CekuraBench

Deepgram Aura-2vsDeepgram Flux

Deepgram Aura-2Deepgram Flux
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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
  • Deepgram Aura-2281 ms · 77.2%
  • Deepgram Flux194 ms · 77.4%

Deepgram Aura-2 is better on streaming latency, stopping, naturalness and price. Deepgram Flux is better on non-streaming latency and accuracy.

Last updated Methodology by Dileep Chagam

Which is better at what

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

MeasureDeepgram Aura-2Deepgram Flux
  • Non-streaming latency (median)Deepgram Flux is better281 ms194 ms
  • Streaming latency (median)Deepgram Aura-2 is better126 ms154 ms
  • Extra audio after a stopDeepgram Aura-2 is better40 ms80 ms
  • Hard parts read rightDeepgram Flux is better77.2%77.4%
  • Naturalness (1 to 5)Deepgram Aura-2 is better4.434.16
  • Price per 1M charactersDeepgram Aura-2 is better$30.00$45.00
Hard parts read rightDeepgram Aura-2Deepgram Flux
  • Numbers and shorthand7 a.m. · 20% · 36°F · approx.71%72%
  • Codes and addressesSAVE20 · help@north-clinic.org · 1-800-555-019987%81%
  • Read from contextSt. Mary's on Main St. · Dr. Okafor75%69%
  • Medical termslevothyroxine · gastroenterology86%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

MeasureDeepgram Aura-2Deepgram Flux
  • Non-streaming latency (median)9 of 266 of 26
  • Streaming latency (median)4 of 186 of 18
  • Extra audio after a stop3 of 64 of 6
  • Hard parts read right20 of 2619 of 26
  • Naturalness (1 to 5)8 of 2626 of 26
  • Price per 1M characters13 of 2521 of 25

Related comparisons

Deepgram Aura-2 vs Deepgram Flux FAQ

  • Deepgram Flux. Deepgram Aura-2: 281 ms. Deepgram Flux: 194 ms.

  • Deepgram Aura-2. Deepgram Aura-2: 126 ms. Deepgram Flux: 154 ms.

  • Deepgram Aura-2. Deepgram Aura-2: 40 ms. Deepgram Flux: 80 ms.

  • Deepgram Flux. Deepgram Aura-2: 77.2%. Deepgram Flux: 77.4%.

  • Deepgram Aura-2. Deepgram Aura-2: $30.00. Deepgram Flux: $45.00.