AI Tools · head to head
Cartesia vs Riverside.fm

Cartesia
AI Tools
Real-time voice AI platform for speech generation, transcription, and voice agents
- From
- Free
- Rated
- -

Riverside.fm
Video & Audio Production
High-quality remote podcast and video recording platform
- From
- On request
- Rated
- -
The short version
- Only Cartesia has a free tier, so it costs nothing to try first.
- Each has a real cost: Cartesia instant and professional voice cloning are gated behind paid Pro and Startup tiers, unavailable on the free plan.; Riverside.fm free plan limited to 2 hours of multi-track recording and adds a watermark
- They diverge on capability: Cartesia covers Sonic text-to-speech, Riverside.fm covers Remote recording.
Where they differ
Only the attributes on which Cartesia and Riverside.fm actually diverge.
| Attribute | Cartesia | Riverside.fm |
|---|---|---|
| Starting price | Free | On request |
| Pricing model | freemium | subscription |
| Free tier | Yes | No |
| Platforms | web, api | Web, Ios, Android |
| Category | AI Tools | Video & Audio Production |
| Founded | Unknown | 2019 |
Identical on both: user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Cartesia
- Sonic text-to-speech
- Ink speech-to-text
- Line voice agent platform
- Instant and professional voice cloning
- Flexible deployment
- Telephony integration
Only in Riverside.fm
- Remote recording
- High-quality capture
- Automatic transcription
- Video editing
- Live streaming
- Distribution tools
- Zapier
- IFTTT
What people use each for
The jobs each tool is most often brought in to do.
Cartesia
- Building low-latency voice agents for customer supportnot Riverside.fm
- Real-time transcription for conversational applicationsnot Riverside.fm
- Voice cloning for branded synthetic voicesnot Riverside.fm
- On-device or on-premise voice AI for regulated industriesnot Riverside.fm
Riverside.fm
- Remote podcast and video interview recording with multi-track separationnot Cartesia
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Cartesia
- Instant and professional voice cloning are gated behind paid Pro and Startup tiers, unavailable on the free plan.
- Voice agent calls carry a separate per-minute usage fee ($0.06/minute) on top of subscription credits.
- Enterprise features like SSO and BAAs require a custom sales conversation rather than self-serve upgrade.
- Free tier concurrency limits (2 TTS, 8 STT concurrent requests) may be restrictive for testing production-like load.
Riverside.fm
- Free plan limited to 2 hours of multi-track recording and adds a watermark
- Pro plan at $29 per month caps separate-track recording at 5 hours per month
- Business plan with unlimited storage and SSO is quote only, requiring contact with sales
Pricing, plan by plan
Cartesia
Free- FreeFree
- 20,000 credits/month
- TTS and STT included
- 2 concurrent TTS requests, 8 concurrent STT requests
- Pro$4/month
- 100,000 credits/month
- Commercial use license
- Instant voice cloning
- Startup$39/month
- 1.25M credits/month
- Professional voice cloning
- Organizations support
- Scale$239/month
- 8M credits/month
- Priority support
- High concurrency limits
Riverside.fm
On request- StarterFree
- 1 hour/month recording
- 1080p recording
- Automatic transcription
- Professional$19/month
- 20 hours/month recording
- 4K recording quality
- Advanced editing
- Studio$99/month
- Unlimited recording
- 4K video quality
- Team collaboration
Which should you pick?
Choose Cartesia if
- You need sonic text-to-speech.
- You want to start without paying.
- You work on web, api.
- You also want ink speech-to-text.
Choose Riverside.fm if
- You need remote recording.
- You work on Web, Ios, Android.
- You also want high-quality capture.
Questions people ask
- Is Cartesia or Riverside.fm better?
- Neither clearly leads. Cartesia starts at Free and Riverside.fm at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Cartesia or Riverside.fm?
- Cartesia has a free tier; the other does not. Paid plans start at Free for Cartesia and On request for Riverside.fm.
- Does Cartesia or Riverside.fm run on more platforms?
- Cartesia runs on web, api. Riverside.fm runs on Web, Ios, Android.
- Can I use Cartesia for free?
- Yes. Cartesia has a free tier, so you can try it without paying. Riverside.fm starts at On request.
- What is Cartesia best used for?
- Cartesia is most often used for building low-latency voice agents for customer support, real-time transcription for conversational applications, voice cloning for branded synthetic voices, on-device or on-premise voice ai for regulated industries. Of those, building low-latency voice agents for customer support and real-time transcription for conversational applications are not what Riverside.fm is typically brought in for.
- What can Cartesia do that Riverside.fm cannot?
- Cartesia covers Sonic text-to-speech, Ink speech-to-text, Line voice agent platform, Instant and professional voice cloning. Riverside.fm covers Remote recording, High-quality capture, Automatic transcription, Video editing.
Answered from the vendors’ own pages
Cartesia: What does Cartesia cost?
Cartesia offers a free plan, Pro at $4/month, Startup at $39/month, Scale at $239/month, and custom Enterprise pricing, each including a monthly credit allotment, with annual billing saving 20%.
SourceCartesia: Is there a free plan, and what are its limits?
The Free plan includes 20,000 credits per month, both TTS (Sonic) and STT (Ink), 2 concurrent TTS requests, 8 concurrent STT requests, and 1 voice agent slot.
SourceCartesia: How is usage metered?
Usage draws down a monthly credit allotment, with voice agent calls additionally billed at $0.06/minute and telephony via Cartesia phone numbers at $0.014/minute.
SourceRelated pages
More on Riverside.fm
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