Vapi vs Retell AI vs Bland AI
All three build voice agents that make and take phone calls. They differ in how much you assemble yourself, how the pricing works, and how much of the call operation is handled for you.
 |  |  | |
|---|---|---|---|
| What it does | Build voice agents that make and take phone calls | Build voice agents that make and take real calls | Phone agents that handle calls start to finish |
| Pricing | Free | Freemium | Paid |
| Open source | No | No | No |
| Self-hostable | No | No | No |
| Best for | Best for developer teams that want full control over the model, voice and tools behind each call. | Best for teams that want production call handling quickly, with a free tier to test on real calls. | Best for high-volume outbound and inbound calling where the platform handles the telephony operation end to end. |
| Upvotes | 9 | 1 | 1 |
The verdict
Best for developer teams that want full control over the model, voice and tools behind each call.
Best for teams that want production call handling quickly, with a free tier to test on real calls.
Best for high-volume outbound and inbound calling where the platform handles the telephony operation end to end.
Frequently asked questions
Which one is easiest to start with?
Retell AI and Bland AI get you to a working call fastest. Vapi takes more setup but gives you the most control over each part of the call.
Can I use my own language model or voice?
Vapi is the most flexible here, letting you choose the LLM, the text-to-speech voice and the tools the agent can call mid-conversation.
Do they handle inbound as well as outbound calls?
Yes. All three support inbound support lines and outbound calling, though the routing and concurrency limits differ by plan.