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Retell AI vs Voiceflow

Retell AIVoiceflow

Bottom line: Retell AI for developers building custom voice agent products; Voiceflow for teams designing agents collaboratively.

Retell AIRetell AI

Build, test, and deploy production-grade AI voice agents that handle inbound and outbound phone calls.

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VoiceflowVoiceflow

A collaborative platform to design, build and ship AI agents.

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Votes01Best
PricingPaidFreemium
CategoryVoice AgentsCustomer Support
Tags
voice-agentcall-automationvoice-ai
ai-agentsconversational-aivoice-aicustomer-support
Best for
  • Developers building custom voice agent products
  • Startups automating support or sales calls
  • Agencies deploying voice agents for clients
  • Teams designing agents collaboratively
  • Companies needing both chat and voice
  • Product and design-led agent projects
Pros
  • Transparent per-minute, pay-as-you-go pricing with no platform fee
  • Full feature access from day one, nothing locked behind higher tiers
  • Strong developer tooling: API, testing/simulation suite, webhooks, functions
  • Wide model and voice choice (GPT, Claude, ElevenLabs, Retell voices)
  • Extensive integration directory including Twilio, CRMs, and calendars
  • Strong visual, collaborative design canvas
  • Supports multiple LLM models
  • Handles both chat and voice
  • Good analytics and testing tools
  • Free tier for getting started
Cons
  • Headline $0.07/min rate is misleading; real costs run $0.13-$0.31/min
  • Costs stack across LLM, TTS, and telephony, making budgeting complex
  • Enterprise plan is expensive, starting around $8,000
  • Steeper learning curve for non-developers building advanced flows
  • No permanent free plan, only $10 in starter credits
  • Editor seats plus credits can get expensive
  • Usage-based credits require careful cost modeling
  • Learning curve for complex flows
  • No self-hosting option
  • Voice and premium features push credit consumption

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