LiteLLMModels

Gemini 3.8 Flash TTS API Pricing

As of October 10, 2026, Gemini 3.8 Flash TTS costs $9.00 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/gemini-3.8-flash-ttsPrices updated Checked
Input
$0.50 / 1M tokens
Output
$9.00 / 1M tokens
Cache read
$0.125 / 1M tokens
Context window
8,192 tokens
Max output
16,384 tokens
Providers
2
Added to LiteLLM
September 23, 2026

Gemini 3.8 Flash TTS pricing by provider

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

ProviderModel name in LiteLLMInputOutputCache readBatch inBatch outContext
Google AI Studiogemini/gemini-3.8-flash-tts$0.50$9.00$0.125$0.25$4.508K
Google Vertex AIvertex_ai/gemini-3.8-flash-tts$0.50$9.00–––8K

Other Gemini 3.8 Flash TTS prices on Google AI Studio

Priority input$0.90 per 1M tokens
Priority output$16.20 per 1M tokens
Flex input$0.25 per 1M tokens
Flex output$4.50 per 1M tokens
Audio output$9.00 per 1M tokens

Gemini 3.8 Flash TTS features

Use Gemini 3.8 Flash TTS with LiteLLM

Call Gemini 3.8 Flash 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/gemini-3.8-flash-tts",
    input="Hello from LiteLLM",
    voice="alloy",
)
Proxy config.yaml
model_list:
  - model_name: gemini-3.8-flash-tts
    litellm_params:
      model: gemini/gemini-3.8-flash-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-3.8-flash-tts",
    "input": "Hello from LiteLLM",
    "voice": "alloy"
  }'

Gemini 3.8 Flash TTS FAQ

How much does Gemini 3.8 Flash TTS cost?

Gemini 3.8 Flash TTS costs $9.00 per 1M tokens on Google AI Studio. Batch requests cost $0.25 per 1M input tokens and $4.50 per 1M output tokens.

What is the context window of Gemini 3.8 Flash TTS?

Gemini 3.8 Flash TTS has an 8,192-token context window and returns up to 16,384 tokens per response.

Which providers offer Gemini 3.8 Flash TTS?

Gemini 3.8 Flash TTS is available from 2 providers through LiteLLM: Google AI Studio and Google Vertex AI.

How do I call Gemini 3.8 Flash TTS with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gemini/gemini-3.8-flash-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 3.8 Flash TTS support?

Gemini 3.8 Flash TTS supports prompt caching.

When did LiteLLM add Gemini 3.8 Flash TTS?

Gemini 3.8 Flash TTS was added to LiteLLM's model price file on September 23, 2026.

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.