Voice AI BenchmarksBy

PROVIDERLAST 30 DAYS

Deepdub voice AI models and benchmarks

Coval measures voice models created or hosted by Deepdub.

Measured models
1
TTS
Best TTS model#10 / 26
302ms
Phantom Z 3.4 conversational

Overview

Every model below is measured daily on the same fixed inputs and ranked against the full field, never blended into a company score.

Model lineup

Text-to-Speech
Phantom Z 3.4 conversational

Text-to-Speech

Full TTS dashboard

Ranked on Time to First Audio against 26 measured models.

Time to First Audioms · lower is better · Deepdub models markedEvery measured TTS model on Time to First Audio, with Deepdub's models highlighted.
  1. #1vui110 ms
  2. #2Palabra TTS v1116 ms
  3. #3TTS Flash 2118 ms
  4. #4TTS 2176 ms
  5. #5Default236 ms
  6. #6Mist v3257 ms
  7. #7TTS Rt v2258 ms
  8. #10Phantom Z 3.4 conversational302 ms
leaders plus Deepdub models · 18 other models in the full table
Word Error Rate% · lower is better · Deepdub models markedEvery measured TTS model on Word Error Rate, with Deepdub's models highlighted.
  1. #1TTS RT v13.7%
  2. #2TTS Rt v23.9%
  3. #3Eleven v3 Conversational4.3%
  4. #4Lightning v3.1 Pro4.3%
  5. #5Simba 3.24.4%
  6. #6S2.1 Pro4.6%
  7. #7S2.1 Pro Free4.6%
  8. #23Phantom Z 3.4 conversational6.3%
leaders plus Deepdub models · 18 other models in the full table
TTFA vs WER — Deepdub vs every measured modelEach point is one measured TTS model · Deepdub models highlighted · 30-day averagesTime to First Audio against Word Error Rate for every measured TTS model, with Deepdub's models highlighted.
vui — 110 ms, 7.4%Palabra TTS v1 — 116 ms, 5.8%TTS Flash 2 — 118 ms, 5.0%TTS 2 — 176 ms, 4.7%Default — 236 ms, 5.2%Mist v3 — 257 ms, 6.0%TTS Rt v2 — 258 ms, 3.9%TTS RT v1 — 264 ms, 3.7%Sonic 3.5 — 274 ms, 6.0%Coda — 319 ms, 5.1%Aura 2 — 322 ms, 5.2%Flash v2.5 — 358 ms, 6.6%S2.1 Pro — 364 ms, 4.6%Eleven v3 Conversational — 397 ms, 4.3%Grok TTS — 417 ms, 4.7%S1 — 421 ms, 4.9%Simba 3.2 — 447 ms, 4.4%Lightning v3.1 Pro — 465 ms, 4.3%Sonic 3.6 — 465 ms, 5.0%Simba 3.0 — 469 ms, 5.2%Chirp 3 HD — 518 ms, 5.1%Falcon 2 — 549 ms, 5.2%Qwen3 TTS Flash Realtime — 683 ms, 8.8%S2.1 Pro Free — 902 ms, 4.6%GPT-4o mini TTS — 1034 ms, 4.7%Phantom Z 3.4 conversational — 302 ms, 6.3%
Benchmarked models with their Time to First Audio over the last 30 days.
ModelHostTTFARank
Phantom Z 3.4 conversationalDeepdub302 ms10th of 26

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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