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Retell AI

Retell AI

Freemium

Developer platform for building enterprise-grade AI phone call agents with pay-as-you-go pricing.

Best for: building custom ai phone agents embedded inside saas products via api, enterprise inbound call center automation with concurrent call scaling

★★★★☆4.51,250 aggregate ratings🔥 Trending

Verified by editorial·Last updated: November 2026·How we rank

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Editor's verdict

Retell AI is one of the strongest freemium tools in its category, rated 4.5/5 by 1,250 users. Best for building custom ai phone agents embedded inside saas products via api and enterprise inbound call center automation with concurrent call scaling. Standout: category-leading traction: $50M ARR with 300-plus percent QoQ growth. Watch out: layered per-minute pricing becomes complex to model at scale.

About Retell AI

Retell AI is the leading developer-focused platform for building and deploying AI voice agents at enterprise scale. Founded and growing at 300-plus percent quarter-over-quarter through early 2026, the company reached approximately $50 million in annualized revenue - the strongest traction signal in the AI voice agent category. The platform is built for teams that need programmatic control: a fully-featured REST API and webhooks let engineers embed voice agents inside any application, while pre-built agent templates and a visual editor give non-engineers a path to deployment without deep coding. Pricing is usage-based with no monthly minimums - you start with $10 in free credits and pay between $0.07 and $0.31 per minute depending on the voice and LLM combination chosen. This model is cost-effective for low-volume use cases and enterprise accounts with predictable volume, but the layered cost structure (Retell infrastructure at $0.055 per minute, TTS at $0.015 to $0.10 per minute, LLM at $0.0016 to $0.38 per minute) requires careful modeling before scaling. The platform supports up to 20 free concurrent calls with additional capacity at $8 per concurrent slot per month. Simulation testing built into the dashboard lets teams validate agent behavior before going live. The 90-day affiliate cookie and 15-percent recurring commission for 24 months makes it one of the stronger affiliate plays in the voice AI space for content creators. Enterprise contracts include custom MSA and DPA terms, dedicated servers, SSO, and role-based access controls.

Pros & Cons

Pros

  • ✓Category-leading traction: $50M ARR with 300-plus percent QoQ growth
  • ✓Pay-as-you-go with no minimums - $10 free credits to start
  • ✓Full REST API and webhooks for programmatic agent control
  • ✓Simulation testing built-in to validate agent behavior before launch
  • ✓20 free concurrent calls - scales to enterprise with per-slot add-ons
  • ✓Strong affiliate program: 15 percent recurring for 24 months, 90-day cookie

Cons

  • ✗Layered per-minute pricing becomes complex to model at scale
  • ✗No flat-rate plan - cost unpredictable for high-volume months
  • ✗Developer-focused: non-technical users face a steeper setup curve vs Dialora or Rosie
  • ✗Enterprise features (custom MSA, dedicated server, SSO) require custom contract
  • ✗Community and email support only on base tier - no dedicated CSM below Enterprise

Best Use Cases

  • →Building custom AI phone agents embedded inside SaaS products via API
  • →Enterprise inbound call center automation with concurrent call scaling
  • →High-volume outbound campaigns where per-minute economics are well-modeled
  • →Prototyping and testing voice AI workflows before production deployment
  • →Developer teams replacing legacy IVR systems with conversational AI agents

Categories

voice-aiautomationdeveloper-tools

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Pricing

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ProFrom $0 / mo

Pricing verified November 2026. Verify current pricing on the official site before purchase.

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Trust Stack

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Editorial Score

-/5

Editorial review pending

External Aggregate

4.5/5

1,250 aggregate ratings from G2, Capterra, Product Hunt

User Reviews on MytheAi

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Pricing Verified

November 2026

Re-verified against the official site every 90 days

Editorial score is independent of External Aggregate. User reviews appear separately below.

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Compared with Retell AI (2)

  • Retell AI vs Dialora →tie

    Dialora and Retell AI represent the two main architectural choices in AI voice agents: Dialora is a finished product optimised for non-technical users and agencies, while Retell AI is a developer-first platform for teams that need programmatic control. Dialora wins on deployment speed, cost predictability, and agency economics. Retell AI wins on API depth, enterprise scalability, and usage-based economics at high volume. The right choice comes down to who is building: a business owner or agency setting up a receptionist picks Dialora; a developer team embedding voice AI into an application picks Retell.

  • Retell AI vs Vapi →tie

    Retell AI and Vapi are the two dominant developer platforms for building AI voice agents in 2026. Both offer usage-based pricing, REST APIs, and no-minimum commitments. Retell differentiates with a visual editor that makes the platform accessible to non-engineers, pre-built agent templates, built-in simulation testing, and $50M in annualized revenue showing real production scale. Vapi differentiates with the largest developer community, more flexible SDK options across languages, and a free development plan with no credit requirement. Retell wins for teams that want both developer control and a usable UI. Vapi wins for pure developers who want maximum flexibility and free experimentation.

Use Retell AI for (5)

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Frequently Asked Questions

Is Retell AI free?▼

Retell AI offers a free tier with limited features. Paid plans start from $0/month.

What is Retell AI best for?▼

Retell AI is best suited for: Building custom AI phone agents embedded inside SaaS products via API, Enterprise inbound call center automation with concurrent call scaling, High-volume outbound campaigns where per-minute economics are well-modeled.

How does Retell AI compare to alternatives?▼

Retell AI holds a rating of 4.5/5 from 1,250 reviews. Browse our comparison pages to see detailed side-by-side breakdowns against similar tools.

MytheAi Team, editorial team at MytheAi

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MytheAi Team

Editorial Team

The MytheAi editorial team tracks and reviews AI and SaaS tools. We built MytheAi out of frustration with pay-to-rank listicles and SEO-driven directories that prioritize ad revenue over honest guidance. Hands-on testing across 590+ tools to date.

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Retell AI Review (2026): Is It Worth It?

Retell AI is a freemium tool with a free tier available. It holds a rating of 4.5/5 based on 1,250 reviews. Currently trending among users.

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