Gemini 3.8 Flash TTS: batch and flex $4.50, priority $16.20 per 1M

Google bills Gemini 3.8 Flash TTS at $9.00 per 1M audio tokens on the Standard tier until December 31, 2026. Batch and Flex are half of that at $4.50, and Priority is $16.20. On January 1, 2027 all four double. With 25 audio tokens per second, 1,000 minutes of speech is 1.5M tokens, which is $13.50 on Standard before the doubling.

Four tiers, 1,000 minutes of audio

The cost below is output audio only, from the pricing page's per-million rates. Input text tokens are billed separately, at $0.25 to $0.90 per 1M through 2026 depending on the tier.

Which tier to pick

• Batch: audiobooks and back catalogues that nobody is waiting for. Google lists it with no free tier.
• Flex: the same price as batch. Google's page does not describe the turnaround in the pricing table, so read the Flex guide before you rely on it for anything interactive.
• Standard: normal app traffic.
• Priority: only where latency or reliability earns a 80% premium over Standard.

What about Lite

gemini-3.8-flash-lite-tts is cheaper on every tier: $6 Standard, $3 batch and flex, and $10.80 priority per 1M tokens until the year ends. If the voice quality suffices, Lite narration on Standard costs $0.009 per minute through 2026.