Retell AI
Voice AI agent platform for deploying phone-call automation agents for support and sales.
- Free credit
- $10
- Card required
- No
Retell AI scores 5.1/10 for free value in Agents. The main constraint: $10 one-time signup credits (~67-90 min of voice at typical $0.11-0.15/min all-in rates, fewer at higher tiers). Includes full platform access, 20 free concurrent calls, and 10 free knowledge bases — but these only matter while credits last. No recurring free quota.
Free value score
5.1 / 10Show the math
Key metrics
What you get
$10 one-time signup credits (~67-90 min of voice at typical $0.11-0.15/min all-in rates, fewer at higher tiers). Includes full platform access, 20 free concurrent calls, and 10 free knowledge bases — but these only matter while credits last. No recurring free quota.
Phone-call automation agents
Gotchas
- One-time credits
$10 one-time signup credits (~67-90 min of voice at typical $0.11-0.15/min all-in rates, fewer at higher tiers). Includes full platform access, 20 free concurrent calls, and 10 fre
Sources
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"Go live in minutes with $10 in free credits. Full platform access, no commitments. Just build, test, and pay as you scale."
https://www.retellai.com/pricing -
"Every account includes 20 concurrent calls for free. Need more? Additional capacity is $8 per concurrent call per month."
https://www.retellai.com/pricing -
"Knowledge Base | $8.00/Knowledge Base/month | Free for first 10 knowledge bases"
https://www.retellai.com/pricing -
"API rate limits (Retell supports 100 requests every 10 seconds), compliance requirements (HIPAA, SOC2), and potential overage fees."
https://www.retellai.com/resources/outbound-ai-caller-cost-breakdown -
"Despite launching in February 2024, Retell has already reached profitability and is experiencing what it says is rapid growth. The company raised $4.6 million in seed funding in August 2024, led by Alt Capital and Y Combinator."
https://siliconangle.com/2025/12/17/retell-ai-targets-human-bottlenecks-agentic-voice-ai-automated-qa/
