Voice AI BenchmarksBy

PROVIDERLAST 30 DAYS

official resource

Palabra AI voice AI models and benchmarks

Palabra AI develops speech translation and generation services.

Measured models
1
TTS
Best TTS model#1 / 30
116ms
Palabra TTS v1

Overview

The tested model is multilingual and supports voice cloning plus an on-premises deployment option.

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
Palabra TTS v1

Text-to-Speech

Full TTS dashboard

Ranked on Time to First Audio against 30 measured models.

Time to First Audioms · lower is better · Palabra AI models markedEvery measured TTS model on Time to First Audio, with Palabra AI's models highlighted.
  1. #1Palabra TTS v1116 ms
  2. #2vui124 ms
  3. #3TTS Flash 2128 ms
  4. #4TTS 2176 ms
  5. #5Blizzard235 ms
  6. #6Neural236 ms
  7. #7Mist v3256 ms
leaders plus Palabra AI models · 23 other models in the full table
Word Error Rate% · lower is better · Palabra AI models markedEvery measured TTS model on Word Error Rate, with Palabra AI's models highlighted.
  1. #1TTS RT v13.7%
  2. #2TTS Rt v23.9%
  3. #3Neural4.3%
  4. #4Eleven v3 Conversational4.4%
  5. #5Lightning v3.1 Pro4.4%
  6. #6Default4.6%
  7. #7S2.1 Pro4.6%
  8. #24Palabra TTS v15.9%
leaders plus Palabra AI models · 22 other models in the full table
TTFA vs WER — Palabra AI vs every measured modelEach point is one measured TTS model · Palabra AI models highlighted · 30-day averagesTime to First Audio against Word Error Rate for every measured TTS model, with Palabra AI's models highlighted.
vui — 124 ms, 7.9%TTS Flash 2 — 128 ms, 4.9%TTS 2 — 176 ms, 4.8%Blizzard — 235 ms, 7.4%Neural — 236 ms, 4.3%Mist v3 — 256 ms, 6.3%TTS Rt v2 — 262 ms, 3.9%Sonic 3.5 — 274 ms, 6.1%TTS RT v1 — 275 ms, 3.7%Dragon HD Latest — 310 ms, 5.1%Coda — 313 ms, 5.2%Aura 2 — 328 ms, 5.3%S2.1 Pro — 374 ms, 4.6%Default — 384 ms, 4.6%Speech 2.8 Turbo — 411 ms, 4.8%Eleven v3 Conversational — 412 ms, 4.4%Grok TTS — 420 ms, 4.7%S1 — 434 ms, 4.9%Flash v2.5 — 455 ms, 6.7%Speech 2.8 HD — 460 ms, 4.7%Sonic 3.6 — 466 ms, 5.5%Simba 3.2 — 484 ms, 4.7%Chirp 3 HD — 512 ms, 5.2%Simba 3.0 — 526 ms, 5.3%Falcon 2 — 549 ms, 5.2%Lightning v3.1 Pro — 586 ms, 4.4%Qwen3 TTS Flash Realtime — 645 ms, 8.8%S2.1 Pro Free — 806 ms, 4.7%GPT-4o mini TTS — 1075 ms, 4.8%Palabra TTS v1 — 116 ms, 5.9%
Benchmarked models with their Time to First Audio over the last 30 days.
ModelHostTTFARank
Palabra TTS v1Palabra116 ms1st of 30

Limits of this comparison

Coval measures Palabra TTS v1 through Palabra's first-party synthesis endpoint.

  • Translation and dubbing quality are not part of the TTS latency and intelligibility metrics shown here.

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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