Retell AI

AI voice agents for your phone calls — no-code or API, 600ms latency, SOC 2 and HIPAA compliance included.

💰Starting at $0.07/min ★★★★½ 4.7/5 (88 opinion)

Assistants No-code & Automation

#Agents IA #API #Automatization workflows #Chatbots

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Overview of Retell AI

https://retellai.com

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Présentation détaillée

Retell AI is an __AI voice agent platform__ designed to automate inbound and outbound phone calls. Its agents respond in under __600ms__, support 31+ languages with native speech models, and handle complex multi-turn conversations. The platform offers a __no-code drag-and-drop builder__ for structured conversation flows, as well as __complete API access__ for developers. Each account gets 20 free simultaneous calls. Retell AI is __SOC 2 certified, HIPAA-compatible__ and supports SSO for enterprise environments. No platform fees — you only pay for what you use.

What is Retell AI?

Retell AI is an infrastructure platform for AI voice agents. It enables any organization to create, deploy, and manage agents capable of conducting complex phone conversations in real time. The platform supports both inbound calls (customer support, appointment scheduling) and outbound calls (prospecting, follow-ups, reminders).

Key Features

Retell AI stands out with its 600ms response latency, ensuring conversational fluency close to natural speech. The platform supports 31 languages with native speech models and automatic caller language detection. The no-code drag-and-drop builder lets you create structured conversation flows. The complete API gives developers full control over integration. Smart interruption logic lets the caller cut off the agent for corrections or questions.

Use Cases

Sales teams deploy Retell AI agents for outbound prospecting and lead follow-up. Healthcare companies use it to automate appointment scheduling in full HIPAA compliance. SaaS companies reduce customer support costs by handling level-1 requests with voice agents. E-commerce platforms automate order confirmations and shipment tracking.

Benefits

Retell AI lets you instantly scale phone capabilities without hiring or training staff. 24/7 availability improves customer experience. The usage-based model with no platform fees guarantees complete flexibility. SOC 2 and HIPAA certifications unlock deployments in the most demanding sectors.

Pricing

Retell AI operates on a usage-based pricing model with no subscription or fixed platform fees. The base cost is $0.07/min for the voice engine, plus LLM costs and telephony. Each new account receives $10 in free credits. Enterprise plans with negotiated rates are available for high volumes.

Conclusion

Retell AI is a mature and reliable platform for organizations looking to deploy AI voice agents at scale. Its 600ms latency, multilingual support, and compliance certifications make it a top choice for demanding sectors. The usage-based pricing model requires good volume anticipation, but the value proposition is clear.

✅ Strengths

600ms latency for smooth and natural real-time voice conversations.
Support for 31 languages with automatic detection and speaker adaptation.
No-code drag-and-drop builder and complete API access for all skill levels.
Certified SOC 2 and HIPAA-ready for regulated sectors (healthcare, finance).
$10 free credits on account creation, no mandatory subscription.

⚠️ Limits

The cost per minute can accumulate quickly for high-volume deployments.
The platform requires some technical expertise for advanced CRM integrations.
Available voices depend on third-party providers (ElevenLabs, OpenAI) and their pricing.
The ecosystem of predefined templates is less developed than some competitors.

👤 GOOD CHOICE?

Retell AI est-il fait pour vous ?

✓ Ideal if you…

✓ Équipes commerciales souhaitant automatiser la prospection et le suivi clients par téléphone.
✓ Entreprises de santé nécessitant des agents HIPAA-compliant pour la prise de RDV.
✓ Développeurs intégrant des capacités vocales IA dans leurs applications via API.
✓ PME et SaaS cherchant à automatiser leur support client téléphonique sans équipe dédiée.

✗ To avoid if you…

✗ Petites structures avec peu d’appels et un budget limité — le coût à la minute peut être prohibitif.
✗ Cas d’usage purement textuels — Retell AI est spécifiquement conçu pour la voix.
✗ Équipes sans développeur pour les intégrations complexes avec des systèmes tiers.
✗ Projets nécessitant un contrôle total sur l’infrastructure téléphonique sous-jacente.

🎯 Our verdict

Retell AI has established itself as one of the key references in the AI voice agent market. Its combination of ultra-low latency (600ms), native multilingual support (31 languages), and a no-platform-fee architecture clearly sets it apart from competition. The dual no-code and API approach appeals to both business teams and developers. SOC 2 certification and HIPAA compatibility open doors to the most regulated sectors. The usage-based pricing model is transparent but can surprise on large volumes — you should anticipate costs before deployment. Overall, Retell AI is a solid choice for any organization wanting to deploy reliable, scalable, and compliant AI voice agents.

❓ FREQUENT QUESTIONS

FAQ — Retell AI

What is the real cost of using Retell AI?

The total cost combines the voice engine ($0.07–$0.08/min), LLM costs ($0.006–$0.06/min depending on the model), and telephony ($0.015/min). Most practical configurations cost between $0.13 and $0.31/min.

Is Retell AI HIPAA-compliant?

Yes, Retell AI is SOC 2 certified and HIPAA-compatible, with custom compliance terms available for enterprise contracts. It is suitable for healthcare deployments.

Can I use Retell AI without coding?

Yes, Retell AI offers a no-code visual builder for creating structured conversation flows. Complete API access is also available for developers.

How many simultaneous calls can Retell AI handle?

Each account gets 20 free simultaneous calls. Additional calls can be added at $8/concurrent call/month, with enterprise terms for high volumes.

What voice models are available on Retell AI?

Retell AI integrates with multiple voice providers including ElevenLabs and OpenAI Voice. Costs vary by provider, from $0.07–$0.08/min for the voice engine.

★★★★½ 4.7/5 (88 avis)

✅ Verified by Comparateur-IA

Assistants No-code & Automation

AI voice agents for your phone calls — no-code or API, 600ms latency, SOC 2 and HIPAA compliance included.

💰 Rate Starting at $0.07/min

🆓 Free trial Yes

🌐 Languages 🇬🇧 English

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