CekuraBench

ElevenLabs v4vsGPT-4o mini TTS

ElevenLabs v4GPT-4o mini TTS
Compare

Speed and accuracy

Left is faster. Higher reads more hard parts right.

Fast and accurate60%70%80%90%100%00.5s1s1.5s2sTime until the caller hears the voice
  • ElevenLabs v4678 ms · 80.4%
  • GPT-4o mini TTS688 ms · 82.7%

ElevenLabs v4 is better on non-streaming latency and streaming latency. GPT-4o mini TTS is better on accuracy, naturalness and price.

Last updated Methodology by Dileep Chagam

Which is better at what

Measure by measure, the same sentences, the same place.

MeasureElevenLabs v4GPT-4o mini TTS
  • Non-streaming latency (median)ElevenLabs v4 is better678 ms688 ms
  • Streaming latency (median)ElevenLabs v4 is better561 msCan't stream
  • Extra audio after a stopFinishes firstNo stop message
  • Hard parts read rightGPT-4o mini TTS is better80.4%82.7%
  • Naturalness (1 to 5)GPT-4o mini TTS is better4.424.43
  • Price per 1M charactersGPT-4o mini TTS is better$80.00$25.70
Hard parts read rightElevenLabs v4GPT-4o mini TTS
  • Numbers and shorthand7 a.m. · 20% · 36°F · approx.72%78%
  • Codes and addressesSAVE20 · help@north-clinic.org · 1-800-555-019983%78%
  • Read from contextSt. Mary's on Main St. · Dr. Okafor88%96%
  • Medical termslevothyroxine · gastroenterology100%94%

An estimate: speech-to-text transcribers scored it, not people.

Hear both

The same sentence, read by each voice.

19 sentences, the same for both
  1. 01A greetingThanks for calling Cedar Valley Family Practice, this is Riley. How can I help you today?
  2. 02MoneyYour current balance is $1,347.09.
  3. 03A dateThe order was placed on 2026-03-14 and shipped two days later.
  4. 04Tracking codeThe tracking number is 1Z 7A4 X29 0341 8867.
  5. 05Email addressI have m.rivera88@example.org, is that still current?
  6. 06An Irish nameSiobhan Ó Briain called about the invoice.

How each ranks among all 26

MeasureElevenLabs v4GPT-4o mini TTS
  • Non-streaming latency (median)20 of 2621 of 26
  • Streaming latency (median)17 of 18n/a
  • Extra audio after a stopn/an/a
  • Hard parts read right15 of 2612 of 26
  • Naturalness (1 to 5)9 of 267 of 26
  • Price per 1M characters23 of 2511 of 25

Related comparisons

ElevenLabs v4 vs GPT-4o mini TTS FAQ

  • ElevenLabs v4. ElevenLabs v4: 678 ms. GPT-4o mini TTS: 688 ms.

  • ElevenLabs v4. ElevenLabs v4: 561 ms. GPT-4o mini TTS: Can't stream.

  • Neither has a figure. ElevenLabs v4: Finishes first. GPT-4o mini TTS: No stop message.

  • GPT-4o mini TTS. ElevenLabs v4: 80.4%. GPT-4o mini TTS: 82.7%.

  • GPT-4o mini TTS. ElevenLabs v4: $80.00. GPT-4o mini TTS: $25.70.