- vendor
- Retell AI
- whatItIs
- Developer-first voice AI platform for building and deploying AI phone agents; orchestrates best-in-class LLMs (GPT, Claude, Gemini) with pluggable TTS providers at ~600ms latency.
- hosting
- both
- pricingModel
- $0.055/min infra + $0.015/min TTS + LLM cost + $0.015/min telephony (~$0.07–0.31/min total)
- modelProviders
- multi-model (GPT-5.5/5.4/5.1, Claude 4.6/4.5, Gemini 3.0/2.5) + TTS: Retell, ElevenLabs, Cartesia, OpenAI, Minimax, Fish
- stateModel
- conversation sessions
- toolModel
- 25+ integrations (CRM, scheduling, telephony via Twilio/SIP)
- includesBrowser
- false
- includesMemory
- false
- longRunning
- long calls
- hitlSupport
- true
- observability
- call analytics + webhook events + monitoring dashboard
- maturity
- ga
- notes
- Orchestration-layer architecture (best-in-class at each layer) vs. ElevenLabs (proprietary stack) and Deepgram (STT-first). Enterprise self-hosted option available.
- launched
- 2024-02-21
