | 14k | Python | Apache-2.0 | Open source |
| xiaozhi-esp32-server | 11k | JavaScript | MIT | Open source |
| ten-vad | 2.3k | C | — | Open source |
| bailing | 1.8k | Python | MIT | Open source |
