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Gemini 3.1 Pro Preview Custom Tools

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.

text + image + audio + video + file → text · made by Google

$2→$12per Mtok in / out
Google Vertex AI · 3 sellers

Sold by 7 ways

SellerLaneRate
Google Vertex AI cloudbatch$1per Mtok in$6per Mtok outraw.githubusercontent.com · read 2026-10-31
Databricks 0 ways$2per Mtok in$12per Mtok out$0.2per Mtok cached
Databricks cloudnot on the seller's list todaystandard$2per Mtok in$12per Mtok out$0.2per Mtok cachedmodels.dev · read 2026-10-21
Google Vertex AI cloudstandard$2per Mtok in$12per Mtok out$0.00012per image$0.2per Mtok cachedmodels.dev · read 2026-10-31
Google Vertex AI cloudlong-context$4per Mtok in$18per Mtok out$0.4per Mtok cachedraw.githubusercontent.com · read 2026-10-31
Nous Research aggregatorstandard$2per Mtok in$12per Mtok out$0.000002per image$0.2per Mtok cached$0.38per Mtok cache writeinference-api.nousresearch.com · read 2026-09-12
OpenRouter 2 ways$2per Mtok in$12per Mtok out$0.000002per image$0.2per Mtok cached$0.38per Mtok cache write
OpenRouter aggregatorstandard$2per Mtok in$12per Mtok out$0.000002per image$0.2per Mtok cached$0.38per Mtok cache writeopenrouter.ai · read 2026-08-24
OpenRouter aggregatorgoogle-ai-studio$2per Mtok in$12per Mtok out$0.2per Mtok cached$0.38per Mtok cache writeopenrouter.ai · read 2026-08-25

Measured 2 standings

PlaceBoardMetricScore
12thof 35Swe bench verified — Epoch AImean_score75.62
46thof 71Vending bench 2 — Epoch AIScore3774.254

About

Gemini 3.1 Pro Preview Custom Tools — a text model from Google, sold by 3 companies from $2 in and $12 out per million tokens, placed 12th of 35 on Swe bench verified — Epoch AI.

It takes text, images, audio, video and files and returns text, with a context window of 1,048,576 tokens. It was published in February 2026, trained on material up to January 2025. Its sellers say it can reason step by step and call a tool. The catalogue files it under agents. Three companies sell it. The cheapest is $2 in and $12 out per million tokens at Google Vertex AI. Beside the standard rate there are batch and separately routed lanes. It has been measured on 2 boards, and stands best at 12th of 35 on Swe bench verified — Epoch AI.

Every current figure

Maker
Google
Register
model
Takes
text + image + audio + video + file
Returns
text
Context
1,048,576 tokens
Longest answer
65,536 tokens
Published
February 2026
Knowledge to
January 2025
Licence
not read
Sellers
3
Maker's own price
not read
Price
$2 in and $12 out per million tokens — Google Vertex AI
Boards
2
Best place
12th of 35 — Swe bench verified — Epoch AI

Known as 1 name

google/gemini-3.1-pro-preview-customtools