Best for
Best for custom cloned voices in apps, games and interactive experiences where trust tools matter.
- Small and mid-sized
- Enterprise
AI Voice & Speech Comparison
Resemble AI vs. Retell AI
At a glance
At a glance
Best for
Best for teams putting AI voice agents on real phone lines and testing them before they meet customers.
- Small and mid-sized
- Enterprise
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | Resemble AI | Retell AI |
|---|---|---|
| Starting price | Free tier (Flex, pay as you go); detection plans from $280 / month The published plans cover deepfake detection, watermarking, identity and meetings, plus platform and API access. Flex has no subscription fee and is billed from prepaid credits. Team is $350 / month billed monthly, or $280 billed annually, and carries 5 seats; Business is $1,000 / month, or $800 billed annually, with 20 seats. Generative speech, voice cloning and speech-to-speech are quoted separately. | lower value From $0.07 / minute of calls Pay as you go, quoted by the vendor as $0.07 to $0.31 per minute for voice agents depending on the models, telephony and add-ons chosen, plus from $0.002 per message for chat agents. Enterprise is quoted by sales. |
| Free trial | Not stated | $10 in free credits, no contract and no commitment; 20 concurrent calls are included |
| Commercial use | Paid | Yes, usage-based |
| Output | Voice cloning, speech-to-speech, Voice Design from prompts, real-time | Voice agents for inbound and outbound phone calls and web calls, plus chat agents over SMS and a web widget |
| API | Yes | Yes, REST API with Node.js and Python libraries, webhooks and an MCP server |
| Languages | 100 languages and regional dialects on the managed platform, voice cloning in 23 | 57 languages listed for text-to-speech and 55 for speech recognition, each with the providers that cover it |
| Hosting | Cloud, with containerised on-premise and air-gapped installs via Docker and Kubernetes | Cloud on AWS; the vendor states it does not currently operate services within the European Union |
| Voice cloning | Yes, professional cloning with consent verification | Yes, custom voices can be added by searching ElevenLabs community voices, importing an existing clone or training one from uploaded recordings, with Inworld, Cartesia, MiniMax, ElevenLabs and Retell's own platform clones as providers; up to 100 custom voices per account |
| Real-time use | Yes | Yes, live inbound and outbound phone calls and browser web calls, with a proprietary turn-taking model, batch calling for campaigns and live monitoring that lets a human listen in or step in |
| Speech-to-speech and dubbing | Yes, converts a recording into another voice while keeping pacing, emphasis and inflection, with streaming on all model versions | A call runs as spoken conversation by chaining speech recognition, a language model and text-to-speech; dubbing of existing recordings is not part of the product |
| Editing and controls | Voice Design from prompts | Single and multi-prompt agents or node-based conversation flows, knowledge bases, expressive mode for emotion and emphasis, custom pronunciation with IPA, CMU, Pinyin or Jyutping, denoising and interruption sensitivity, voicemail and IVR handling, plus a playground, simulation tests, A/B testing and post-call analysis |
| Consent and trust | Consent verification, plus deepfake-detection tools | HIPAA compliant, SOC 2 Type 1 and Type 2 certified and GDPR compliant, with a BAA and a DPA including EU standard contractual clauses available for self-signing at no extra fee. Per-agent data retention runs from 1 day to 2 years, PII can be excluded from what is stored, and recording URLs can be signed. Services are not currently operated inside the EU |
| MCP-ready | No | stated Yes |
| Deployment | more entries Cloud (SaaS), Browser-based, On-premise | Cloud (SaaS), Browser-based |
| Support | Email helpdesk, Community forum | Not stated |
| Onboarding | Documentation and knowledge base | Documentation and knowledge base |
| Company size | Small and mid-sized, Enterprise | Small and mid-sized, Enterprise |
| Integrations | Microsoft Teams, Zoom, Google Meet, Webex, Okta, Microsoft Entra ID, AWS, Microsoft Azure, Google Cloud, Python SDK, Node.js SDK | Twilio, Telnyx, Vonage, Genesys Cloud, Five9, Avaya, Amazon Connect, HubSpot, Make, n8n, GoHighLevel |
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Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Key Differences
- Starting price Resemble AI Free tier (Flex, pay as you go); detection plans from $280 / month Retell AI From $0.07 / minute of calls
- Deployment Resemble AI Cloud (SaaS), Browser-based, On-premise Retell AI Cloud (SaaS), Browser-based
- Hosting Resemble AI Cloud, with containerised on-premise and air-gapped installs via Docker and Kubernetes Retell AI Cloud on AWS; the vendor states it does not currently operate services within the European Union
- Languages Resemble AI 100 languages and regional dialects on the managed platform, voice cloning in 23 Retell AI 57 languages listed for text-to-speech and 55 for speech recognition, each with the providers that cover it
- MCP-ready Resemble AI No Retell AI Yes
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
Resemble AI
Strengths
- Professional cloning with consent verification
- Speech-to-speech and Voice Design
- Trust and security tools
Limitations
- Public generative text-to-speech pricing is opaque, verify with a quote
- More developer and security oriented
Retell AI
Strengths
- Usage-based per-minute pricing with no contract and $10 in free credits to start
- Testing tooling built into the product: playground, simulation runs, batch tests and A/B splits of live traffic
- Custom voices can be cloned or imported across several voice providers
- HIPAA, SOC 2 Type 1 and Type 2 and GDPR, with BAA and DPA available for self-signing at no extra fee
Limitations
- The per-minute rate varies widely with the models, telephony and add-ons chosen, so the entry rate is not the rate to budget with
- The vendor states it does not currently operate services within the European Union
- Retell-managed phone numbers cover the US and Canada only; elsewhere a number has to be brought in
- Building and running an agent assumes developer work; there is no packaged seat-based plan
Plans
Pricing
Resemble AI
- Flex $0 / month No subscription fee, 1 seat. Usage is drawn from prepaid credits that do not expire: detection at $0.035 per second of audio, $0.035 per image and $0.07 per second of video. Includes platform and API access.
- Team $350 / month Or $280 / month billed annually. 5 seats, lower usage rates ($0.015 per second of audio, $0.03 per second of video), large and batch uploads, meetings intelligence included.
- Business $1,000 / month Or $800 / month billed annually. 20 seats, org-wide calendar integration and security notifications for meetings, single sign-on.
- Enterprise Not stated Quoted on request: volume pricing, enterprise SLAs, custom model training, on-premises deployment and dedicated support.
- Generative speech Not stated The published plans above cover the detection, watermarking, identity and meetings products. Text-to-speech, voice cloning and speech-to-speech are quoted on request.
Retell AI
- Pay as you go $0.07 Per minute and up, quoted by the vendor as $0.07 to $0.31 per minute for voice agents and from $0.002 per message for chat agents. Includes $10 in free credits and 20 concurrent calls, with no contract.
- Enterprise Not stated Contact sales. Custom pricing for higher volumes, with dedicated support and implementation, custom compliance terms covering HIPAA, SSO and a DPA, no cap on concurrent calls and a dedicated server option.
What users say
Review Scores · opens after launch
Resemble AI
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Retell AI
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
Resemble AI https://www.resemble.ai · checked against the official source on 2026-09-12
Retell AI https://www.retellai.com · checked against the official source on 2026-09-13
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.