# Retell AI vs Vapi
_Voice Agents · independent comparison_

> Retell AI and Vapi are both commercial voice agents. GitHub stars don't measure commercial adoption, so weigh them on pricing model, capabilities, and how you want to buy — not on a star count.

## Side by side

**Retell AI**
- Paid product · Platform
- Best for: Production AI phone agents with low latency and strong call-handling primitives.
- Avoid if: You need on-premise deployment of voice infrastructure.
- [listing](https://agentsearchengine.app/agents/retell-ai) · [official](https://retellai.com)

**Vapi**
- Paid product · Platform
- Best for: Developers building production voice agents with full API control over models, voices, and telephony.
- Avoid if: You want a no-code builder — Vapi is developer-first.
- [listing](https://agentsearchengine.app/agents/vapi) · [official](https://vapi.ai)

## Which to choose

**Choose Retell AI if:** Production AI phone agents with low latency and strong call-handling primitives.

**Choose Vapi if:** Developers building production voice agents with full API control over models, voices, and telephony.

## FAQ

**What's the main difference between Retell AI and Vapi?**
Both are voice agents built for a similar job; the differences are subtle — compare them on pricing and delivery model in the table above.

**Is Retell AI or Vapi better?**
Neither is universally better. Retell AI is the stronger fit for Production AI phone agents with low latency and strong call-handling primitives; Vapi for Developers building production voice agents with full API control over models, voices, and telephony. Use the side-by-side specs to decide by your own constraints.

**Is Retell AI or Vapi free?**
Retell AI is a paid product; Vapi is a paid product.

**Which is more popular, Retell AI or Vapi?**
We rank open-source projects by GitHub adoption, but at least one of these is a commercial product and stars don't measure commercial adoption — so compare them on capabilities and pricing instead.

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Source: [Agent Search Engine](https://agentsearchengine.app) — https://agentsearchengine.app/compare/retell-ai-vs-vapi