Tools
Retell AI vs Vapi
Retell AI or Vapi? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.
In inglese
In short
- Both: Choice of models, API, Builds agents and workflows, Traces and evaluates
- Only Retell AI states: Self-hosted, Search over your data
- Only Vapi states: No code retained, Official SDKs
Retell AI
Retell AI builds voice, chat, and SMS agents that answer questions, complete tasks, route calls, and hand off to people.
Plans
Pay as you go
- $0.07-$0.31 / min
- $0.002+ / msg
- Full platform access
- Pre-built Agent Templates
- Call Analytics and Transcripts
- Simulation Testing
- Webhooks and API Access
- 20 Free Concurrent Calls
Enterprise Plan
Price on request
- Dedicated Implementation Support (add-on)
- Custom MSA/DPA terms
- Role-based Access Control
- Dedicated Stable Server (add-on)
- Custom SSO
- High Cap on Concurrent Calls
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Choice of models — “Choose your options LLM GPT 5.5 GPT 5.4 GPT 5.2” source
- Self-hosted — “Deploy Retell within your own infrastructure to meet strict security and data residency requirements.” source
- API — “Build and orchestrate custom communication experiences through a flexible API.” source
- Builds agents and workflows — “Build, update, test, and deploy AI voice agents without relying on Retell for every change.” source
- Search over your data — “AI uses existing knowledge” source
- Traces and evaluates — “Every call is transcribed and available for review, so you evaluate 100 percent of interactions instead of a manual sample.” source
Security
- SOC 2 Type II — “SOC 2 Type 2 Report” source
- SOC 2 — “SOC 2 Type 1 Report” source
- ISO 27001 — “ISO 27001:2022 Certificate Of Registration” source
- GDPR — “GDPR commitments” source
- HIPAA — “To obtain a signed Business Associate Agreement (BAA) or Data Processing Agreement (DPA), visit our Legal agreements portal:” source
Latest updates
- Retell Workflows, Brex top 25, and more
Retell Workflows has launched; transcription defaults to call IDs; GPT-5.6 and GPT Realtime 2.1 are live in the agent builder.
- Conductor, higher free-tier token limits, and more
Conductor is live; every change gets simulated before it ships; free LLM token allowance raised to 4,000; documents parse more accurately.
- Live Call Monitoring, Custom Dashboards, Built-in CRM, Colloquial Model, Expressive Mode, and more
Built-in CRM syncs with Salesforce and HubSpot; Live Call Monitoring gives a real-time view of active conversations.
Vapi
Vapi is a developer platform for building voice AI agents that make and receive phone calls and connect to APIs.
Plans
No Success Package
- $0.05/min Vapi hosting
- $5 free credits to get you started
- 2 organizations
- 1 included Vapi phone number
- 4 concurrent calls
- 14 days raw data retention
- Full platform access
Core
- $29 / month
- 2 organizations
- 5 included Vapi phone numbers
- 10 concurrent calls
- 30 days raw data retention
- ZDR included
- 2 business day response SLA
Pro
- $999/mo minimum
- 10 organizations
- 10 included Vapi phone numbers
- 30 concurrent calls
- 180 days raw data retention
- RBAC + ZDR
- 99% uptime SLA
Premier
Price on request
- Elevated orgs, concurrency, and data retention
- Custom number of Vapi phone numbers
- Priority support
- Named support team with Agent Strategist, FDE Advisor, and onboarding support
- 1 hour for P0 response SLA
- Custom RBAC + ZDR + SSO
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Choice of models — “Bring your own model, or choose from our managed list of 200+ models and integrations.” source
- No code retained — “ZDR included” source
- API — “Every capability is accessible via REST API.” source
- Official SDKs — “Client SDK” source
- Builds agents and workflows — “Chain agents or use squads for complex workflows with intelligent handoffs and routing.” source
- Traces and evaluates — “Catch hallucinations before they go live with evals and observability stack support.” source
Security
- SOC 2 Type II — “The full SOC 2 Type II report is available in our Trust Center under NDA.” source
- SOC 2 — “The full SOC 2 Type II report is available in our Trust Center under NDA.” source
- GDPR — “Compliance CCPA GDPR HIPAA SOC 2 PCI DSS v4.0.1 SOC 3” source
- HIPAA — “COMPLIANCE HIPAA” source
- Data kept in the EU — “Soniox is available for customers using our US and EU deployments and may also be used by customers who have enabled the HIPAA mode.” source
Latest updates
- What's New: Week of September 21, 2026
Set serviceTier to fast to request OpenAI’s faster processing tier; call logs include provider request IDs for BYOK models.
- What's New: Week of September 14, 2026
Set a same-provider fallback model for Anthropic Bedrock; Composer can create and run simulations.
- What's New: Week of September 7, 2026
Chat runs your current unsaved configuration; duplicate a simulation suite; receive an email the day before a model is retired.