Gemini 2.5 Pro Preview TTS
Summary
Gemini 2.5 Pro 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 $1 per million input tokens and $20 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 Pro 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-pro-preview-tts | $1 | $20 | – | 8K | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of Gemini 2.5 Pro Preview TTS?
Gemini 2.5 Pro 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 Pro Preview TTS API cost?
Through Gemini API, Gemini 2.5 Pro Preview TTS costs $1 per million input tokens and $20 per million output tokens. Prices last verified 4 Oct 2026.
Is Gemini 2.5 Pro Preview TTS open source?
No. Gemini 2.5 Pro 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 Pro Preview TTS released?
Google DeepMind released Gemini 2.5 Pro 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.