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AI Voice & Speech Comparison

Cartesia vs. Hume AI

At a glance

At a glance

Cartesia

Best for

Best for developers building low-latency, real-time voice agents.

  • Small and mid-sized
  • Enterprise

Hume AI

Best for

Best for apps and content that need expressive, emotionally aware speech and real-time voice interactions.

  • Freelancers
  • Small and mid-sized
  • Enterprise

Cataleo does not name a winner. Both statements come from the vendors themselves.

Full Comparison

Criterion Cartesia Hume AI
Starting price Free tier; Pro from $5 / month Usage-based credits and agent minutes. Pro adds a commercial-use license and instant voice cloning. lower value Free tier; paid from $3 / month Paid tiers are metered by monthly TTS characters and EVI minutes.
Free trial Free tier with 20,000 credits per month Free tier with 10,000 TTS characters and 5 minutes of EVI per month
Commercial use Paid Yes
Output Low-latency real-time speech, instant clone from around three seconds Expressive text-to-speech (Octave) and empathic speech-to-speech (EVI)
API Yes Yes
Voice cloning Yes, instant cloning from around three seconds, plus a Pro clone trained on 30 minutes or more of audio Yes, from about 15 seconds of audio
Real-time use Yes, real-time text-to-speech (Sonic), built for live voice agents Yes, Octave 2 streaming with latency as low as about 100ms
Languages Yes, Sonic 3.6 covers 44 languages natively, chosen per request with a language parameter and regional locale variants Octave 2 in 11 languages
Speech-to-speech and dubbing Yes, a voice changer, plus localization that converts existing audio across the 44 supported languages while holding the speaker's emotion and identity Yes, the EVI empathic voice interface
Editing and controls Speed 0.6x to 1.5x, volume 0.5x to 2x, an emotion setting (neutral, calm, angry, content, sad) or model-interpreted emotion, custom pronunciation dictionaries, accent selection for multilingual voices and text normalization Voice design from text prompts (English), plus emotional expression from context
Consent and trust The terms of service forbid publishing audio of another person's voice without that person's express permission, and name deceased people and political candidates explicitly Cloning requires filling out a legal agreement confirming you hold the rights or consent for the sample, and use is bound by Hume's Terms of Use and Ethical Guidelines
Deployment Cloud (SaaS), Browser-based Cloud (SaaS), Browser-based
Support Not stated Community forum
Onboarding Documentation and knowledge base Documentation and knowledge base
Company size Small and mid-sized, Enterprise more entries Freelancers, Small and mid-sized, Enterprise

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Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.

The short version

Key Differences

  • Starting price Cartesia Free tier; Pro from $5 / month Hume AI Free tier; paid from $3 / month
  • Free trial Cartesia Free tier with 20,000 credits per month Hume AI Free tier with 10,000 TTS characters and 5 minutes of EVI per month
  • Company size Cartesia Small and mid-sized, Enterprise Hume AI Freelancers, Small and mid-sized, Enterprise
  • Commercial use Cartesia Paid Hume AI Yes
  • Output Cartesia Low-latency real-time speech, instant clone from around three seconds Hume AI Expressive text-to-speech (Octave) and empathic speech-to-speech (EVI)

Every line is one datapoint from the table above, picked automatically. Nothing here is written text.

The trade-offs

Strengths and Limitations

Cartesia

Strengths

  • Lowest-latency real-time voice for agents
  • Instant three-second cloning
  • Cost-effective developer API

Limitations

  • Less expressive on long-form and audiobook content
  • Newer and developer-oriented

Hume AI

Strengths

  • Expressive, emotionally aware speech
  • Voice cloning from about 15 seconds and voice design from text prompts
  • Low-latency streaming for real-time voice agents

Limitations

  • Voice design and acting instructions are English only or still in preview
  • Character and EVI-minute caps scale the monthly cost

Plans

Pricing

Cartesia

  • Free $0 20,000 credits per month plus $1 of prepaid agent usage. Text-to-speech and speech-to-text.
  • Pro $5 / month 100,000 credits, a commercial-use license and instant voice cloning.
  • Startup $49 / month 1.25 million credits, professional voice cloning and organizations.
  • Scale $299 / month 8 million credits, priority support and high concurrency limits.
  • Enterprise Not stated Custom credits and agent usage, custom concurrency limits, DPAs/BAAs and SSO.
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Hume AI

  • Free $0 10,000 TTS characters and 5 minutes of EVI per month.
  • Starter $3 / month 30,000 TTS characters and 40 minutes of EVI per month.
  • Creator $14 / month 140,000 TTS characters and 200 minutes of EVI per month; 50% off the first month.
  • Pro $70 / month 1M TTS characters and 1,200 minutes of EVI per month.
  • Scale $200 / month 3.3M TTS characters and 5,000 minutes of EVI per month.
  • Business $500 / month 10M TTS characters and 12,500 minutes of EVI per month.
  • Enterprise Not stated Custom pricing with unlimited usage.
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What users say

Review Scores · opens after launch

Cartesia

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Hume AI

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Where this comes from

Where this comes from

Cartesia https://cartesia.ai · no check date recorded yet

Hume AI https://www.hume.ai · no check date recorded yet

This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.