Benchmark · read on October 27, 2026
Text-to-speech models measured by Coval
31 of the 96 text-to-speech (TTS) models in this index are filed under Coval , led by Fluxions vui, Gradium TTS and Inworld Realtime TTS-2 Flash. Same order and same measures as the full ranking.
| Rank | Model | Speed tier | P95 | Speed (shorter is faster) | Median | Listener Elo | Price per 1M chars | Best for |
|---|---|---|---|---|---|---|---|---|
| 1 | | Headroom | 75 ms | 39.7 ms | Not rated | $9 | Voice agents | |
| 2 |  Gradium TTSGradium | Headroom | 104.3 ms | 53.7 ms | 1,174 | $36 to $57.8 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 3 |  Inworld Realtime TTS-2 FlashInworld | Headroom | 100.9 ms | 58.1 ms | 1,218 | $10.4 to $15 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 4 |  Alibaba Qwen3 TTS FastAlibaba (Qwen) | Headroom | 98.8 ms | 62.9 ms | Not rated | $10 | Voice agents | |
| 5 |  Alibaba Qwen3 TTS 1.7bAlibaba (Qwen) | Fast enough | 136.6 ms | 103.6 ms | Not rated | Not collected | Voice agents | |
| 6 |  SpeechifyAI Simba 3.0Speechify | Fast enough | 149.4 ms | 100.5 ms | 1,116 | $6.6 to $10 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 7 |  SpeechifyAI Simba 3.2Speechify | Fast enough | 161.1 ms | 104.3 ms | 1,249 | $6.6 to $10 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 8 |  Inworld Realtime TTS-2Inworld | Fast enough | 194.7 ms | 149.1 ms | 1,267 | $15 to $25 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 9 |  Palabra TTS v1Palabra | Fast enough | 214.3 ms | 105.1 ms | Not rated | $12 | Voice agents | |
| 10 |  Fish Audio Drama 3 PreviewFish Audio | Fast enough | 209.3 ms | 146 ms | 1,245 | $15 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 11 |  ElevenLabs Eleven v4 TurboElevenLabs | Fast enough | 238.6 ms | 188.9 ms | 1,333 | $40 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 12 |  ElevenLabs Flash v2.5ElevenLabs | Fast enough | 255.1 ms | 191 ms | 1,076 | $40 to $50 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 13 |  Deepgram Flux TTSDeepgram | Fast enough | 267 ms | 197.7 ms | 1,052 | $45 | Customer service, Voice agents, Assistants, Entertainment, Knowledge sharing | |
| 14 |  Soniox TTS RT v1Soniox | Visible delay | 319 ms | 258.3 ms | Not rated | $13 to $14.1 | Not rated | |
| 15 |  Soniox TTS Real-Time v2Soniox | Visible delay | 324.7 ms | 264.4 ms | 1,180 | $13 to $14.81 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 16 |  Murf AI Falcon 2Murf AI | Visible delay | 363.5 ms | 171.3 ms | 1,154 | $10 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 17 |  Rime Mist v3Rime | Visible delay | 359.9 ms | 275.2 ms | Not rated | $30 | Not rated | |
| 18 |  Cartesia Sonic 3.6Cartesia | Visible delay | 374.4 ms | 285.8 ms | 1,292 | $39.2 to $50 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 19 |  Cartesia Sonic 3.5Cartesia | Visible delay | 390.5 ms | 279.3 ms | 1,190 | $39.2 to $50 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 20 |  Deepdub PhantomZ 4.0Deepdub | Visible delay | 430 ms | 183.4 ms | Not rated | Not collected | Not rated | |
| 21 |  Rime CodaRime | Visible delay | 428.1 ms | 317.5 ms | 1,054 | $50 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 22 | Out of Set Airy TTSOut of Set | Visible delay | 453.9 ms | 212.3 ms | Not rated | $3.67 | Not rated | |
| 23 |  SpaceXAI Grok TTSxAI | Visible delay | 473.9 ms | 329.8 ms | 1,155 | $15 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 24 |  Deepgram Aura 2Deepgram | Visible delay | 525.4 ms | 263 ms | Not rated | $30 | Not rated | |
| 25 |  Fish Audio S2.1 ProFish Audio | Visible delay | 533 ms | 328.1 ms | 1,184 | $15 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 26 | Guava Daytona TTSGuava | Visible delay | 584.8 ms | 450 ms | Not rated | Not collected | Not rated | |
| 27 |  Smallest.ai Lightning V3.1 Pro (Jul 2026)Smallest.ai | Visible delay | 703.3 ms | 360.5 ms | 1,169 | $19.5 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 28 |  Alibaba Qwen3 TTS Flash RealtimeAlibaba (Qwen) | Visible delay | 785.8 ms | 726.8 ms | Not rated | $13 | Not rated | |
| 29 |  Google Chirp 3: HDGoogle | Visible delay | 917.2 ms | 534.1 ms | 1,061 | $30 | Customer service, Assistants, Entertainment, Knowledge sharing | |
| 30 |  Deepgram Aura 2 EnDeepgram | Visible delay | 985.7 ms | 527.2 ms | Not rated | Not collected | Not rated | |
| 31 |  Fish Audio S2.1 Pro FreeFish Audio | Visible delay | 1,137.9 ms | 793.8 ms | Not rated | Not collected | Not rated |
A model is filed under a benchmark when that benchmark measures it. Some model names are matched by inference; the methodology page lists them.
Frequently asked questions
- Which Coval TTS model is the fastest?
- Fluxions vui, with a P95 time to first audio of 75 ms in Coval's 30-day window. Of the 31 models on this page, 31 are timed.
- How are these models ordered?
- As in the full ranking: speed tier, then P95 time to first audio, with ties within 10 ms ordered by median time to first audio. Models Coval does not time follow, ordered by listener Elo; models with neither measure come last, in alphabetical order.