Voice AI BenchmarksBy

ALIBABATEXT-TO-SPEECH7,578 SAMPLES / 30 DAYSLAST RUN OCT 14, 2026, 10:30 UTC

official resource

Qwen3 TTS Flash Realtime text-to-speech benchmarks

Qwen3 TTS Flash Realtime, hosted by Alibaba, measures mean 718 ms time to first audio (30th of 32) and 3.0% word error rate (31st of 32) among TTS systems. Results cover the last 30 days. Coval benchmarks hosted endpoints daily using a consistent evaluation methodology. Last measured .

Qwen3 TTS Flash Realtime is Alibaba Cloud's streaming synthesis endpoint in the Qwen family.

Time to First Audio#30 / 32
718ms
TTFA Network Roundtrip#30 / 32
626ms
TTFA Leading Silence#21 / 32
92ms
Word Error Rate#31 / 32
3%

Overview

Alibaba serves the multilingual proprietary endpoint through Model Studio from an Asia-region deployment.

Qwen3 TTS Flash Realtime is tested every day on a fixed set of text prompts, measuring how quickly audible speech starts and how intelligible the result is.

Technical specifications

Made by
Alibaba
Hosted by
Alibaba
Source
Official API
Licensing
Proprietary
Deployment
Cloud
Region
Asia
Features
Multilingual

How Qwen3 TTS Flash Realtime ranks

Full TTS dashboard
Time to First Audio — every measured TTS modelMilliseconds · lower is better · 30-day averageEvery TTS model ranked on Time to First Audio, with Qwen3 TTS Flash Realtime highlighted.
  1. #1vui60 ms
  2. #2Default63 ms
  3. #3Qwen3 TTS Fast68 ms
  4. #4TTS Flash 291 ms
  5. #5Qwen3 TTS 1.7b107 ms
  6. #6Simba 3.0111 ms
  7. #7Palabra TTS v1120 ms
  8. #8Simba 3.2126 ms
  9. #9drama3-preview169 ms
  10. #10TTS 2191 ms
  11. #11Flash v2.5191 ms
  12. #12Eleven v4 Turbo201 ms
  13. #13Flux TTS205 ms
  14. #14TTS RT v1254 ms
  15. #15TTS Rt v2256 ms
  16. #16Mist v3287 ms
  17. #17Sonic 3.5293 ms
  18. #18Phantom Z 3.4 conversational293 ms
  19. #19Aura 2297 ms
  20. #20Sonic 3.6299 ms
  21. #21Falcon 2301 ms
  22. #22Coda332 ms
  23. #23S2.1 Pro341 ms
  24. #24Grok TTS362 ms
  25. #25S1389 ms
  26. #26Lightning v3.1 Pro393 ms
  27. #27Daytona TTS486 ms
  28. #28Aura 2 En570 ms
  29. #29Chirp 3 HD597 ms
  30. #30Qwen3 TTS Flash Realtime718 ms
Show all 32 models
  1. #31S2.1 Pro Free850 ms
  2. #32GPT-4o mini TTS2581 ms
median of all models · 290 ms
TTS models over the last 30 days, ranked on Time to First Audio.
#ModelHostTTFAWERSamples
1vuiFluxions60 ms1,724
2Gradium TTS Beta 202609Gradium63 ms1,896
3Qwen3 TTS FastNari Labs68 ms1,896
4TTS Flash 2Inworld AI91 ms1,700
5Qwen3 TTS 1.7bBaseten107 ms1,248
6Simba 3.0SpeechifyAI111 ms1,895
7Palabra TTS v1Palabra120 ms1,558
8Simba 3.2SpeechifyAI126 ms1,892
9Drama 3 Preview Us EastFish Audio169 ms142
10TTS 2Inworld AI191 ms1,700
11Flash v2.5ElevenLabs191 ms1,887
12Eleven v4 TurboElevenLabs201 ms1,206
13Flux TTSDeepgram205 ms1,759
14TTS RT v1Soniox254 ms1,599
15TTS Rt v2Soniox256 ms1,597
16Mist v3Rime287 ms602
17Sonic 3.5Cartesia293 ms1,896
18Phantom Z 3.4 conversationalDeepdub293 ms1,631
19Aura 2Deepgram297 ms1,828
20Sonic 3.6Cartesia299 ms1,896
21Falcon 2Murf301 ms1,895
22CodaRime332 ms602
23S2.1 ProFish Audio341 ms1,896
24Grok TTSSpaceXAI362 ms1,891
25S1Fish Audio389 ms1,895
26Lightning v3.1 ProSmallest393 ms1,896
27Daytona TTSGuava486 ms1,152
28Aura 2 EnCloudflare570 ms1,895
29Chirp 3 HDGoogle597 ms1,896
30Qwen3 TTS Flash RealtimeAlibaba718 ms1,895
31S2.1 Pro FreeFish Audio850 ms1,889
32GPT-4o mini TTSOpenAI2581 ms1,832
Under-sampled models are excluded; tied models share a place. Dotted WER values split into substitutions, deletions and insertions on hover or tap.

Latency vs accuracy

TTFA vs WEREach point is one measured model · Qwen3 TTS Flash Realtime highlighted · 30-day averagesTime to First Audio against Word Error Rate for every measured TTS model, with Qwen3 TTS Flash Realtime highlighted.
vui — 60 ms, 2.1%Default — 63 ms, 1.9%Qwen3 TTS Fast — 68 ms, 1.8%TTS Flash 2 — 91 ms, 1.7%Qwen3 TTS 1.7b — 107 ms, 1.8%Simba 3.0 — 111 ms, 1.5%Palabra TTS v1 — 120 ms, 2.6%Simba 3.2 — 126 ms, 1.9%drama3-preview — 169 ms, 2.0%TTS 2 — 191 ms, 1.6%Flash v2.5 — 191 ms, 1.8%Eleven v4 Turbo — 201 ms, 1.7%Flux TTS — 205 ms, 1.7%TTS RT v1 — 254 ms, 2.4%TTS Rt v2 — 256 ms, 2.4%Mist v3 — 287 ms, 2.1%Sonic 3.5 — 293 ms, 1.5%Phantom Z 3.4 conversational — 293 ms, 1.8%Aura 2 — 297 ms, 1.8%Sonic 3.6 — 299 ms, 1.5%Falcon 2 — 301 ms, 1.7%Coda — 332 ms, 9.5%S2.1 Pro — 341 ms, 1.5%Grok TTS — 362 ms, 1.6%S1 — 389 ms, 1.8%Lightning v3.1 Pro — 393 ms, 1.5%Daytona TTS — 486 ms, 1.6%Aura 2 En — 570 ms, 2.1%Chirp 3 HD — 597 ms, 1.5%S2.1 Pro Free — 850 ms, 1.5%GPT-4o mini TTS — 2581 ms, 1.8%Qwen3 TTS Flash Realtime — 718 ms, 3.0%

Where the errors come from

WER compositionQwen3 TTS Flash Realtime's Word Error Rate split by error type · 30-day averageQwen3 TTS Flash Realtime's WER split into substitutions, deletions and insertions.
  • Qwen3 TTS Flash Realtime3.0%
SubstitutionsDeletionsInsertions

Averages and tail latency

Averages hide slow outliers — these are the distributions behind each figure.

Qwen3 TTS Flash Realtime latency distributionMilliseconds · shared axis across metrics · last 30 daysQwen3 TTS Flash Realtime's latency percentiles per metric: p25–p75 band, p50 tick, whisker to max.
  • Time to First Audiop50 730 ms · Max 1174 ms
  • TTFA Network Roundtripp50 640 ms · Max 971 ms
  • TTFA Leading Silencep50 90 ms · Max 495 ms
band p25–p75 · tick p50 · whisker to max with p90 and p95 stops
Average and percentile values per metric, with the number of samples behind each row.
MetricAveragep25p50p75p90p95MaxSamples
Time to First Audio718 ms708 ms730 ms752 ms775 ms789 ms1174 ms1,895
TTFA Network Roundtrip626 ms618 ms640 ms660 ms682 ms697 ms971 ms1,895
TTFA Leading Silence92 ms86 ms90 ms94 ms99 ms104 ms495 ms1,895
Word Error Rate3.0%0.0%0.5%6.3%14.3%20.0%150.0%1,893

Last 30 days

Daily medians from the same measurement runs · gaps are days without qualifying runs.

Time to First Audio — daily p50Line p50 · band p25–p75 · UTC daysQwen3 TTS Flash Realtime's daily median Time to First Audio over the last 30 days.
Qwen3 TTS Flash Realtime · Sep 23: 519 msQwen3 TTS Flash Realtime · Sep 24: 616 msQwen3 TTS Flash Realtime · Sep 25: 624 msQwen3 TTS Flash Realtime · Sep 26: 669 msQwen3 TTS Flash Realtime · Sep 27: 656 msQwen3 TTS Flash Realtime · Sep 28: 771 msQwen3 TTS Flash Realtime · Sep 29: 759 msQwen3 TTS Flash Realtime · Sep 30: 744 msQwen3 TTS Flash Realtime · Oct 1: 736 msQwen3 TTS Flash Realtime · Oct 2: 746 msQwen3 TTS Flash Realtime · Oct 3: 740 msQwen3 TTS Flash Realtime · Oct 4: 740 msQwen3 TTS Flash Realtime · Oct 5: 738 msQwen3 TTS Flash Realtime · Oct 6: 734 msQwen3 TTS Flash Realtime · Oct 7: 729 msQwen3 TTS Flash Realtime · Oct 8: 724 msQwen3 TTS Flash Realtime · Oct 9: 728 msQwen3 TTS Flash Realtime · Oct 10: 730 msQwen3 TTS Flash Realtime · Oct 11: 733 msQwen3 TTS Flash Realtime · Oct 12: 729 msQwen3 TTS Flash Realtime · Oct 13: 732 msQwen3 TTS Flash Realtime · Oct 14: 714 ms
Word Error Rate — daily averageDaily average · UTC daysQwen3 TTS Flash Realtime's daily Word Error Rate over the last 30 days.
Qwen3 TTS Flash Realtime · Sep 23: 9.7%Qwen3 TTS Flash Realtime · Sep 24: 11.2%Qwen3 TTS Flash Realtime · Sep 25: 8.2%Qwen3 TTS Flash Realtime · Sep 26: 4.8%Qwen3 TTS Flash Realtime · Sep 27: 8.4%Qwen3 TTS Flash Realtime · Sep 28: 6.4%Qwen3 TTS Flash Realtime · Sep 29: 12.4%Qwen3 TTS Flash Realtime · Sep 30: 5.7%Qwen3 TTS Flash Realtime · Oct 1: 10.7%Qwen3 TTS Flash Realtime · Oct 2: 10.8%Qwen3 TTS Flash Realtime · Oct 3: 5.6%Qwen3 TTS Flash Realtime · Oct 4: 8.5%Qwen3 TTS Flash Realtime · Oct 5: 4.5%Qwen3 TTS Flash Realtime · Oct 6: 6.1%Qwen3 TTS Flash Realtime · Oct 7: 6.1%Qwen3 TTS Flash Realtime · Oct 8: 9.4%Qwen3 TTS Flash Realtime · Oct 9: 6.3%Qwen3 TTS Flash Realtime · Oct 10: 2.7%Qwen3 TTS Flash Realtime · Oct 11: 5.1%Qwen3 TTS Flash Realtime · Oct 12: 9.3%Qwen3 TTS Flash Realtime · Oct 13: 8.8%Qwen3 TTS Flash Realtime · Oct 14: 10.6%

How fast is Qwen3 TTS Flash Realtime?

On Alibaba, Qwen3 TTS Flash Realtime measures mean 718 ms time to first audio (30th of 32). Last measured 2026-10-14.

How accurate is Qwen3 TTS Flash Realtime?

On Alibaba, Qwen3 TTS Flash Realtime measures 3.0% word error rate (31st of 32). Last measured 2026-10-14.

Who hosts Qwen3 TTS Flash Realtime?

Qwen3 TTS Flash Realtime is created by Alibaba and served by Alibaba. Coval measures each hosted endpoint separately.

Limits of this comparison

The full identifier distinguishes this real-time configuration from other Qwen audio models.

  • Serving region contributes to roundtrip from Coval's US worker, so latency may differ for callers colocated in Asia. Coval separates network roundtrip from leading silence when those measurements are available.

Official sources

Results are re-measured daily using fixed datasets and reported over a rolling 30-day window. Same datasets, prompts and metric definitions for every model, measured by Coval’s open-source runner. Full methodology on the overview.

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