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Retell AI
Developer voice-AI platform — pay per minute, no monthly minimum, you build the agent.
Tech-forward agents or teams with a developer who want a custom voice agent at usage prices.
No subscription floor — low-volume agents pay only for minutes used
Not turnkey — someone has to design, test, and maintain the call flows
What it does
- ~600ms response latency (vendor claim)
- Real-time function calling mid-call: calendar booking, CRM writes, data lookups
- Choose the LLM per agent — GPT and Claude models priced on the rate card
- SIP trunking to any phone system; Twilio and Vonage integrations
- Batch outbound campaigns with scheduling, pacing, and retries
- Knowledge base add-on for listing and FAQ content
- Integrations with GoHighLevel, HubSpot, Make, and n8n
- Billed to the second; failed connections not billed
- Vendor states SOC 2 Type II, HIPAA, GDPR, and ISO 27001 compliance; BAA on enterprise
Pros and cons
Pros
- No subscription floor — low-volume agents pay only for minutes used
- Full control of script, model, voice, and integrations
- Strong compliance posture for a usage-priced tool
- Scales from one agent to a full team without switching vendors
Cons
- Not turnkey — someone has to design, test, and maintain the call flows
- Rate depends on model and voice; premium voices and fast LLM tiers can triple the headline price
- Silence and hold time are billed
- No real estate templates, and no real estate CRMs among its named integrations
Pricing details
Pay as you go, no platform fee. A typical minute = $0.055 voice infrastructure + LLM ($0.0016–$0.32 by model) + voice ($0.015–$0.10) + $0.015 US telephony. Numbers $2/mo. 20 concurrent calls included, $8/mo per extra. $10 free credit. Knowledge base, denoising, and PII removal add $0.005–$0.01/min. Verified Oct 2026.
Every figure on this page was checked against retellai.com or the source named above on Oct 18, 2026. Prices change — confirm with the vendor before you buy. Our methodology
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