Gemini 3.1 Pro Preview Customtools

gemini-3.1-pro-preview-customtools by Google Cloud Released February 26, 2026
ReasoningFunction callingStructured outputPrompt cachingWeb searchComputer useImage inputFile inputAudio inputVideo inputEU hostingFree endpointUp to % off
Input from
$2 / 1M
Output from
$12 / 1M
Cached input from
$0.2 / 1M
Context window
1.05M
Endpoints
1
from 1 providers
Regions
Global

About Gemini 3.1 Pro Preview Customtools

Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party…

Gemini 3.1 Pro Preview Customtools is a chat model by Google Cloud, available on Eden AI through 1 endpoint from 1 provider, from $2 per million input tokens and $12 per million output tokens, with a context window of up to 1.05M tokens.

Providers and prices

1 endpoints from 1 providers, cheapest first, in USD per million tokens. Every one is called with the same Eden AI key: pin one with its endpoint ID, or let Eden AI route for you. Above 200K tokens: $4 input / $18 output per 1M.

Endpoint
Region
Context
Input / 1M
Output / 1M
Cached / 1M
Supports
Google CloudOfficial−%google/gemini-3.1-pro-preview-customtools
Global
1.05M
$2$2
$12
$0.2
ReasoningToolsJSONCacheVisionWeb

Performance

Performance figures appear here once Gemini 3.1 Pro Preview Customtools has enough traffic on Eden AI to report them without exposing any single customer.

Estimate your monthly cost

Enter your expected volume to compare every endpoint at once.

Call Gemini 3.1 Pro Preview Customtools with Eden AI

Use the model ID to let Eden AI pick an endpoint, or an endpoint ID from the table above to pin one.

import requests

response = requests.post(
    "https://api.edenai.run/v3/chat/completions",
    headers={"Authorization": "Bearer YOUR_EDENAI_API_KEY"},
    json={
        "model": "",
        "messages": [{"role": "user", "content": "Hello!"}],
    },
)
print(response.json())

Questions about Gemini 3.1 Pro Preview Customtools

On Eden AI, prices for this model start at $2 per million input tokens and $12 per million output tokens. Prices differ by endpoint; the providers table lists each one. Above 200K tokens: $4 input / $18 output per 1M.

Up to 1.05M tokens, depending on the endpoint.

1 endpoints from 1 providers, available in: Global. All of them are called with the same Eden AI API key.

Yes. At least one endpoint is hosted in Europe; pin it with its endpoint ID from the providers table to keep requests in the EU.

Over the last 30 days, the fastest first token was s () and the highest throughput was tokens per second ().