All tasks / Comparisons
Sonic 3.6 vs Eleven v4
Compared only on public benchmark results, across the 1 task where both are listed: Eleven v4 is a tier higher in 1 of 1 shared task.
Sonic 3.6
Cartesia's low-latency streaming text-to-speech models, aimed at real-time voice agents.
- Vendor
- Cartesia
- Weights
- Closed: API and apps only
- Released
- 17 Aug 2026
- API price
- $49 per 1M characters (Artificial Analysis normalised price for Sonic 3.6 (USD per 1M characters).)
- License
- proprietary
- Last verified
- 18 Oct 2026
Eleven v4
ElevenLabs' flagship text-to-speech model line for expressive narration and dialogue, with voice cloning.
- Vendor
- ElevenLabs
- Weights
- Closed: API and apps only
- Released
- 28 Sep 2026
- API price
- $80 per 1M characters (Artificial Analysis normalised price for Eleven v4 (USD per 1M characters).)
- License
- proprietary
- Last verified
- 18 Oct 2026
Task by task
| Task | Sonic 3.6 | Eleven v4 | Higher tier |
|---|---|---|---|
| Text to speech Models | A1,287 on Artificial Analysis Speech Arena: Text to Speech (provider voices) · Cloud | S1,328 on Artificial Analysis Speech Arena: Text to Speech (provider voices) · Cloud | Eleven v4 |
A tier spans a range of scores, and small gaps on a leaderboard are often within its margin of error, so only a different tier counts as ahead. How we rank.
Same benchmark, both results
| Benchmark | Sonic 3.6 | Eleven v4 | Snapshot |
|---|---|---|---|
| Artificial Analysis Speech Arena: Text to Speech (provider voices) Elo from blind pairwise listener votes, each model using its own provider voices (all categories, US and UK accents), higher is better | 1,287 | 1,328 | 18 Oct 2026 |