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 | 1.22M requests | +25% | |
| 2 | Gemini 3.1 Flash TTS Preview | 624K requests | -1% | |
| 3 | Kokoro 82M | hexgrad | 510K requests | +24% |
| 4 | Gemini 3.8 Flash Lite TTS | 479K requests | +100% | |
| 5 | Grok Voice TTS 1.0 | x-ai | 369K requests | +30% |
| 6 | S2.1 Pro Free (free) | fish-audio | 157K requests | +32% |
| 7 | S2.1 Pro | fish-audio | 111K requests | -29% |
| 8 | Aura-2 | deepgram | 85K requests | +7% |
| 9 | MAI-Voice-2.1-Flash | microsoft | 85K requests | >999% |
| 10 | MAI-Voice-2 | microsoft | 50K requests | -35% |
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