Audio modelActive
Sonic 3.6
Cartesia
- Released
- -
- Data date
- September 24, 2026
- Model class
- Access
Sonic 3.6 is Cartesia’s fast, natural-sounding text-to-speech model with support for 44 languages. It follows the transcript closely, speaks confirmation codes and difficult heteronyms without preprocessing, and adapts pauses and pacing to context. The documented language expansion also includes Latin-script Hindi, Odia, and Urdu.
Cartesia uses sonic-3.6 as an alias for the latest stable snapshot, while sonic-3.6-2026-08-27 stays on that dated version. The two identifiers therefore differ in reproducibility, not in the documented model family.
Specifications and access
| Specification | Value and source |
|---|---|
| Model class | Text-to-speechSource |
| Access | APISource |
| API model ID | sonic-3.6Source |
| Input | TextSource |
| Output | AudioSource |
| Task | Speech generationSource |
| Supported details | 44 languages and stable dated snapshotsSource |
| Versions | sonic-3.6 tracks the current stable release; dated snapshots remain fixedSource |
| Stable snapshot | sonic-3.6-2026-08-27Source |
Popularity
39.3 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Additional source | Cartesia model documentation (retrieved September 24, 2026) · Cartesia Sonic 3.6 documentation · Editorial description reviewed October 2, 2026 |
| Additional source | Cartesia Sonic 3.6 latest model documentation · Editorial description reviewed October 2, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Creative Commons Attribution 4.0 |