Gemini 2.5 Flash Preview TTS
API ID gemini-2.5-flash-preview-tts
gemini-2.5-flash-preview-tts is a preview Google model. It has a 8,192-token context window and up to 16,384 output tokens. Standard price: $0.50 input and $10.00 output per 1M tokens.
Gemini 2.5 Flash Preview TTS
- Status
- Deprecated
- Released
- —
- Shutdown
- Nov 17, 2026 at the earliest
- Replacement
- Gemini 3.8 Flash TTSgemini-3.8-flash-tts
It is deprecated; the earliest possible shutdown date is November 17, 2026. It may run longer. Recommended replacement: gemini-3.8-flash-tts.
How to migrate to Gemini 3.8 Flash TTS
Free tier: in place when tracking began (October 7, 2026) (source) · All free models
Features
Compare models| Feature | Value | Since | Source |
|---|---|---|---|
| Structured outputsThe model can be held to a JSON schema you supply, so every reply parses without retries or cleanup. | Not supported | in place when tracking began (October 6, 2026) | source |
| Function callingAlso called tool use. You describe functions; the model replies with a function name and arguments for your code to run, then uses the result. | Not supported | in place when tracking began (October 6, 2026) | source |
| Prompt cachingA prompt prefix you send again and again (system prompt, documents, tools) is cached, so later requests cost less and start faster. | Not supported | in place when tracking began (October 6, 2026) | source |
| Batch APISend many requests as one job that runs in the background, usually finished within 24 hours, at a lower price than live requests. | Not supported | first seen October 14, 2026 | source |
| Reasoning / thinkingThe model can work through a problem step by step before it answers: usually better answers to hard questions, at the cost of more tokens and time. | Not supported | in place when tracking began (October 6, 2026) | source |
| Built-in web searchThe company's API can search the web for the model during a request and cite its sources; you don't need a search service of your own. | Not supported | in place when tracking began (October 6, 2026) | source |
| Context windowThe most the model can work with in one request, in tokens: your prompt, conversation history and files. A token is about three-quarters of an English word. | 8,192 tokens | in place when tracking began (October 6, 2026) | source |
| Max output tokensThe longest reply the model can write in one response, in tokens. A token is about three-quarters of an English word. | 16,384 tokens | in place when tracking began (October 6, 2026) | source |
Not published by Google: Image input, PDF input, Fine-tuning, temperature parameter, top_p parameter, logprobs.
Price history
USD per 1M tokens, standard tierWe started recording this model's prices on Oct 1, 2026. The history grows with each daily check.
Show as a table
| From | Type | Price |
|---|---|---|
| Oct 1, 2026 | Input | $0.50 |
| Oct 1, 2026 | Output | $10.00 |
Prices
USD per 1M tokens, every type and band, by tier| Type | Modality | Price $/1M | In effect |
|---|---|---|---|
| Standard | |||
| input | text | $0.50 | |
| output | audio | $10.00 | |
| Batch | |||
| input | text | $0.25 | |
| output | audio | $5.00 | |
Changelog
Changes we detected on Google's pages- Feature changed
gemini-2.5-flash-preview-tts: Batch API supported → not supported
Heads-up
- Deprecated
Google deprecated gemini-2.5-flash-preview-tts: shuts down no earlier than Nov 17, 2026
Breaking
Related news
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Last checked · Sources: Google deprecations, Google pricing, Google models, Google aliases, Google api models