Home / Directory / AI SaaS tooling / AI voice agents / Retell AI
Retell AI
Developer platform for building, testing, and monitoring AI phone agents with published per-minute economics and production QA tooling.
Product and platform teams that want to ship inbound or outbound voice agents with control over models, voices, and telephony without a managed contact-center program.
Contact centers that want a fully managed enterprise voice outsourcer with white-glove conversation design and no in-house builders.
Co-founded by Bing Wu.
Verdict
Retell AI is a good fit when your voice agent is a product you will keep shipping, not a black-box contact-center outsourcing deal. Public commercial packaging is unusually clear for this category, with pay-as-you-go minutes and an enterprise path when concurrency and compliance tighten. Practitioners like latency and monitoring; teams that want vendor-led conversation design with no builders on staff may still prefer PolyAI-class peers.
Score Breakdown
How Retell AI scores in the categories that matter to its buyers.
Pricing
Retell AI publishes pay-as-you-go voice pricing on retellai.com/pricing. Figures below are USD list signals as of September 2026; fully loaded minutes depend on LLM, TTS, and telephony choices, and Enterprise remains quote-led.
| Plan / SKU | Meter | Price (USD) | What stands out |
|---|---|---|---|
| Pay as you go | per minute | About $0.07–$0.31 | Platform + model/voice mix; no annual minimum |
| Typical fully loaded call | per minute | About $0.11–$0.31 | Depends on LLM/TTS/telephony stack |
| Concurrency beyond 20 | per concurrent / month | $8 | First 20 concurrent calls included |
| Enterprise | annual | Custom quote | SSO, HIPAA path, dedicated support |
The Field at a Glance
How Retell AI compares with other AI voice agents vendors we reviewed, by Overall Score and relative typical engagement cost.
Retell AI scores 8.3 in AI voice agents, ahead of PolyAI (7.8), Vapi (7.7), and Bland (6.8). Relative cost lands mid-low on published per-minute meters versus managed enterprise programs.
Compared with …
- Retell AI vs PolyAI 8.3/7.8
- Retell AI vs Vapi 8.3/7.7
Use-case matrix
| Use case | Fit | Notes |
|---|---|---|
| Custom voice agent development | Strong | Core Retell motion. |
| Telephony orchestration & monitoring | Strong | Native platform path. |
| Published usage economics | Strong | Clear per-minute cards. |
| Fully managed contact-center CX | Mixed | PolyAI often fuller service. |
| Plain STT/TTS API only | Weak | Deepgram/ElevenLabs lane. |
| Document IDP extraction | Poor | Wrong subcategory. |
Who it’s for
Good fit
- Teams building voice agents as product
- Platform groups that want model and voice choice
- Buyers who prefer published usage meters
Poor fit
- Centers that want only managed CX outsourcing
- Teams with no engineering to own prompts
- Buyers shopping for meeting notetakers only
Review Excerpts
Below are excerpts from public reviews. Paid reviews and pay-for-play sites such as Clutch were excluded.
“We shipped a working inbound agent quickly because telephony wiring and simulation testing were already in the platform.”
“Per-minute economics made it easier to budget a pilot than a six-figure managed suite.”
“Retell’s headline platform fee was only the start. Which LLM and voice we picked changed the fully loaded per-minute price.”
“We prototype agents on Retell, pin prompts in git, run simulation suites before launch, and keep human escalation in the existing call center.”
Methodology
This page is an independent evaluation of Retell AI for buyers comparing options in ai voice agents. AI Industry Reviews accepts no sponsorships, advertising, or pay-for-placement fees. Retell AI did not pay for this review.
What we scored
The headline number is an Overall Score on a 0-10 scale. Eight criteria sit under it in two groups.
- Buyer outcomes (for ai voice agents)
- Voice quality & latency
- Developer orchestration & APIs
- Production monitoring / QA
- Managed contact-center services
- Company & commercial
- Innovation & product leadership
- Project management & communication
- Pricing
- Contract fairness
Pricing measures whether the price looks fair for the value delivered, including packaging and renewal friction that show up in real buying cycles.
Score Composition
| Input | Weight | What it covers |
|---|---|---|
| Reviews | 40% | A proprietary read of what practitioners say about likes, complaints, and day-to-day use, including public review sites, forums, and private chat rooms. Paid reviews and pay-for-play sites such as Clutch are out of scope. |
| Product | 35% | Hands-on look at screens and workflows. |
| Pricing | 15% | Whether the price looks fair for what you get. |
| Docs & training | 10% | Docs, tutorials, and training material. |
How we balanced the evidence
The Overall Score is the simple average of the eight criteria. Recommendation language follows that score and the fit pattern described above.
Scope
Retell AI is graded here as ai voice agents. Criteria scores can move as more review volume and product checks are added.