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AI · head to head

Cartesia vs Hetzner Cloud

Cartesia logo

Cartesia

AI

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

From
Free
Free plan
Yes
Full reviewWebsite
Hetzner Cloud logo

Hetzner Cloud

Cloud

Affordable cloud servers in Europe

From
Free
Free plan
Yes
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.; Hetzner Cloud cost-Optimized plans are shown as currently unavailable
  • They diverge on capability: Cartesia covers Sonic text-to-speech, Hetzner Cloud covers Cloud servers.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Cartesia and Hetzner Cloud actually diverge.

Attributes where Cartesia and Hetzner Cloud differ
AttributeCartesiaHetzner Cloud
Pricing modelfreemiumusage-based
Platformsweb, apiWeb, Api, Cli
CategoryAICloud
FoundedUnknown1997

Identical on both: starting price (Free), 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 Hetzner Cloud

  • Cloud servers
  • Block storage
  • Object storage
  • Load balancers
  • Networks
  • Firewalls
  • Floating IPs
  • Backups

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

Hetzner Cloud

  • Low-cost virtual servers for development and testingnot Cartesia
  • European hosting with data held in Germany or Finlandnot Cartesia
  • Workloads with heavy egress, where included traffic mattersnot Cartesia
  • Self-hosting applications away from the hyperscalersnot 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.

Hetzner Cloud

  • Cost-Optimized plans are shown as currently unavailable
  • The shared-resource tiers are positioned for variable usage and development rather than sustained production workloads
  • Regions are limited to Germany, Finland, the United States and Singapore, so latency to other markets is a real constraint
  • The uptime guarantee is 99.9 percent, below what the large hyperscalers offer on comparable services
  • Support is 24/7 by email, without a phone channel

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

Hetzner Cloud

Free
  • CX11$3.29/month
    • 1 vCPU
    • 1GB RAM
    • 25GB SSD
  • CX21$6.59/month
    • 2 vCPU
    • 4GB RAM
    • 40GB SSD

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 Hetzner Cloud if

  • You need cloud servers.
  • You want to start without paying.
  • You work on Web, Api, Cli.
  • You also want block storage.
Hetzner Cloud review

Questions people ask

Is Cartesia or Hetzner Cloud better?
Neither clearly leads. Cartesia starts at Free and Hetzner Cloud at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cartesia or Hetzner Cloud?
Cartesia starts at Free and Hetzner Cloud at Free.
Does Cartesia or Hetzner Cloud run on more platforms?
Cartesia runs on web, api. Hetzner Cloud runs on Web, Api, Cli.
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 Hetzner Cloud is typically brought in for.
What can Cartesia do that Hetzner Cloud cannot?
Cartesia covers Sonic text-to-speech, Ink speech-to-text, Line voice agent platform, Instant and professional voice cloning. Hetzner Cloud covers Cloud servers, Block storage, Object storage, Load balancers.

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
Hetzner Cloud: What types of cloud plans does Hetzner Cloud offer?

Hetzner Cloud offers Shared Resource plans (Cost-Optimized and Regular Performance) for development and testing, and Dedicated Resource plans (General Purpose) for business applications. Plans are available with a price calculator on their website.

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
Hetzner Cloud: What is included with Hetzner Cloud servers?

Every cloud server comes with free one-click apps like Docker, WordPress, Nextcloud, and GitLab. All servers include stateful firewalls at no additional cost, networking capabilities, APIs, and CLI tools.

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
Hetzner Cloud: Where are Hetzner Cloud servers located?

Hetzner Cloud servers are available in Germany, Finland, Singapore, and the USA, with data centers in Falkenstein, Nuremberg, Helsinki, Hillsboro (Oregon), Ashburn (Virginia), and Singapore.

Source
Hetzner Cloud: What uptime guarantee does Hetzner Cloud provide?

Hetzner Cloud provides an SLA with 99.9% guaranteed uptime and clearly defined credits in case of malfunction. They also offer 24/7 support by email for business-critical workloads.

Source
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