12 alternatives to Retell AI in Voice AI — Speech, Synthesis & Conversation. 7 of them are tracked direct competitors.
| Company | Pricing | Open source | Funding |
|---|---|---|---|
| Retell AIthis pageVoice AI platform for building conversational phone agents. | Paid | No | Seed |
| Bland AIdirect competitorPlatform for building automated AI phone-call agents. | Paid | No | Seed |
| Deepgramdirect competitorSpeech-to-text API platform focused on speed and accuracy. | Paid | No | Series C |
| PlayAIdirect competitorConversational voice AI agent platform (from the Play.ht team). | Paid | No | Unknown |
| Resemble AIdirect competitorVoice cloning and generative audio platform. | Paid | No | Series A |
| Respeecherdirect competitorVoice conversion technology used for film, games, and media. | Enterprise | No | Seed |
| Vapidirect competitorDeveloper platform for building voice AI agents. | Freemium | No | Seed |
| WellSaid Labsdirect competitorEnterprise-grade text-to-speech voice platform. | Enterprise | No | Unknown |
| AssemblyAISpeech-to-text and audio intelligence API platform. | Freemium | No | Series C |
| CartesiaReal-time generative voice AI platform built on state-space models. | Paid | No | Seed |
| DescriptAudio/video editor with AI voice cloning (Overdub) and transcription. | Freemium | No | Series D+ |
| ElevenLabsLeading text-to-speech and voice-cloning AI platform. | Freemium | No | Series B |
| Hume AIAI platform focused on emotional expression in voice and language. | Freemium | No | Series B |
Direct competitors are curated relationships in the index. The remaining entries share the Voice AI — Speech, Synthesis & Conversation category.