Vapi vs Retell AI: Features, Pricing and User Reviews 2026

Vapi has two plans built around how much you need to scale. The Build plan is usage based, so you only pay for what you use, with 60+ minutes of calls and 10 concurrent calls included.

• Voice Calls: $0.05 per minute

• SMS or Chat: $0.0005 per message

• Extra Concurrency: $10 per line per month

• Model Provider Costs: Charged at cost, or $0 if you bring your own API key

• Add-ons: HIPAA compliance at $2,000/month and zero data retention at $1,000/month

The Scale plan is an annual contract for larger teams, with a fixed platform fee, committed call volume, and enterprise features like SSO, SOC 2, and dedicated support. Pricing is custom, so you will need to contact Vapi's sales team directly.

Retell AI uses a pay as you go pricing model, so you only pay for what you use, with $10 in free credits to get started and no upfront commitment.

• Voice Agents: Priced at roughly $0.07 to $0.31 per minute, based on the LLM, voice, and telephony you choose.

• Chat Agents: Priced from about $0.002 per AI message, depending on the model used.

• Included Extras: 20 free concurrent calls, 10 free knowledge bases, call analytics, simulation testing, webhooks, and API access.

• Add-ons: Extra concurrency, knowledge bases, phone numbers, SMS, and quality features like PII redaction cost a small amount more per minute or per month.

For larger organizations, the Enterprise plan offers custom pricing with dedicated servers, single sign on, custom contracts, and 24/7 support.