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Software · head to head

Poolside vs Cartesia

Poolside logo

Poolside

Software

Open-weight foundation models built for agentic software engineering

From
$0.06/month
Rated
-
Full reviewWebsite
Cartesia logo

Cartesia

Software

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Cartesia has a free tier, so it costs nothing to try first.
  • Each has a real cost: Poolside no self-serve public application; access is largely through enterprise sales or third-party model gateways; Cartesia instant and professional voice cloning are gated behind paid Pro and Startup tiers, unavailable on the free plan.
  • They diverge on capability: Poolside covers Laguna S 2.1, Cartesia covers Sonic text-to-speech.

Where they differ

Only the attributes on which Poolside and Cartesia actually diverge.

Attributes where Poolside and Cartesia differ
AttributePoolsideCartesia
Starting price$0.06/monthFree
Pricing modelusage-basedfreemium
Free tierNoYes
Platformsweb, api, mac, windows, linuxweb, api
Founded2023Unknown

Identical on both: 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 Poolside

  • Laguna S 2.1
  • Laguna XS 2.1
  • Desktop and CLI tools
  • Open-weight models
  • Third-party gateway access

Only in Cartesia

  • Sonic text-to-speech
  • Ink speech-to-text
  • Line voice agent platform
  • Instant and professional voice cloning
  • Flexible deployment
  • Telephony integration

What people use each for

The jobs each tool is most often brought in to do.

Poolside

  • Enterprises deploying AI coding assistance across large developer organizationsnot Cartesia
  • Government and defense agencies needing on-premise or sovereign coding modelsnot Cartesia
  • Teams building custom coding agents on open-weight foundation modelsnot Cartesia
  • Organizations wanting on-device lightweight coding modelsnot Cartesia

Cartesia

  • Building low-latency voice agents for customer supportnot Poolside
  • Real-time transcription for conversational applicationsnot Poolside
  • Voice cloning for branded synthetic voicesnot Poolside
  • On-device or on-premise voice AI for regulated industriesnot Poolside

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Poolside

  • No self-serve public application; access is largely through enterprise sales or third-party model gateways
  • Pricing for the flagship enterprise and government offering is not public and requires a sales conversation
  • Targets organizations with large (5,000+) developer headcounts, making it a poor fit for individuals or small teams
  • Documentation and product surface area are thin compared to consumer-facing coding assistants

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.

Pricing, plan by plan

Poolside

$0.06/month
  • Laguna XS 2.1$undefined/month
    • $0.06 per 1M input tokens
    • $0.12 per 1M output tokens
    • Available via OpenRouter and Vercel AI Gateway
  • Laguna S 2.1$undefined/month
    • $0.10 per 1M input tokens
    • $0.20 per 1M output tokens
    • 1M token context window
  • Enterprise / Government$undefined/month
    • Custom contracts for large engineering organizations
    • Sales-quoted pricing
    • On-premise or dedicated deployment options

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

Which should you pick?

Choose Poolside if

  • You need laguna s 2.1.
  • You work on web, api, mac, windows, linux.
  • You also want laguna xs 2.1.
Poolside review

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

Questions people ask

Is Poolside or Cartesia better?
Neither clearly leads. Poolside starts at $0.06/month and Cartesia at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Poolside or Cartesia?
Cartesia has a free tier; the other does not. Paid plans start at $0.06/month for Poolside and Free for Cartesia.
Does Poolside or Cartesia run on more platforms?
Poolside runs on web, api, mac, windows, linux. Cartesia runs on web, api.
Can I use Cartesia for free?
Yes. Cartesia has a free tier, so you can try it without paying. Poolside starts at $0.06/month.
What is Poolside best used for?
Poolside is most often used for enterprises deploying ai coding assistance across large developer organizations, government and defense agencies needing on-premise or sovereign coding models, teams building custom coding agents on open-weight foundation models, organizations wanting on-device lightweight coding models. Of those, enterprises deploying ai coding assistance across large developer organizations and government and defense agencies needing on-premise or sovereign coding models are not what Cartesia is typically brought in for.
What can Poolside do that Cartesia cannot?
Poolside covers Laguna S 2.1, Laguna XS 2.1, Desktop and CLI tools, Open-weight models. Cartesia covers Sonic text-to-speech, Ink speech-to-text, Line voice agent platform, Instant and professional voice cloning.

Answered from the vendors’ own pages

Poolside: How is Poolside's Laguna model usage priced?

Laguna XS 2.1 is priced at $0.06 per 1M input tokens and $0.12 per 1M output tokens; Laguna S 2.1 is $0.10 per 1M input tokens and $0.20 per 1M output tokens.

Source
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
Poolside: Where can I access Poolside's models?

Laguna models are available through third-party gateways OpenRouter and Vercel AI Gateway, as well as via Poolside's own desktop and CLI tools.

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
Poolside: Does Poolside offer enterprise or government pricing?

Yes, Poolside offers custom, sales-quoted contracts for large enterprises and government/defense customers, including on-premise or dedicated deployment options.

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
Poolside: How do I get started building with Poolside's models?

Poolside's documentation provides a quickstart guide for installing the `pool` CLI and running an agent task, alongside API documentation for custom integrations.

Source
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