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.
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Vapi
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| Attribute | Retell AI Platform | AI Receptionist | AI Voice Agent | AI Voice Agents | careCycle Voice AI Platform | CodeGPT Voice AI Agents | ElevenAgents | Flair | Synthflow AI Voice Agents | Vapi Voice AI Platform | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Provider |  | | | | | | | | | | |
| Founded | 2023 | 1999 | 2011 | 2025 | 2024 | 2023 | 2022 | 2022 | 2023 | 2020 | |
| Sells To | B2B | Enterprise, Small Business | Enterprise | B2B | B2B | Enterprise, Small Business | B2B, B2C, Enterprises | Enterprise | — | — | |
| Pricing Model | Recurring | Recurring, SaaS | Recurring, Software, Usage-based | SaaS | B2B Subscription | Recurring, Usage-based | B2B Subscription, Recurring, Usage-based | Recurring, Software | — | Recurring | |
| Ownership | Venture Capital | Public | Equity, Venture Capital | Privately Held | Privately Held | Venture Capital | Private, Venture Capital | Venture Capital | — | Private |
Provider
Founded 2023
Sells To B2B
Pricing Model Recurring
Ownership Venture Capital
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 Capital
Provider
Founded 2025
Sells To B2B
Pricing Model SaaS
Ownership Privately Held
Provider
Founded 2024
Sells To B2B
Pricing Model B2B Subscription
Ownership Privately Held
CloudTalk AI Voice Agent
cloudtalk.io
