Voice AI BenchmarksBy

PROVIDERLAST 30 DAYS

official resource

ElevenLabs voice AI models and benchmarks

ElevenLabs (Eleven Labs, 11Labs) lists 3 STT and TTS models in Coval. Fastest dated mean latency over 30 days: STT: Scribe v2 Realtime at 122 ms TTFS, with 4.4% WER. TTS: Flash v2.5 at 192 ms TTFA, with 1.8% WER. Last measured .

ElevenLabs develops speech generation and transcription APIs.

Measured models
3
STTTTS
Best STT model#10 / 29
122ms
Scribe v2 Realtime
Best TTS model#11 / 32
192ms
Flash v2.5

Overview

The provider spans STT and TTS as a first-party host, with separate models for real-time transcription, low-latency speech and conversational expression.

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

Speech-to-Text
Scribe v2 Realtime
Text-to-Speech
Flash v2.5, Eleven v4 Turbo

Speech-to-Text

Full STT dashboard

Ranked on Time to Final Segment against 29 measured models.

Time to Final Segmentms · lower is better · ElevenLabs models markedEvery measured STT model on Time to Final Segment, with ElevenLabs's models highlighted.
  1. #1Qwen3 ASR 1.7b39 ms
  2. #2STT RT v545 ms
  3. #3Qwen3 ASR Fast47 ms
  4. #4STT 167 ms
  5. #5Nova 386 ms
  6. #6Nova 287 ms
  7. #7Parakeet TDT 0.6B v397 ms
  8. #10Scribe v2 Realtime122 ms
leaders plus ElevenLabs models · 21 other models in the full table
Word Error Rate% · lower is better · ElevenLabs models markedEvery measured STT model on Word Error Rate, with ElevenLabs's models highlighted.
  1. #1Universal 3.6 Pro2.1%
  2. #2Universal 3.5 Pro2.4%
  3. #3Qwen3 ASR Fast2.6%
  4. #4resonant-12.6%
  5. #5Qwen3 ASR 1.7b2.9%
  6. #6Gemini 3.5 Transcribe Live3.0%
  7. #7Chirp 33.2%
  8. #15Scribe v2 Realtime4.4%
leaders plus ElevenLabs models · 23 other models in the full table
Time to First Tokenms · lower is better · ElevenLabs models markedEvery measured STT model on Time to First Token, with ElevenLabs's models highlighted.
  1. #1Whisper Large v3via Baseten924 ms
  2. #2Qwen3 ASR 1.7b946 ms
  3. #3Universal 3.5 Pro1026 ms
  4. #4Universal 3.6 Pro1071 ms
  5. #5Flux1091 ms
  6. #6Flux Multilingual1165 ms
  7. #7STT 11205 ms
  8. #24Scribe v2 Realtime2157 ms
leaders plus ElevenLabs models · 19 other models in the full table
TTFS vs WER — ElevenLabs vs every measured modelEach point is one measured STT model · ElevenLabs models highlighted · 30-day averagesTime to Final Segment against Word Error Rate for every measured STT model, with ElevenLabs's models highlighted.
Qwen3 ASR 1.7b — 39 ms, 2.9%STT RT v5 — 45 ms, 4.8%Qwen3 ASR Fast — 47 ms, 2.6%STT 1 — 67 ms, 7.1%Nova 3 — 86 ms, 5.3%Nova 2 — 87 ms, 6.7%Parakeet TDT 0.6B v3 — 97 ms, 11.1%Flux Multilingual — 98 ms, 7.5%Flux — 99 ms, 5.8%Whisper Large v3 via Baseten — 131 ms, 4.5%Universal 3.6 Pro — 135 ms, 2.1%Ink 2 — 149 ms, 3.6%Universal 3.5 Pro — 170 ms, 2.4%Whisper Large v3 via Together AI — 198 ms, 7.4%Pulse — 205 ms, 4.6%Grok STT — 223 ms, 4.1%resonant-1 — 252 ms, 2.6%Default — 261 ms, 8.8%Linden 1 — 274 ms, 3.9%Gemini 3.5 Transcribe Live — 317 ms, 3.0%Daytona STT — 399 ms, 4.9%Voxtral Mini Transcribe Realtime 2602 — 415 ms, 5.4%GPT Realtime Whisper — 599 ms, 4.0%Solaria 1 — 620 ms, 6.1%GPT-4o mini Transcribe — 710 ms, 3.9%Chirp 3 — 768 ms, 3.2%GPT-4o Transcribe — 784 ms, 3.8%Chirp 2 — 909 ms, 3.9%Scribe v2 Realtime — 122 ms, 4.4%
Benchmarked models with their Time to Final Segment over the last 30 days.
ModelHostTTFSRank
Scribe v2 RealtimeElevenLabs122 ms10th of 29

Text-to-Speech

Full TTS dashboard

Ranked on Time to First Audio against 32 measured models.

Time to First Audioms · lower is better · ElevenLabs models markedEvery measured TTS model on Time to First Audio, with ElevenLabs's models highlighted.
  1. #1vui59 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 TTS120 ms
  8. #11Flash v2.5192 ms
  9. #12Eleven v4 Turbo201 ms
leaders plus ElevenLabs models · 23 other models in the full table
Word Error Rate% · lower is better · ElevenLabs models markedEvery measured TTS model on Word Error Rate, with ElevenLabs's models highlighted.
  1. #1Sonic 3.61.5%
  2. #2S2.1 Pro Free1.5%
  3. #3Simba 3.01.5%
  4. #4S2.1 Pro1.5%
  5. #5Lightning v3.1 Pro1.5%
  6. #6Sonic 3.51.5%
  7. #7Chirp 3 HD1.5%
  8. #12Eleven v4 Turbo1.7%
  9. #20Flash v2.51.8%
leaders plus ElevenLabs models · 23 other models in the full table
TTFA vs WER — ElevenLabs vs every measured modelEach point is one measured TTS model · ElevenLabs models highlighted · 30-day averagesTime to First Audio against Word Error Rate for every measured TTS model, with ElevenLabs's models highlighted.
vui — 59 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 — 120 ms, 2.6%Simba 3.2 — 126 ms, 1.9%drama3-preview — 167 ms, 2.0%TTS 2 — 191 ms, 1.6%Flux TTS — 205 ms, 1.7%TTS RT v1 — 255 ms, 2.4%TTS Rt v2 — 256 ms, 2.4%Mist v3 — 287 ms, 2.1%Phantom Z 3.4 conversational — 291 ms, 1.8%Sonic 3.5 — 293 ms, 1.5%Aura 2 — 297 ms, 1.8%Sonic 3.6 — 299 ms, 1.5%Falcon 2 — 300 ms, 1.7%Coda — 332 ms, 9.5%S2.1 Pro — 341 ms, 1.5%Grok TTS — 363 ms, 1.6%S1 — 389 ms, 1.8%Lightning v3.1 Pro — 392 ms, 1.5%Daytona TTS — 486 ms, 1.6%Aura 2 En — 569 ms, 2.1%Chirp 3 HD — 597 ms, 1.5%Qwen3 TTS Flash Realtime — 718 ms, 3.0%S2.1 Pro Free — 850 ms, 1.5%GPT-4o mini TTS — 2585 ms, 1.8%Flash v2.5 — 192 ms, 1.8%Eleven v4 Turbo — 201 ms, 1.7%
Benchmarked models with their Time to First Audio over the last 30 days.
ModelHostTTFARank
Flash v2.5ElevenLabs192 ms11th of 32
Eleven v4 TurboElevenLabs201 ms12th of 32

How fast are ElevenLabs's STT and TTS models?

Scribe v2 Realtime measures mean 122 ms time to final segment (10th of 29) among STT systems. Last measured 2026-10-14. Flash v2.5 measures mean 192 ms time to first audio (11th of 32) among TTS systems. Last measured 2026-10-14. Eleven v4 Turbo measures mean 201 ms time to first audio (12th of 32) among TTS systems. Last measured 2026-10-14.

How accurate are ElevenLabs's STT and TTS models?

Scribe v2 Realtime measures 4.4% word error rate (15th of 31) among STT systems. Last measured 2026-10-14. Eleven v4 Turbo measures 1.7% word error rate (12th of 32) among TTS systems. Last measured 2026-10-14. Flash v2.5 measures 1.8% word error rate (20th of 32) among TTS systems. Last measured 2026-10-14.

Which ElevenLabs model is fastest?

Its fastest dated STT result is Scribe v2 Realtime at mean 122 ms time to final segment (10th of 29) among STT systems, with 4.4% WER. Last measured 2026-10-14. Its fastest dated TTS result is Flash v2.5 at mean 192 ms time to first audio (11th of 32) among TTS systems, with 1.8% WER. Last measured 2026-10-14.

Limits of this comparison

Coval measures Scribe on incoming audio and Eleven Flash plus Eleven v3 on fixed synthesis prompts.

  • The benchmarks do not score voice cloning similarity, subjective naturalness or every language and voice in the ElevenLabs catalogue.

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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Use Coval to test your production configuration, prompts and calls—not only the public benchmark endpoints.

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