CekuraBench

ElevenLabs Flash v2.5vsDeepgram Flux

ElevenLabs Flash v2.5Deepgram Flux
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 Flash v2.5182 ms · 64.4%
  • Deepgram Flux194 ms · 77.4%

ElevenLabs Flash v2.5 is better on non-streaming latency, naturalness and price. Deepgram Flux is better on streaming latency, stopping and accuracy.

Last updated Methodology by Dileep Chagam

Which is better at what

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

MeasureElevenLabs Flash v2.5Deepgram Flux
  • Non-streaming latency (median)ElevenLabs Flash v2.5 is better182 ms194 ms
  • Streaming latency (median)Deepgram Flux is better177 ms154 ms
  • Extra audio after a stopDeepgram Flux is betterFinishes first80 ms
  • Hard parts read rightDeepgram Flux is better64.4%77.4%
  • Naturalness (1 to 5)ElevenLabs Flash v2.5 is better4.334.16
  • Price per 1M charactersElevenLabs Flash v2.5 is better$40.00$45.00
Hard parts read rightElevenLabs Flash v2.5Deepgram Flux
  • Numbers and shorthand7 a.m. · 20% · 36°F · approx.55%72%
  • Codes and addressesSAVE20 · help@north-clinic.org · 1-800-555-019955%81%
  • Read from contextSt. Mary's on Main St. · Dr. Okafor75%69%
  • Medical termslevothyroxine · gastroenterology100%97%

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 Flash v2.5Deepgram Flux
  • Non-streaming latency (median)5 of 266 of 26
  • Streaming latency (median)8 of 186 of 18
  • Extra audio after a stopn/a4 of 6
  • Hard parts read right26 of 2619 of 26
  • Naturalness (1 to 5)21 of 2626 of 26
  • Price per 1M characters18 of 2521 of 25

Related comparisons

ElevenLabs Flash v2.5 vs Deepgram Flux FAQ

  • ElevenLabs Flash v2.5. ElevenLabs Flash v2.5: 182 ms. Deepgram Flux: 194 ms.

  • Deepgram Flux. ElevenLabs Flash v2.5: 177 ms. Deepgram Flux: 154 ms.

  • Deepgram Flux. ElevenLabs Flash v2.5: Finishes first. Deepgram Flux: 80 ms.

  • Deepgram Flux. ElevenLabs Flash v2.5: 64.4%. Deepgram Flux: 77.4%.

  • ElevenLabs Flash v2.5. ElevenLabs Flash v2.5: $40.00. Deepgram Flux: $45.00.