How fast is Deepgram Aura 2 En?

Coval measures a median time to first audio of 527.2 ms and a P95 of 985.7 ms for Deepgram Aura 2 En, over 30 days from the US East in English (Visible delay tier).

How much does Deepgram Aura 2 En cost?

No benchmark prints a list price for Deepgram Aura 2 En.

Which languages was Deepgram Aura 2 En tested in?

No source tested Deepgram Aura 2 En in a language other than English.

Deepgram · Proprietary · Read 2026-10-27

Deepgram Aura 2 En: latency, voice quality, price and languages

Rank: not ranked
Speed tier: Visible delay
P95: 985.7 ms
Price / 1M chars: n/a

Deepgram Aura 2 En is a proprietary text-to-speech model from Deepgram. Coval measures a median of 527.2 ms and a P95 of 985.7 ms to first audio, which puts it in the Visible delay speed tier. It is not ranked because Coval does not tag it multilingual. No source tested it in a language other than English.

This summary is generated from the measures below; it is not a vendor description. Measures a source does not hold are shown as n/a and are never estimated.

Speed (Coval, 30 days, US East, English)

Speed tier	Visible delay
Median time to first audio	527.2 ms
P90	810.8 ms
P95	985.7 ms
Mean	547.4 ms
Standard deviation	259.9 ms
Calls in the window	2,806
Cekura median, streamed text	n/a
Cekura median, full text	n/a

Voice quality (never added together)

Listener Elo (Artificial Analysis)	n/a
Customer-service Elo (Artificial Analysis)	n/a
Naturalness (Speko)	n/a
Naturalness estimate (Cekura, 1 to 5)	n/a

Accuracy

Reading accuracy (Cekura)	n/a
Numbers (Cekura)	n/a
Codes (Cekura)	n/a
Context (Cekura)	n/a
Medical terms (Cekura)	n/a
Hard passages judged correct (Artificial Analysis)	n/a
Numbers and dates (Speko score)	n/a
Word error rate (Coval)	2.1%

Price per 1 million characters

Range across sources	n/a
Artificial Analysis	n/a
Speko	n/a
Coval	n/a
Cekura	n/a

Coverage

Access	Proprietary
Streaming	Measured
Coval tags	n/a
Rated for	n/a
Languages tested	none beyond English

Not collected

Naturalness (Speko naturalness): not measured by Speko (reading of 2026-10-27)
Listener rating (Artificial Analysis Speech Arena Elo): not measured by Artificial Analysis (reading of 2026-10-27)
Numbers and dates (Speko pronunciation score): not measured by Speko (reading of 2026-10-27)
Price (Artificial Analysis price per 1M characters): not measured by Artificial Analysis (reading of 2026-10-27)

Sources

https://benchmarks-api-6wxgp27p2a-ue.a.run.app/v1/results/aggregates?benchmark=TTS&window=30d&include_series=false (read 2026-10-27)
Vendor site: https://deepgram.com/

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Frequently asked questions

How fast is Deepgram Aura 2 En?: Coval measures a median time to first audio of 527.2 ms and a P95 of 985.7 ms for Deepgram Aura 2 En, over 30 days from the US East in English (Visible delay tier).
How much does Deepgram Aura 2 En cost?: No benchmark prints a list price for Deepgram Aura 2 En.
Which languages was Deepgram Aura 2 En tested in?: No source tested Deepgram Aura 2 En in a language other than English.