Gemini 2.5 Flash Preview TTS
Summary
Gemini 2.5 Flash Preview TTS is a proprietary speech model from Google DeepMind, released on 1 May 2025. It accepts text and generates audio, with a 8K-token context window and up to 16K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.50 per million input tokens and $10 per million output tokens (Gemini API), across 1 provider we track.
Speech generation model for controllable voice, narration, and audio delivery
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Google DeepMind |
|---|---|
| Release date | 1 May 2025 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 8K (8,192 tokens) [models.dev] |
| Max output | 16K tokens [models.dev] |
| Knowledge cutoff | Jan 2025 [models.dev] |
| Input | Text [models.dev] |
| Output | Audio [models.dev] |
| Reasoning mode | No [models.dev] |
| Tool calling | No [models.dev] |
Gemini 2.5 Flash Preview TTS API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Gemini API gemini-2.5-flash-preview-tts | $0.50 | $10 | – | 8K | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of Gemini 2.5 Flash Preview TTS?
Gemini 2.5 Flash Preview TTS has a context window of 8,192 tokens (8K) and can generate up to 16,384 tokens in a single response, according to models.dev.
How much does the Gemini 2.5 Flash Preview TTS API cost?
Through Gemini API, Gemini 2.5 Flash Preview TTS costs $0.50 per million input tokens and $10 per million output tokens. Prices last verified 4 Oct 2026.
Is Gemini 2.5 Flash Preview TTS open source?
No. Gemini 2.5 Flash Preview TTS is a proprietary model; Google DeepMind has not released its weights. It is available through APIs including Gemini API.
When was Gemini 2.5 Flash Preview TTS released?
Google DeepMind released Gemini 2.5 Flash Preview TTS on 1 May 2025, according to models.dev.
Change history
No changes detected since we started tracking this model. We re-check every source daily.