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AI · head to head

Cartesia vs Fireflies.ai

Cartesia logo

Cartesia

AI

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

From
Free
Rated
-
Full reviewWebsite
Fireflies.ai logo

Fireflies.ai

Remote Work

AI note-taking for teams

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.; Fireflies.ai video recording limits by tier: Free tier has 2 hours, Pro tier 2 hours, Business tier 3 hours, Enterprise tier 4 hours
  • They diverge on capability: Cartesia covers Sonic text-to-speech, Fireflies.ai covers Automatic transcription.

Where they differ

Only the attributes on which Cartesia and Fireflies.ai actually diverge.

Attributes where Cartesia and Fireflies.ai differ
AttributeCartesiaFireflies.ai
Platformsweb, apiWeb, iOS, Android, Desktop, Chrome extension
CategoryAIRemote Work
FoundedUnknown2018

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), 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 Fireflies.ai

  • Automatic transcription
  • Meeting summaries
  • Action item extraction
  • Speaker identification
  • Search functionality
  • Team sharing
  • Integration APIs
  • Zoom

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

Fireflies.ai

  • Meeting transcription and note-taking across teamsnot Cartesia
  • AI-powered meeting summaries in 100+ languagesnot Cartesia
  • Unlimited transcription and AI summaries on paid tiersnot 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.

Fireflies.ai

  • Video recording limits by tier: Free tier has 2 hours, Pro tier 2 hours, Business tier 3 hours, Enterprise tier 4 hours
  • Storage quotas on Free and Pro tiers: Free tier limited to 400 minutes per team, Pro tier limited to 8,000 minutes per seat
  • AI credits allocation varies by tier, with lower tiers receiving limited credits for advanced AI features

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

Fireflies.ai

Free

No published plan breakdown. See the Fireflies.ai review.

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 Fireflies.ai if

  • You need automatic transcription.
  • You want to start without paying.
  • You work on Web, iOS, Android, Desktop, Chrome extension.
  • You also want meeting summaries.
Fireflies.ai review

Questions people ask

Is Cartesia or Fireflies.ai better?
Neither clearly leads. Cartesia starts at Free and Fireflies.ai at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cartesia or Fireflies.ai?
Cartesia starts at Free and Fireflies.ai at Free.
Does Cartesia or Fireflies.ai run on more platforms?
Cartesia runs on web, api. Fireflies.ai runs on Web, iOS, Android, Desktop, Chrome extension.
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 Fireflies.ai is typically brought in for.
What can Cartesia do that Fireflies.ai cannot?
Cartesia covers Sonic text-to-speech, Ink speech-to-text, Line voice agent platform, Instant and professional voice cloning. Fireflies.ai covers Automatic transcription, Meeting summaries, Action item extraction, Speaker identification.

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
Fireflies.ai: Does Fireflies.ai have a free plan?

Yes, Fireflies has a free plan with unlimited transcription and AI summaries. The free plan includes 400 minutes of storage per team and 20 AI credits.

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
Fireflies.ai: What are Fireflies.ai's paid plan prices?

Fireflies offers three paid tiers: Pro at $10/seat/month (billed annually, $18/month if monthly), Business at $19/seat/month (billed annually, $29/month if monthly), and Enterprise at $39/seat/month (annual billing only).

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
Fireflies.ai: How much storage do Fireflies plans include?

The free plan includes 400 minutes of storage per team. Pro includes 8,000 minutes per seat. Business and Enterprise plans offer unlimited storage.

Source
Fireflies.ai: What is the most popular Fireflies plan?

The Business plan at $19/seat/month (billed annually) is marked as the most popular option. It includes unlimited storage, 30 AI credits, multi-language mode, and conversation intelligence.

Source
Fireflies.ai: What discount does annual billing provide on Fireflies?

Annual billing saves up to 44% compared to monthly pricing across all paid tiers.

Source
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