Cartesia Sonic 3.5vsElevenLabs v4 Turbo
Speed and accuracy
Left is faster. Higher reads more hard parts right.
- Cartesia Sonic 3.5261 ms · 73.1%
- ElevenLabs v4 Turbo176 ms · 79.9%
Cartesia Sonic 3.5 is better on stopping and price. ElevenLabs v4 Turbo is better on non-streaming latency, streaming latency, accuracy and naturalness.
Last updated Methodology by Dileep Chagam
Which is better at what
Measure by measure, the same sentences, the same place.
- Non-streaming latency (median)ElevenLabs v4 Turbo is better261 ms176 msElevenLabs v4 Turbo
- Streaming latency (median)ElevenLabs v4 Turbo is better244 ms69 msElevenLabs v4 Turbo
- Extra audio after a stopCartesia Sonic 3.5 is better809 msFinishes firstCartesia Sonic 3.5
- Hard parts read rightElevenLabs v4 Turbo is better73.1%79.9%ElevenLabs v4 Turbo
- Naturalness (1 to 5)ElevenLabs v4 Turbo is better4.414.42ElevenLabs v4 Turbo
- Price per 1M charactersCartesia Sonic 3.5 is better$39.20$40.00Cartesia Sonic 3.5
- Numbers and shorthand7 a.m. · 20% · 36°F · approx.69%71%ElevenLabs v4 Turbo
- Codes and addressesSAVE20 · help@north-clinic.org · 1-800-555-019975%82%ElevenLabs v4 Turbo
- Read from contextSt. Mary's on Main St. · Dr. Okafor54%88%ElevenLabs v4 Turbo
- Medical termslevothyroxine · gastroenterology97%100%ElevenLabs v4 Turbo
An estimate: speech-to-text transcribers scored it, not people.
Hear both
The same sentence, read by each voice.
- 01A greetingThanks for calling Cedar Valley Family Practice, this is Riley. How can I help you today?
- 02MoneyYour current balance is $1,347.09.
- 03A dateThe order was placed on 2026-03-14 and shipped two days later.
- 04Tracking codeThe tracking number is 1Z 7A4 X29 0341 8867.
- 05Email addressI have m.rivera88@example.org, is that still current?
- 06An Irish nameSiobhan Ó Briain called about the invoice.
How each ranks among all 26
- Non-streaming latency (median)8 of 264 of 26
- Streaming latency (median)10 of 183 of 18
- Extra audio after a stop6 of 6n/a
- Hard parts read right24 of 2616 of 26
- Naturalness (1 to 5)14 of 2611 of 26
- Price per 1M characters16 of 2518 of 25
Cartesia Sonic 3.5 vs ElevenLabs v4 Turbo FAQ
Which starts talking sooner, Cartesia Sonic 3.5 or ElevenLabs v4 Turbo?
ElevenLabs v4 Turbo. Cartesia Sonic 3.5: 261 ms. ElevenLabs v4 Turbo: 176 ms.
ElevenLabs v4 Turbo. Cartesia Sonic 3.5: 261 ms. ElevenLabs v4 Turbo: 176 ms.
ElevenLabs v4 Turbo. Cartesia Sonic 3.5: 244 ms. ElevenLabs v4 Turbo: 69 ms.
Cartesia Sonic 3.5. Cartesia Sonic 3.5: 809 ms. ElevenLabs v4 Turbo: Finishes first.
ElevenLabs v4 Turbo. Cartesia Sonic 3.5: 73.1%. ElevenLabs v4 Turbo: 79.9%.
Cartesia Sonic 3.5. Cartesia Sonic 3.5: $39.20. ElevenLabs v4 Turbo: $40.00.