# Gemini 2.5 Pro Preview TTS API Pricing

As of October 10, 2026, Gemini 2.5 Pro Preview TTS costs $1.00 per 1M input tokens and $20.00 per 1M output tokens on Google AI Studio, with cache reads at $0.125 per 1M tokens. It has an 8,192-token context window and returns up to 16,384 tokens per response.

- Page: https://models.litellm.ai/models/gemini-2.5-pro-preview-tts
- Lab: Google
- LiteLLM model name: `gemini/gemini-2.5-pro-preview-tts`
- Context window: 8,192 tokens
- Max output: 16,384 tokens
- Added to LiteLLM: May 2025
- Deprecation date: November 17, 2026
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Google AI Studio | `gemini/gemini-2.5-pro-preview-tts` | $1.00 | $20.00 | $0.125 | – | – | 8K |
| Google Vertex AI | `vertex_ai/gemini-2.5-pro-preview-tts` | $1.00 | $20.00 | $0.125 | – | – | 1M |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- Google AI Studio: $12.00
- Google Vertex AI: $12.00
- Google AI Studio batch: $6.00

## Features

Supported: Parallel tool calls, Prompt caching.
Not supported: Function calling, Structured output, Image input, Audio input, Audio output, Web search.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="gemini/gemini-2.5-pro-preview-tts",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Gemini 2.5 Pro Preview TTS cost?

Gemini 2.5 Pro Preview TTS costs $1.00 per 1M input tokens and $20.00 per 1M output tokens on Google AI Studio, with cache reads at $0.125 per 1M tokens. Batch requests cost $0.50 per 1M input tokens and $10.00 per 1M output tokens.

### What is the context window of Gemini 2.5 Pro Preview TTS?

Gemini 2.5 Pro Preview TTS has an 8,192-token context window and returns up to 16,384 tokens per response.

### Which providers offer Gemini 2.5 Pro Preview TTS?

Gemini 2.5 Pro Preview TTS is available from 2 providers through LiteLLM: Google AI Studio and Google Vertex AI.

### How do I call Gemini 2.5 Pro Preview TTS with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gemini/gemini-2.5-pro-preview-tts", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does Gemini 2.5 Pro Preview TTS support?

Gemini 2.5 Pro Preview TTS supports parallel tool calls and prompt caching. It does not support function calling, structured output, image input, audio input, audio output and web search.

### When did LiteLLM add Gemini 2.5 Pro Preview TTS?

Gemini 2.5 Pro Preview TTS was added to LiteLLM's model price file in May 2025.

### Is Gemini 2.5 Pro Preview TTS being deprecated?

Google AI Studio lists a deprecation date of November 17, 2026 for gemini/gemini-2.5-pro-preview-tts.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json