Retell AI Review 2026
Last reviewed November 2026 by Théo Pascard
Overview
Retell AI is a platform for building AI phone agents that answer inbound calls and place outbound ones. Agents qualify leads, check calendars and book appointments, navigate phone trees, run batch call campaigns with branded caller ID, and hand over to a human with an AI summary on warm transfers. Teams build in a no-code studio or through APIs and SDKs, connect telephony by SIP trunking, and plug into HubSpot, Go High Level, n8n, Make, Twilio and Vonage. It claims 4,000+ businesses in production, with CVS Health, Lenovo and Opendoor among the logos. On G2 it holds 4.8 out of 5 from 2,652 reviews, ease of use far ahead of other strengths. It is billed by the minute, from $0.07 to $0.31 for voice, with $10 of free credits.
Enjyn Score
iWeighted across 5 axes, computed from public review data (G2, Capterra) and reweighted on our rubric — then overridden on the axes we operate first-hand.Who it's for
- →Teams automating inbound qualification and appointment booking by phone
- →Agencies and builders shipping voice agents for clients
- →Contact centers moving routine calls to AI
- →Developers who want APIs, SDKs and SIP trunking
Not for
Capabilities
- Inbound and outbound AI voice agents, plus chat agents
- Lead qualification, calendar checks and appointment booking
- Cold, warm and two-way warm transfers with AI call summaries
- Batch call campaigns with branded caller ID and verified numbers
- IVR navigation and extension dialing
- No-code studio, APIs, SDKs and SIP trunking
- Choice of voice and LLM models, priced per minute
- Integrations with HubSpot, Go High Level, n8n, Make, Twilio and Vonage
Ratings & reviews
👍 Pros
👎 Cons
Pricing
| Tier | Price | Credits / mo | Notes |
|---|---|---|---|
| Pay as you go | Free | — | No platform fee: voice agents cost $0.07 to $0.31 a minute depending on the voice and LLM chosen (voice engine $0.055 a minute, telephony $0.015, text-to-speech from $0.015, LLM from about $0.002), chat agents from $0.002 a message. $10 of free credits, 20 free concurrent calls, then $8 per extra concurrent call a month; phone numbers $2 a month. Billed to the second, failed calls not billed. Checked 2026-11-12. |
| Enterprise | Custom | — | Custom pricing and concurrency from 50+ calls, custom MSA/DPA and BAA, SSO, data retention controls, 24/7 support and a named account manager. |
The honest take
Where it breaks
The verdict
Alternatives
FAQ
How much does Retell AI cost?
Retell AI has no platform fee on pay as you go: a voice agent costs $0.07 to $0.31 a minute depending on the voice and model you pick, chat agents start at $0.002 a message, and new accounts get $10 of free credits. The first 20 concurrent calls are free, then $8 per extra concurrent call a month, and phone numbers cost $2 a month. Enterprise pricing is custom.
What do G2 reviewers say about Retell AI?
Retell AI has 2,652 G2 reviews averaging 4.8: 2,474 five-star, 163 four-star, 9 three-star, 2 two-star and 4 one-star. Ease of use dominates the strengths (495 mentions), then helpfulness, the interface and integrations. Complaints point to missing features (116), cost (87), the learning curve (80), limited features (66) and agents misunderstanding callers (64).
Retell AI vs Synthflow: which one?
Both build AI phone agents for inbound and outbound calls. Retell AI is self-serve and billed by the minute with free credits to start, which suits builders and agencies. Synthflow now sells annual enterprise agreements with no trial and no per-minute rate, aimed at contact centers and multi-location brands.
Can Retell AI replace a sales dialer?
No. A dialer helps human reps place more calls; Retell AI replaces the human on the call. It fits qualification, booking and routine follow-up calls, while live discovery and closing stay with reps on a dialer such as Orum, Nooks or Aircall.
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