LiteLLMModels

Gemini 2.5 Flash Preview TTS API Pricing

As of October 10, 2026, Gemini 2.5 Flash Preview TTS costs $10.00 per 1M tokens on Google AI Studio. It has an 8,192-token context window and returns up to 16,384 tokens per response.

By GoogleModel ID gemini-2.5-flash-preview-ttsPrices updated Checked
Scheduled for deprecation: Google AI Studio lists November 17, 2026 as the deprecation date for gemini-2.5-flash-preview-tts.
Input
$0.50 / 1M tokens
Output
$10.00 / 1M tokens
Context window
8,192 tokens
Max output
16,384 tokens
Providers
2
Added to LiteLLM
May 2025

Gemini 2.5 Flash Preview TTS pricing by provider

3 listings across 2 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

ProviderModel name in LiteLLMInputOutputBatch inBatch outContext
Google AI Studiogemini-2.5-flash-preview-tts$0.50$10.00$0.25$5.008K
Google AI Studiogemini/gemini-2.5-flash-preview-tts$0.50$10.00$0.25$5.008K
Google Vertex AIvertex_ai/gemini-2.5-flash-preview-tts$0.50$10.00$0.25––

Other Gemini 2.5 Flash Preview TTS prices on Google AI Studio

Audio output$10.00 per 1M tokens

Gemini 2.5 Flash Preview TTS features

Use Gemini 2.5 Flash Preview TTS with LiteLLM

Call Gemini 2.5 Flash Preview TTS through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/audio/speech. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import speech

response = speech(
    model="gemini-2.5-flash-preview-tts",
    input="Hello from LiteLLM",
    voice="alloy",
)
Proxy config.yaml
model_list:
  - model_name: gemini-2.5-flash-preview-tts
    litellm_params:
      model: gemini-2.5-flash-preview-tts
      api_key: os.environ/GEMINI_API_KEY
Call the proxy
curl http://0.0.0.0:4000/v1/audio/speech \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "gemini-2.5-flash-preview-tts",
    "input": "Hello from LiteLLM",
    "voice": "alloy"
  }'

Gemini 2.5 Flash Preview TTS FAQ

How much does Gemini 2.5 Flash Preview TTS cost?

Gemini 2.5 Flash Preview TTS costs $10.00 per 1M tokens on Google AI Studio. Batch requests cost $0.25 per 1M input tokens and $5.00 per 1M output tokens.

What is the context window of Gemini 2.5 Flash Preview TTS?

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

Which providers offer Gemini 2.5 Flash Preview TTS?

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

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

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

What features does Gemini 2.5 Flash Preview TTS support?

It does not support function calling, structured output, audio input and web search.

When did LiteLLM add Gemini 2.5 Flash Preview TTS?

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

Is Gemini 2.5 Flash Preview TTS being deprecated?

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

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: Google AI Studio, Google Vertex AI.

Provider pages: Google AI Studio, Google Vertex AI.