List prices
| Input | Text | $1 / 1M tok |
| Output | Audio | $20 / 1M tok |
Audio tokens correspond to 25 tokens per second of audio.
Estimate your monthly cost
Based on Gemini 3.1 Flash TTS's current list prices. You pay your provider directly - Vevee meters this usage against your own plans.
Frequently asked questions
How much does Gemini 3.1 Flash TTS cost?
Gemini 3.1 Flash TTS costs $1 per 1 million input tokens and $20 per 1 million output tokens. These are Google's list rates for the Text tier.
How much does a typical Gemini 3.1 Flash TTS request cost?
A request with 1,500 input tokens and 500 output tokens costs about $0.011. At 1,000 such requests a month that is roughly $11.50.
How many Gemini 3.1 Flash TTS tokens do I get for $10?
$10 buys roughly 10 million input tokens or 0.5 million output tokens at list price.
How do I track Gemini 3.1 Flash TTS costs per end user?
Use a metering layer. With Vevee you call track() or reserve()/commit() around each Gemini 3.1 Flash TTS request with the end user's ID, define plan limits in the dashboard, and Vevee enforces them and shows per-user usage and cost - no backend to build.
Track Gemini 3.1 Flash TTS spend per user
Knowing the list price is half the problem - the other half is knowing which of your users consume it and stopping the ones who blow past their plan. Vevee meters every Gemini 3.1 Flash TTS call per end user, enforces your plan limits, and shows you per-user cost. Free tier, no card.