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Cartesia Sonic vs ElevenLabs Multilingual v2
Side-by-side intelligence, speed, price, benchmarks, strengths and weaknesses for Cartesia Sonic and ElevenLabs Multilingual v2 — refreshed monthly.
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Cartesia Sonic
ProprietaryMay 2024
Sub-100ms time-to-first-byte — built for realtime voice agents.
ElevenLabs
ElevenLabs Multilingual v2
ProprietaryAug 2023
The industry standard for expressive cloned voices.
Head to head
Spec
Cartesia Sonic
ElevenLabs Multilingual v2
Time to first token↓ better
Winner0.09 s
0.4 s
Price per 1k characters↓ better
Winner$0.07
$0.18
License
Proprietary
Proprietary
Input modalities
text
text
Output modalities
audio
audio
Strengths, weaknesses and best-for
Cartesia Sonic
Strengths
- Fastest TTFB on the market
- Voice cloning
Weaknesses
- Newer ecosystem
Best for
- Realtime voice agents
- Live conversations
ElevenLabs Multilingual v2
Strengths
- Best voice cloning
- Wide language support
- 11 emotion settings
Weaknesses
- Premium-priced
Best for
- Audiobooks
- Game NPCs
- Voice assistants
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