How fast is Google Gemini 2.5 Flash TTS (Dec 2025)?

Coval does not measure Google Gemini 2.5 Flash TTS (Dec 2025), so no latency is published here.

How much does Google Gemini 2.5 Flash TTS (Dec 2025) cost?

The benchmarks print a list price of $9.20 per million characters for Google Gemini 2.5 Flash TTS (Dec 2025).

Which languages was Google Gemini 2.5 Flash TTS (Dec 2025) tested in?

No source tested Google Gemini 2.5 Flash TTS (Dec 2025) in a language other than English.

Google · Proprietary · Read 2026-10-27

Google Gemini 2.5 Flash TTS (Dec 2025): latency, voice quality, price and languages

Rank: not ranked
Speed tier: n/a
P95: n/a
Price / 1M chars: $9.20

Google Gemini 2.5 Flash TTS (Dec 2025) is a proprietary text-to-speech model from Google. Coval does not measure its latency, so it has no speed tier and no rank. 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	n/a
Median time to first audio	n/a
P90	n/a
P95	n/a
Mean	n/a
Standard deviation	n/a
Calls in the window	n/a
Cekura median, streamed text	n/a
Cekura median, full text	n/a

Voice quality (never added together)

Listener Elo (Artificial Analysis)	1,067 ±12
Customer-service Elo (Artificial Analysis)	1,139 ±27
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)	n/a

Price per 1 million characters

Range across sources	$9.20
Artificial Analysis	$9.20
Speko	n/a
Coval	n/a
Cekura	n/a

Coverage

Access	Proprietary
Streaming	Vendor documentation
Coval tags	n/a
Rated for	Knowledge sharing, Assistants, Entertainment, Customer service
Languages tested	none beyond English

Not collected

Speed (Coval median time to first audio): not measured by Coval (reading of 2026-10-27, 30-day window)
Speed (Coval P95 time to first audio): not measured by Coval (reading of 2026-10-27, 30-day window)
Naturalness (Speko naturalness): not measured by Speko (reading of 2026-10-27)
Numbers and dates (Speko pronunciation score): not measured by Speko (reading of 2026-10-27)

Sources

https://artificialanalysis.ai/text-to-speech/leaderboard/provider-voice (read 2026-10-27)
Vendor site: https://cloud.google.com/text-to-speech

Keep exploring

Frequently asked questions

How fast is Google Gemini 2.5 Flash TTS (Dec 2025)?: Coval does not measure Google Gemini 2.5 Flash TTS (Dec 2025), so no latency is published here.
How much does Google Gemini 2.5 Flash TTS (Dec 2025) cost?: The benchmarks print a list price of $9.20 per million characters for Google Gemini 2.5 Flash TTS (Dec 2025).
Which languages was Google Gemini 2.5 Flash TTS (Dec 2025) tested in?: No source tested Google Gemini 2.5 Flash TTS (Dec 2025) in a language other than English.