Retell AI
Voice AI — Speech, Synthesis & Conversation
Last updated · Compiled from public sources with automated enrichment
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Voice AI platform for building conversational phone agents.
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- Category
- Voice AI — Speech, Synthesis & Conversation
- Founded
- —
- Status
- Active
- Open source
- No
- Pricing
- Paid
- Funding stage
- Seed
- Total raised
- —
- Popularity
- Rising
- Modality
- Audio
- GitHub stars
- —
Relationships
3 of 9 confirmed by two independent sources, 6 under review · 7 backed by a published source.
- Bland AIBland AI competes with Retell AI.
- DeepgramRetell AI competes with Deepgram.
- PlayAIPlayAI competes with Retell AI in conversational agents.
- Resemble AIResemble AI competes with Retell AI in conversational agents.
- RespeecherRetell AI competes with Respeecher.
- VapiRetell AI competes with Vapi.
- WellSaid LabsRetell AI competes with WellSaid Labs.
- CartesiaRetell AI uses Cartesia for voice-agent text-to-speech.
- SpeechmaticsRetell AI uses Speechmatics for speech recognition in phone agents.
References
Published sources supporting the relationships above.
- Retell AI vs Resemble AI (2026): Honest Comparison
unknown publisher · supports Resemble AI competes with Retell AI
- Top Voice AI Agents for 2026: The Ultimate Buyer’s Guide
unknown publisher · supports Retell AI competes with Deepgram
- Deepgram vs Retell AI (2026 Comparison)
unknown publisher · supports Retell AI competes with Deepgram
- Vapi vs Retell AI vs Deepgram vs ElevenLabs (2026 Comparison) | Callnovo
unknown publisher · supports Retell AI competes with Deepgram
- Deepgram vs Retell AI: Pricing, Demos, and Features Compared | Morak
unknown publisher · supports Retell AI competes with Deepgram
- Best AI Voice APIs for Developers in 2026 (Ranked)
unknown publisher · supports Retell AI competes with Deepgram
- Speechmatics STT Testing & AI Agent QA | Cekura
unknown publisher · supports Retell AI uses Speechmatics
- 10 Best Bland AI Alternatives for 2026 | Reviewed & Compared | Lindy
unknown publisher · supports Bland AI competes with Retell AI
- Best Bland AI Alternatives in 2026 (Ranked & Compared) | Retell AI | Retell AI
unknown publisher · supports Bland AI competes with Retell AI
- Bland vs. Retell vs. JustCall: A Closer Look at AI Voice Platforms | Bland AI
unknown publisher · supports Bland AI competes with Retell AI
- PlayAI vs. Retell AI Comparison
unknown publisher · supports PlayAI competes with Retell AI
- PlayAI Alternatives 2026: Where Agencies Are Migrating After the Meta Acquisition | Trillet Blog
unknown publisher · supports PlayAI competes with Retell AI
- Retell AI vs Vapi (2026): Which Wins? | Famulor Blog
unknown publisher · supports Retell AI competes with Vapi
- Vapi vs Retell: Find the Best Alternative for AI Phone Agents
unknown publisher · supports Retell AI competes with Vapi
- Retell AI vs VAPI: Which Voice Agent Platform Should You Actually Build On? - DEV Community
unknown publisher · supports Retell AI competes with Vapi
- Cartesia | How Cartesia Powers Retell's Voice Agents at Scale
unknown publisher · supports Retell AI uses Cartesia
- Platform Changelogs | Retell AI
unknown publisher · supports Retell AI uses Cartesia
- Cartesia vs Retell AI (2026 Comparison)
unknown publisher · supports Retell AI uses Cartesia
- Cartesia Powers Next Gen Voice Agents for Retell AI | Cartesia posted on the topic | LinkedIn
unknown publisher · supports Retell AI uses Cartesia
- Day 5 Cartesia Voice | Retell | 14 comments
unknown publisher · supports Retell AI uses Cartesia
News
- Retell AI lets companies build ‘voice agents’ to answer phone calls - TechCrunchTechCrunch · 5/9/2024
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- Bland AIPlatform for building automated AI phone-call agents.
- CartesiaReal-time generative voice AI platform built on state-space models.
- DeepgramSpeech-to-text API platform focused on speed and accuracy.
- DescriptAudio/video editor with AI voice cloning (Overdub) and transcription.
- ElevenLabsLeading text-to-speech and voice-cloning AI platform.
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- LOVO AIAI voiceover and synthetic voice generation platform.
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- Neets.aiLow-cost text-to-speech API platform.
- Play.htText-to-speech platform offering realistic AI voice generation.
- PlayAIConversational voice AI agent platform (from the Play.ht team).