How much does Gemini 3.1 Pro Preview cost per token?

Gemini 3.1 Pro Preview is priced at $2.00 per million input tokens and $12.00 per million output tokens, per OpenRouter as of Jul 8, 2026.

What is Gemini 3.1 Pro Preview's context window?

Gemini 3.1 Pro Preview supports a context window of up to 1M tokens, per Google.

How widely used is Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview accounts for about 0.4% of tracked OpenRouter coding-token volume as of Jul 7, 2026.

What are the alternatives to Gemini 3.1 Pro Preview?

By OpenRouter usage, comparable models include Claude Opus 4.6, gpt-oss-20b, and Claude Haiku 4.5. Side-by-side comparisons are linked in the alternatives table.

ModelsGoogle

Gemini 3.1 Pro Preview

Name: Gemini 3.1 Pro Preview
Author: Google

openrouter

Context

tokens

Released

Feb 19, 2026

on OpenRouter

Usage rank

#31

of 41 tracked models

Token share

0.4%

OpenRouter · Jul 7, 2026

Pricing

Price per million tokens

Input $/MTok

$2.00

OpenRouter · Jul 8, 2026

Output $/MTok

$12.00

OpenRouter · Jul 8, 2026

Cache read $/MTok

$0.2

OpenRouter

Cache write $/MTok

$0.38

OpenRouter

Current Gemini 3.1 Pro Preview prices per million tokens across tracked sources.
Source	Tracked slug	In $/MTok	Out $/MTok	Cache read	Cache write	Context	Effective	Last Δ (in)
OpenRouter	google/gemini-3.1-pro-preview	$2.00	$12.00	$0.2	$0.38	1M	Jul 8, 2026	—
models.dev	github-copilot/gemini-3.1-pro-preview	$2.00	$12.00	$0.2	—	200K	Jul 8, 2026	50%
llm-prices.com	gemini-3-1-pro-preview-200k	$4.00	$18.00	—	—	—	Jul 8, 2026	100%

latest tracked price per source · Δ = most recent input-price move within that source

3 sources tracking

Input $/MTok

Output $/MTok

per-source step lines · $/MTok

history since Jan 1, 2023

Specs

Context & availability

Gemini 3.1 Pro Preview specifications.
Provider	Google
Context window	1M tokens
Listed on OpenRouter	Feb 19, 2026
Tracked price sources	llm-prices.com · OpenRouter · models.dev
OpenRouter slugs	google/gemini-3.1-pro-preview · google/gemini-3.1-pro-preview-20260219

source: OpenRouter model catalog + tracked price feeds

id: gemini-3-1-pro

Usage

Share of OpenRouter tokens

90-day · to Jul 7, 2026

source: OpenRouter model rankings · share of tracked coding-token volume

0.4% on Jul 7, 2026

Benchmarks

Benchmark results

Benchmark scores for Gemini 3.1 Pro Preview.
Benchmark	Configuration	Score	Date	Source
AA Intelligence Index	google/gemini-3.1-pro-preview	46.5index	—	or-embedded-aa
AA Coding Index	google/gemini-3.1-pro-preview	68.8index	—	or-embedded-aa
AA Agentic Index	google/gemini-3.1-pro-preview	21.4index	—	or-embedded-aa

scores as published by each benchmark; configurations differ — compare within a row's benchmark only

Alternatives

Similar models

Alternatives to Gemini 3.1 Pro Preview by OpenRouter usage-rank proximity.
#	Model	Tokens/day	7d Δ	Head-to-head
36	Claude Opus 4.6Anthropic	32.8B	5.3%	vs Gemini 3.1 Pro Preview
38	gpt-oss-20bOpenAI	25.7B	—	vs Gemini 3.1 Pro Preview
34	Claude Haiku 4.5Anthropic	38.7B	4.9%	vs Gemini 3.1 Pro Preview
40	Kimi K2.7 CodeMoonshot AI	24B	17.8%	vs Gemini 3.1 Pro Preview

ranked by OpenRouter usage-rank proximity

snapshot Jul 7, 2026

FAQ

Gemini 3.1 Pro Preview FAQ

How much does Gemini 3.1 Pro Preview cost per token?: Gemini 3.1 Pro Preview is priced at $2.00 per million input tokens and $12.00 per million output tokens, per OpenRouter as of Jul 8, 2026.
What is Gemini 3.1 Pro Preview's context window?: Gemini 3.1 Pro Preview supports a context window of up to 1M tokens, per Google.
How widely used is Gemini 3.1 Pro Preview?: Gemini 3.1 Pro Preview accounts for about 0.4% of tracked OpenRouter coding-token volume as of Jul 7, 2026.
What are the alternatives to Gemini 3.1 Pro Preview?: By OpenRouter usage, comparable models include Claude Opus 4.6, gpt-oss-20b, and Claude Haiku 4.5. Side-by-side comparisons are linked in the alternatives table.

Alerts

Track Gemini 3.1 Pro Preview

Email me when Gemini 3.1 Pro Preview's price moves or it gets deprecated.