Voice AI BenchmarksBy

PROVIDERLAST 30 DAYS

official resource

Speechify voice AI models and benchmarks

Speechify lists 2 TTS models in Coval. Its fastest dated TTS result is Simba 3.2 at mean 452 ms time to first audio (22nd of 28) among TTS systems, with 4.4% WER. Results cover the last 30 days. Last measured .

Speechify provides text-to-speech APIs and voice products.

Measured models
2
TTS
Best TTS model#22 / 28
452ms
Simba 3.2

Overview

Speechify's Simba line is versioned, with 3.0 and 3.2 both live for side-by-side comparison.

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
Simba 3.2, Simba 3.0

Text-to-Speech

Full TTS dashboard

Ranked on Time to First Audio against 28 measured models.

Time to First Audioms · lower is better · Speechify models markedEvery measured TTS model on Time to First Audio, with Speechify's models highlighted.
  1. #1vui66 ms
  2. #2Qwen3 TTS Fast71 ms
  3. #3TTS Flash 291 ms
  4. #4Qwen3 TTS 1.7b106 ms
  5. #5Palabra TTS v1115 ms
  6. #6TTS 2181 ms
  7. #7Flash v2.5194 ms
  8. #22Simba 3.2452 ms
  9. #23Simba 3.0471 ms
leaders plus Speechify models · 19 other models in the full table
Word Error Rate% · lower is better · Speechify models markedEvery measured TTS model on Word Error Rate, with Speechify's models highlighted.
  1. #1TTS RT v13.9%
  2. #2TTS Rt v24.2%
  3. #3Qwen3 TTS Fast4.2%
  4. #4Eleven v3 Conversational4.4%
  5. #5Lightning v3.1 Pro4.4%
  6. #6Simba 3.24.4%
  7. #7TTS 24.6%
  8. #16Simba 3.05.2%
leaders plus Speechify models · 20 other models in the full table
TTFA vs WER — Speechify vs every measured modelEach point is one measured TTS model · Speechify models highlighted · 30-day averagesTime to First Audio against Word Error Rate for every measured TTS model, with Speechify's models highlighted.
vui — 66 ms, 5.5%Qwen3 TTS Fast — 71 ms, 4.2%TTS Flash 2 — 91 ms, 5.4%Qwen3 TTS 1.7b — 106 ms, 5.5%Palabra TTS v1 — 115 ms, 5.8%TTS 2 — 181 ms, 4.6%Flash v2.5 — 194 ms, 6.7%Default — 235 ms, 5.3%TTS Rt v2 — 245 ms, 4.2%TTS RT v1 — 245 ms, 3.9%Mist v3 — 258 ms, 5.6%Sonic 3.5 — 276 ms, 5.9%Phantom Z 3.4 conversational — 286 ms, 6.0%Aura 2 — 308 ms, 5.2%Coda — 312 ms, 5.0%S2.1 Pro — 335 ms, 4.8%Eleven v3 Conversational — 348 ms, 4.4%Lightning v3.1 Pro — 362 ms, 4.4%S1 — 379 ms, 4.9%Grok TTS — 397 ms, 4.9%Sonic 3.6 — 423 ms, 5.3%Chirp 3 HD — 535 ms, 5.2%Falcon 2 — 545 ms, 5.2%Qwen3 TTS Flash Realtime — 754 ms, 8.9%S2.1 Pro Free — 965 ms, 4.7%GPT-4o mini TTS — 1013 ms, 4.8%Simba 3.2 — 452 ms, 4.4%Simba 3.0 — 471 ms, 5.2%
Benchmarked models with their Time to First Audio over the last 30 days.
ModelHostTTFARank
Simba 3.2Speechify452 ms22nd of 28
Simba 3.0Speechify471 ms23rd of 28

How fast are Speechify's TTS models?

Simba 3.2 measures mean 452 ms time to first audio (22nd of 28) among TTS systems. Last measured 2026-09-15. Simba 3.0 measures mean 471 ms time to first audio (23rd of 28) among TTS systems. Last measured 2026-09-15.

How accurate are Speechify's TTS models?

Simba 3.2 measures 4.4% word error rate (6th of 28) among TTS systems. Last measured 2026-09-15. Simba 3.0 measures 5.2% word error rate (16th of 28) among TTS systems. Last measured 2026-09-15.

Which Speechify model is fastest?

Its fastest dated TTS result is Simba 3.2 at mean 452 ms time to first audio (22nd of 28) among TTS systems, with 4.4% WER. Last measured 2026-09-15.

Limits of this comparison

Coval measures Simba 3.0 and Simba 3.2 as distinct first-party synthesis versions.

  • The benchmark does not rate voice preference, cloning fidelity or Speechify's consumer reading applications.

Official resources

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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