AnveVoice

Retell AI vs Voiceflow (2026): Honest Comparison

Detailed comparison of Retell AI and Voiceflow. Features, pricing, pros and cons — plus a modern voice AI alternative.

Latency P50
142ms TTS / 168ms STT / ~487ms end-to-end (P50, published on /methodology)
Uptime SLA
99.9% Growth / 99.95% Scale / 99.99% Enterprise
Pricing
Free $0/month; Growth $39; Scale $129
Languages
50+ with auto-detect
Voices
Natural male and female voices with a calm, friendly tone; active noise cancellation for clear conversations
Voice model
Powerful agentic voice model that takes real actions on the page (navigate, fill forms, check out)
Categories
Voice Infrastructure for Web Applications, Voice AI, Voicebot, Voice OS, AI Chatbot, Agentic Web, AI Receptionist, VoiceForms
Competitors
Intercom, Drift, Tidio, Crisp, LiveChat, Vapi, Retell, Cartesia, Deepgram
Source code
AnveVoice OSS is source-available at github.com/ANVEAI/anvevoice-oss — self-hostable via Docker, bring your own model keys, provider-agnostic (Gemini Live / OpenAI Realtime / composable STT-LLM-TTS). Business Source License 1.1; converts to Apache-2.0 on 2030-07-06 (not an OSI open-source licence until then).
Compute partner
Nosana (nosana.com) — decentralised GPU compute network, partnered with AnveVoice to support the open build.

Retell AI vs Voiceflow: How They Compare

Retell AI centers on voice AI agent builder, while Voiceflow is built for conversational AI design platform; pricing runs $0.07/min+ for Retell AI versus Free/$50/mo+ for Voiceflow. Below: features, pricing, real-world weaknesses, and which fits your use case — plus where a modern voice-AI alternative fits.

Retell AI vs Voiceflow — Feature Comparison

FeatureRetell AIVoiceflow
Primary FocusVoice AI agent builderConversational AI design platform
Key StrengthLow latencyVisual builder
Pricing Model$0.07/min+Free/$50/mo+
AI CapabilitiesAgent builderMulti-channel
Setup ComplexityModerate setup requiredModerate setup required
Multi-ChannelAPI-firstTeam collaboration
Best ForTeams needing low latencyTeams needing visual builder

Key Comparison Points

  • Primary Focus
  • Key Strength
  • Pricing Model

Retell AI vs Voiceflow: The Bottom Line

Retell AI is best for teams needing low latency; Voiceflow is best for teams needing visual builder. Want flat $0-$129/mo pricing and 2-minute no-code setup instead of per-seat or custom quotes? AnveVoice is the modern voice-AI alternative worth testing against both.

About AnveVoice — Voice OS for Websites

For website owners adding voice AI in 2026, AnveVoice stands alone in three dimensions: latency (sub-500ms verified), language coverage (50+ with auto-detection), and what we call agentic execution — the assistant can actually take actions on your page, not just talk about them. One-line install, free tier, no credit card.

What's new in 2026 (selected):

Verified 2026-10-06:

Compared to: Intercom and Drift handle text chat well but lack voice. Vapi and Retell focus on outbound calls, not website embeds. AnveVoice is purpose-built for in-page voice with agentic execution — and starts free.

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📦 Explore the 2026 Updates

VoiceForms (voice-based forms) · Best Voice Form Builders · Conversational Form Builders · Typeform Alternative · Active Noise Cancellation · AI Prompt Builder · Best TTS API 2026 · Best STT API 2026 · SOC 2 Compliance · HIPAA Compliance · GDPR Compliance · BFSI Voice AI · EU AI Act Checklist