Enterprise AI voice platform for deploying human-like inbound and outbound voice agents at scale.
Retell AI is an enterprise-grade voice agent platform that helps businesses build, test, and deploy production-ready AI voice agents for both inbound and outbound calls. The platform delivers approximately 600ms response latency, supports 31+ languages, and offers features including warm transfers, batch dialing, IVR navigation, and custom LLM integration.
Retell's architecture integrates best-in-class commercial LLMs with a proprietary real-time conversational AI model layer that orchestrates speech-to-text and text-to-speech in real time. The platform supports BYOC telephony integration, Salesforce and HubSpot CRM connections, and enterprise-grade security with HIPAA, SOC 2 Type II, and GDPR certifications.
RingCentral
AI Receptionist
ringcentral.com
Dialpad
AI Voice Agent
dialpad.com
Lupitor
AI Voice Agents
lupitor.com
careCycle
careCycle Voice AI Platform
carecycle.ai
CodeGPT
CodeGPT Voice AI Agents
codegpt.co
ElevenLabs
ElevenAgents
elevenlabs.io
Flair Labs
Flair
flairlabs.ai
Cartesia
Managed Agents
cartesia.ai
Synthflow
Synthflow AI Voice Agents
synthflow.ai
Telnyx
Telnyx — Voice AI Agents
telnyx.com
Vapi
Vapi Voice AI Platform
vapi.ai
| Attribute | Retell AI Platform | AI Receptionist | AI Voice Agent | AI Voice Agents | careCycle Voice AI Platform | CodeGPT Voice AI Agents | ElevenAgents | Flair | Managed Agents | Synthflow AI Voice Agents | Telnyx — Voice AI Agents | Vapi Voice AI Platform | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Provider |  | | | | | | | | | | | | |
| Founded | 2023 | 1999 | 2011 | 2025 | 2024 | 2023 | 2022 | 2022 | 2023 | 2023 | 2009 | 2020 | |
| Sells To | B2B | Enterprise, Small Business | Enterprise | B2B | B2B | Enterprise, Small Business | B2B, B2C, Enterprises | Enterprise | Enterprises | — | Enterprise, Small Business | — | |
| Pricing Model | Recurring | Recurring, SaaS | Recurring, Software, Usage-based | SaaS | B2B Subscription | Recurring, Usage-based | B2B Subscription, Recurring, Usage-based | Recurring, Software | Recurring, Software | — | Recurring, Software, Usage-based | Recurring | |
| Ownership | Venture-backed | Public | Equity, Venture-backed | Private | Private | Venture-backed | Private, Venture-backed | Venture-backed | Private | Venture-backed | Equity, Venture-backed | Private |
Provider
Founded 2023
Sells To B2B
Pricing Model Recurring
Ownership Venture-backed
Provider
Founded 1999
Sells To Enterprise, Small Business
Pricing Model Recurring, SaaS
Ownership Public
Provider
Founded 2011
Sells To Enterprise
Pricing Model Recurring, Software, Usage-based
Ownership Equity, Venture-backed
Provider
Founded 2025
Sells To B2B
Pricing Model SaaS
Ownership Private
Provider
Founded 2024
Sells To B2B
Pricing Model B2B Subscription
Ownership Private
Developer platform providing real-time and batch APIs for speech-to-text, text-to-speech, and voice agents.
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