Retell AI vs telli

Side-by-side comparison of Retell AI and telli: pricing, features, API access, and community ratings.

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Retell AI
Retell AI

#1 AI Voice Agent Platform for Automating Phone Calls

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telli
telli

Every customer call, handled by AI.

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Category
Voice & speech
Voice & speech
Pricing
Freemium
Enterprise
Starting price
Free tier
Audience
All audiences
All audiences
API available
Open source
Self-hostable
Model provider
Multiple (OpenAI GPT, Anthropic Claude, Google Gemini, Custom LLM)
Model agnostic (multiple providers)
Founded
Headquarters
Germany
Key strengths
  • ·Low-latency (~600ms) voice AI orchestration
  • ·High workflow accuracy (95.7% in independent benchmark)
  • ·No annual contract, pay-as-you-go pricing
  • ·Enterprise-grade security: HIPAA, SOC2 Type II, GDPR, ISO 27001
  • ·AI voice agents for inbound and outbound calls
  • ·No-code agent builder (telli Studio)
  • ·Multi-lingual support in 20+ languages
  • ·Model agnostic architecture