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Comparison
A factual side-by-side. Where we have not done hands-on work with a tool, the editorial rating is left blank rather than guessed at.
| Feature | Retell AI | Vapi |
|---|---|---|
| What it is | Voice AI agents for inbound and outbound calling | Build and deploy AI voice agents that handle phone calls |
| Primary category | voice ai | voice ai |
| Pricing model | Usage-based | Usage-based |
| Pricing notes | Usage-based pricing per minute. Verify current rates on the official pricing page. | Usage-based pricing per minute plus underlying model and telephony costs. Verify on the official pricing page. |
| Free plan | No | No |
| Free trial | Yes | Yes |
| AI functionality | Yes | Yes |
| Key capabilities |
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| Integrations |
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| Best for | Businesses wanting a phone agent without building telephony from scratch | Businesses working with a developer or implementation partner |
| Business size | Small to mid-size | Small to mid-size with technical support |
| Editorial rating | Not yet rated | Not yet rated |
| Trade-offs |
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| Visit | Official site(opens in a new tab) | Official site(opens in a new tab) |
Ratings are Scale AI Pros editorial assessments based on published vendor information and hands-on implementation experience. They are not user reviews. Pricing and features change often — confirm on each vendor’s official site before committing.
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