Retell AI
Platform for building, testing, and deploying AI phone agents, with pay as you go per minute pricing and modular LLM/voice choices.
Best for Builders and agencies deploying custom phone agents
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What it does
Retell AI is a platform for building, testing, and deploying conversational AI voice agents for phone calls. Users provide conversation flows, integrations, and configurations using preferred language models and voices to produce automated inbound and outbound phone calls. It is designed for businesses and contact centers that need to automate high volume phone operations and customer support.
Read more: 6 features and how people use themShow less
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Visual call flow builder
Enables users to map conversation flows on a drag and drop visual canvas. It incorporates functions, external integrations, DTMF, text messaging, and custom logic to manage multi step workflows.
Use caseA call center designer builds a multi step customer service workflow that routes inquiries, accepts keypad inputs, and triggers follow up text messages.
From retellai.com · image from Retell AI -
Outbound campaign dialer
Executes high volume outbound call campaigns without requiring separate dialing software. It schedules calls, controls retries and pacing, and detects voicemail automatically.
Use caseA sales lead runs an outbound outreach campaign by uploading audience lists and letting AI agents place calls at scale to qualify prospects.
From retellai.com -
Call transfer options
Switches callers over to human agents through cold, warm, or agentic transfers. It can deliver contextual summaries and briefings to the human representative before transferring the live line.
Use caseA customer service specialist receives an escalated caller along with an automated briefing of the conversation so the customer does not have to repeat details.
From retellai.com · image from Retell AI -
AI quality assurance
Reviews and evaluates recorded calls across full conversational volume to measure agent performance. It identifies conversation trends and highlights specific areas for team improvements.
Use caseA call center manager reviews call performance across entire call volumes to find recurring failures and improve automated agent scripts.
From retellai.com -
Simulation testing
Tests conversation changes before deployment by running simulated customer interactions. It catches errors, identifies edge cases, and converts actual production calls into regression test suites.
Use caseAn engineer tests logic updates against thousands of simulated edge cases to prevent failed transfers before releasing changes to callers.
From retellai.com · image from Retell AI -
Phone system navigation
Interacts with interactive voice response systems during live calls. It reads menu prompts, dials keypad extension numbers, and navigates automated phone directories to reach target destinations.
Use caseAn outbound voice agent dials into an office phone tree, identifies the correct interactive menu option, presses extension digits, and connects with the appropriate desk.
From retellai.com
Written from Retell AI's own website, checked . Each feature links to the page it comes from; images are Retell AI's own.
Every plan
| Plan | Monthly | Billed yearly | Per | What it includes |
|---|---|---|---|---|
| Pay as you go | Free | Not listed | per minute | $0.07-$0.31/min voice ($0.055 infra + LLM + TTS + $0.015 telephony); $10 free credits; 20 concurrent calls; $2/mo per number |
| Enterprise | Not listed | Not listed | per account | contact sales; 50+ concurrency, HIPAA BAA, SOC 2, SSO |
From Retell AI's own pricing page, checked . Prices are in US dollars per month; "billed yearly" is the monthly price when you pay for a year up front.
Before you pay
- Data retention
- Enterprise plans include custom data retention, while pay as you go does not.
- HIPAA
- Yes
- SOC 2
- Yes
- GDPR
- Yes
- Support
- Email, community, 24/7 support with dedicated portal
Only what Retell AI's own pages state, with the quote behind each answer. Anything they don't publish is left out rather than guessed.
Retell AI video tutorials
Independent creators on YouTube, not Retell AI or us. The video loads from YouTube only when you press play.
What the free plan includes
$10 free credits on pay as you go; 20 concurrent calls included
Questions people ask about Retell AI
Is Retell AI free?
Yes, there is a free plan: $10 free credits on pay as you go; 20 concurrent calls included.
Is Retell AI HIPAA compliant?
Yes. Source
Does Retell AI have an API?
Yes.
What is an AI voice agent?
An AI voice agent is an autonomous system that can listen, speak, and hold natural phone conversations like a human, using speech recognition, LLMs, and TTS. Source
Which is the best AI voice agent?
The best AI voice agent depends on workflow accuracy, latency, logic control, and testing on your traffic; Retell AI scored 95.7% accuracy in an independent benchmark. Source
How much do AI voice agents cost?
Voice agents cost $0.07 to $0.31 per minute depending on models, voice, and add ons with no annual contract, while chat agents start at $0.002 per message. Source
Works with
- Integrations
- Twilio, GoHighLevel, HubSpot, Zapier, Zoho CRM, Google Workspace, Make, Salesforce, n8n, Calendly
- AI models
- GPT, Claude, Gemini, Custom LLM
Where this came from
Plans, prices and limits were copied from Retell AI's own pages and the other sources listed, then checked .
- retellai.com/pricing
- retellai.com/integrations
- retellai.com/
- retellai.com/enterprise-plan
- retellai.com/integrations/twilio
- retellai.com/integrations/n8n
- retellai.com/integrations/go-high-level
- retellai.com/integrations/cal-com
- retellai.com/integrations/vonage
How we collect prices and rank tools · Is something wrong? Correct this listing
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