AI Rankings

Cartesia

Real-time voice agent TTS built on a state-space model, with Sonic 3 hitting roughly 40–90ms time-to-first-audio and 3-second voice cloning.

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Our editorial assessment, based on the public sources listed below. Last reviewed .

Task rank
#2
Tier
S
Score
86.6

Strengths

  • Very low time-to-first-audio (~40–90ms) makes it well-suited to live voice agents
  • Free plan plus Pro starting around $4/month (annual) keeps entry cost low for developers
  • Instant voice cloning from as little as 3 seconds of reference audio

Considerations

  • Multilingual coverage is narrower than major commercial-language competitors
  • Out-of-the-box agent personas and prebuilt voices are less extensive than ElevenLabs
  • Higher-volume Startup ($39/mo) and Scale ($239/mo) tiers can ramp up quickly

Price

Free plan; Pro from $4/month (annual); Startup $39/month, Scale $239/month

Shown for reference — price is not part of the score.

Score breakdown

Performance
89.0
55% of score
Reputation
80.0
35% of score
Recency
96.0
10% of score

The overall score combines these sub-scores using the weights shown. How we score →

Verification status

Each field carries its own re-verification date. Amber means older than 90 days — treat those figures as stale until re-checked.

Pricing
Benchmark
Reputation
Feature list

Checked against the sources listed below.

Sources

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