Gemini 3.1 Flash TTS API Pricing

By Google · 1 providerreplicate/google/gemini-3.1-flash-tts

Price: $40.00 per 1M tokens
Added: Nov 11, 2026

As of November 15, 2026, Gemini 3.1 Flash TTS costs $40.00 per 1M tokens on Replicate.

Prices updated November 11, 2026Checked November 15, 2026

Gemini 3.1 Flash TTS pricing by provider

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

Gemini 3.1 Flash TTS prices by provider in US dollars, token prices per 1M tokens, as of November 15, 2026. Source: LiteLLM model price file.
Provider	Model name in LiteLLM	Input	Output	Context
Replicate	`replicate/google/gemini-3.1-flash-tts`	$2.00	$40.00	–

Use Gemini 3.1 Flash TTS with LiteLLM

Call Gemini 3.1 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="replicate/google/gemini-3.1-flash-tts",
    input="Hello from LiteLLM",
    voice="alloy",
)

Proxy config.yaml

model_list:
  - model_name: gemini-3.1-flash-tts
    litellm_params:
      model: replicate/google/gemini-3.1-flash-tts
      # credentials: see the provider's LiteLLM docs page

Call the proxy

curl http://0.0.0.0:4000/v1/audio/speech \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $LITELLM_API_KEY" \
  -d '{
    "model": "gemini-3.1-flash-tts",
    "input": "Hello from LiteLLM",
    "voice": "alloy"
  }'

Gemini 3.1 Flash TTS FAQ

How much does Gemini 3.1 Flash TTS cost?

Gemini 3.1 Flash TTS costs $40.00 per 1M tokens on Replicate.

Which providers offer Gemini 3.1 Flash TTS?

Gemini 3.1 Flash TTS is available from Replicate through LiteLLM, using the model name replicate/google/gemini-3.1-flash-tts.

How do I call Gemini 3.1 Flash TTS with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="replicate/google/gemini-3.1-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.

When did LiteLLM add Gemini 3.1 Flash TTS?

Gemini 3.1 Flash TTS was added to LiteLLM's model price file on November 11, 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. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change. Provider pricing pages:

replicate.com/google/gemini-3.1-flash-tts

LiteLLM docs: Replicate.

Provider pages: Replicate.