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Software · head to head

Cartesia vs Poe

Cartesia logo

Cartesia

Software

Real-time voice AI platform for speech generation, transcription, and voice agents

From
Free
Rated
-
Full reviewWebsite
Poe logo

Poe

Software

Chat platform that gives access to many AI models from one subscription

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cartesia instant and professional voice cloning are gated behind paid Pro and Startup tiers, unavailable on the free plan.; Poe points-based pricing makes cost per message hard to predict across models.
  • They diverge on capability: Cartesia covers Sonic text-to-speech, Poe covers Multi-model chat.

Where they differ

Only the attributes on which Cartesia and Poe actually diverge.

Attributes where Cartesia and Poe differ
AttributeCartesiaPoe
Platformsweb, apiweb, ios, android, windows, mac
FoundedUnknown2009

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated), category (Unknown).

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 Poe

  • Multi-model chat
  • Custom bots
  • Image and video generation
  • Points-based usage
  • API access for bot creators

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 Poe
  • Real-time transcription for conversational applicationsnot Poe
  • Voice cloning for branded synthetic voicesnot Poe
  • On-device or on-premise voice AI for regulated industriesnot Poe

Poe

  • Comparing responses across multiple AI modelsnot Cartesia
  • Building and sharing custom prompt-based botsnot Cartesia
  • Accessing premium models without separate subscriptionsnot Cartesia
  • Generating images or video from a chat interfacenot 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.

Poe

  • Points-based pricing makes cost per message hard to predict across models.
  • Heavy usage of top-tier models can exhaust points quickly on lower plans.
  • No native fine-tuning or persistent long-term memory across bots.
  • Custom bots are limited to prompt engineering rather than full agent tooling.

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

Poe

Free
  • FreeFree
    • Limited daily messages across select models
  • Starter$4.99/month
    • Monthly compute points
    • Access to premium models
  • Premium$19.99/month
    • Larger monthly point allowance
    • Priority access to premium models
  • Premium Plus$49.99/month
    • Higher point allowance for heavy usage

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.
Cartesia review

Choose Poe if

  • You need multi-model chat.
  • You want to start without paying.
  • You work on web, ios, android, windows, mac.
  • You also want custom bots.
Poe review

Questions people ask

Is Cartesia or Poe better?
Neither clearly leads. Cartesia starts at Free and Poe at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cartesia or Poe?
Cartesia starts at Free and Poe at Free.
Does Cartesia or Poe run on more platforms?
Cartesia runs on web, api. Poe runs on web, ios, android, windows, mac.
Can I use Cartesia for free?
Both have a free tier, so you can try either at no cost before committing.
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 Poe is typically brought in for.
What can Cartesia do that Poe cannot?
Cartesia covers Sonic text-to-speech, Ink speech-to-text, Line voice agent platform, Instant and professional voice cloning. Poe covers Multi-model chat, Custom bots, Image and video generation, Points-based usage.

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%.

Source
Poe: How does Poe's pricing work?

Poe uses a monthly points system: each subscription tier grants a pool of compute points that are spent per message, with the amount depending on which underlying AI model is used.

Source
Cartesia: 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.

Source
Poe: Is there a free plan on Poe?

Yes, Poe offers a free tier with limited daily messages across a selection of models before users need a paid subscription for more access.

Source
Cartesia: 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.

Source
Poe: What do the paid subscription tiers cost?

Poe offers Starter at $4.99/month, Premium at $19.99/month, and Premium Plus at $49.99/month, each granting a larger monthly pool of compute points.

Source
Poe: What happens if I run out of points?

Once a subscription's monthly point allowance is exhausted, further use of premium models is limited until the points refresh or the user upgrades or purchases more.

Source
Poe: Can developers build on Poe?

Yes, Poe lets creators build and publish custom bots, and developers can connect their own model endpoints as bots via Poe's API.

Source
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