Retell AI
by Retell AI · Founded 2023
Voice agents for inbound and outbound phone calls
Reviewed by the the30top research team · Last reviewed 2026-10-27
Overview
Retell AI lets teams build voice agents that answer and place phone calls, with batch calling for outbound campaigns and a choice of GPT, Claude and Gemini models. Pricing is usage based and published, which makes it easy to cost out a pilot before talking to sales. The catch is that real per-minute cost depends on the model and voice you pick, and add-ons such as batch dialing and branded caller ID are charged on top of the base rate.
Our verdict
A strong pick for teams with some technical capacity who want transparent usage pricing and model choice. Budget for add-ons and expect to wire up your own CRM sync.
Best for
Teams that want to build custom outbound or inbound phone agents and prefer usage pricing to annual contracts.
Avoid if
You need turnkey CRM integrations out of the box and no developer time.
Pros
- Published per-minute pricing with free starter credits
- Wide choice of LLMs including GPT, Claude and Gemini
- Batch calling and branded caller ID for outbound
Cons
- Final cost varies with model and voice choice
- Outbound add-ons are billed on top of the base rate
- Native integrations are thin, so most CRM work goes through webhooks or the API
Key capabilities
Frequently asked questions
How much does Retell AI cost?
Voice agents are billed pay as you go at roughly $0.07 to $0.31 per minute depending on model and voice, with $10 in free credits to start. Batch calls add $0.005 per dial.
Can Retell AI make outbound calls?
Yes. It supports batch outbound calling and branded caller ID, charged as add-ons to the per-minute rate.
Is Retell AI HIPAA compliant?
Retell lists SOC 2 certification and HIPAA readiness with a BAA available on its pricing page. Confirm your own BAA terms with the vendor before handling PHI.