Rankings data by OpenRouter is licensed under CC BY 4.0. Reuse and republish it with attribution. The Data API docs cover the citation format and JSON access to these datasets.
| Rank | Model | Author | requests | Change |
|---|---|---|---|---|
| 1 | Gemini 3.8 Flash TTS | 1.13M requests | +37% | |
| 2 | Gemini 3.1 Flash TTS Preview | 618K requests | -7% | |
| 3 | Gemini 3.8 Flash Lite TTS | 458K requests | +136% | |
| 4 | Kokoro 82M | hexgrad | 452K requests | +5% |
| 5 | Grok Voice TTS 1.0 | x-ai | 370K requests | +27% |
| 6 | S2.1 Pro Free (free) | fish-audio | 150K requests | +20% |
| 7 | S2.1 Pro | fish-audio | 120K requests | -14% |
| 8 | Aura-2 | deepgram | 77K requests | +23% |
| 9 | MAI-Voice-2.1-Flash | microsoft | 71K requests | >999% |
| 10 | MAI-Voice-2 | microsoft | 57K requests | -21% |
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