Gemini 3.1 Pro Preview

A refinement of Gemini 3 Pro with improved thinking, better token efficiency and more factually consistent output.

Context: 1M tokens
Max output: 66K
Cutoff: Jan 2025
Released: Feb 2026

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Hosted API price

List price via Google Cloud · per 1M tokens

USD

Input: $2.00 /1M
Output: $12.00 /1M
Hosted by: 2 providers

Hosted API pricing

How we price

Order

Providers are listed cheapest input rate first, then by output rate, a tie going to the creator's own listing. A provider that lists the model without a published rate sits at the end.

Prices

Base-tier, on-demand rates in USD per 1M tokens, converted at ECB reference rates where a provider publishes in another currency. Cached-input and batch rates show only where a provider publishes them. "Cheapest" marks the one provider with the lowest input and output pair; a tie wears no badge.

Cost

Input rate times the input tokens plus output rate times the output tokens, at the monthly volume set above the table. Cached-input, batch, long-context and reasoning-token billing are not modelled.

Transparency and funding

Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.

Every provider serving Gemini 3.1 Pro Preview, cheapest input first. Set your monthly volume to see what each would bill.

Input M Output M

Every provider serving Gemini 3.1 Pro Preview, with its price per 1M input and output tokens and what the volume above would cost
Provider	Input /1M	Output /1M	Cached input /1M	Cost at 10M in + 2M out	Link
Google Cloud Creator	$2.00	$12.00	$0.20	$44.00	Visit website
Replicate	$2.00	$12.00		$44.00	Visit website

Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.

Similarly priced models

The models nearest Gemini 3.1 Pro Preview by blended rate, each at its own cheapest provider.

Models priced nearest Gemini 3.1 Pro Preview per 1M tokens, each at its cheapest provider
Model	Blended /1M	Input /1M	Output /1M	Context	Cutoff	vs Gemini 3.1 Pro Preview
GPT-4.1 OpenAI	$3.00	$2.00	$8.00	1M	Jun 2024	−18%
o3 OpenAI	$3.00	$2.00	$8.00	200K	Jun 2024	−18%
Claude Sonnet 5 Anthropic	$3.3333	$2.00	$10.00	1M	Jan 2026	−9%
GPT-5.6 Sol OpenAI	$3.3333	$2.00	$10.00	1M	Feb 2026	−9%
GPT-6 Sol OpenAI	$3.3333	$2.00	$10.00	1M	Apr 2026	−9%
Gemini 3.1 Pro Preview This model Google Cloud	$3.6667	$2.00	$12.00	1M	Jan 2025
GPT-5.6 Terra OpenAI	$3.6667	$2.00	$12.00	1M	Feb 2026	0%
Kimi K3 Moonshot AI	$3.6667	$2.00	$12.00	1M		0%
Command A Cohere	$3.75	$2.50	$10.00	256K		+2%
Command R+ 08-2024 Cohere	$3.75	$2.50	$10.00	128K	Feb 2023	+2%
GPT-4o OpenAI	$3.75	$2.50	$10.00	128K	Oct 2023	+2%

USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.

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Capabilities

What Gemini 3.1 Pro Preview accepts and can do, as published by Google Cloud.

Text Accepts and generates natural-language text.
Image Accepts images as input alongside text.
Video Accepts video as input.
Audio Accepts audio as input.
Reasoning Thinks before it answers, always on or as a switchable mode.
Function calling Connect to external tools, APIs, and systems.
Structured output Return responses in structured formats like JSON.
Web search Search the web for up-to-date information.
Code execution Write and execute code in a sandboxed environment.
File upload Process uploaded documents, spreadsheets, and other files.

Common questions

What is Gemini 3.1 Pro Preview good for?

Software engineering and agent workflows that need precise tool use and multi-step execution, refining the Gemini 3 Pro series.

When is Gemini 3.1 Pro Preview not a good fit?

Cost-sensitive, high-volume work: it sits at the top of Google's price range. Closed weights, so no self-hosting, output is text only, and it is still a preview release.

What is the cheapest way to run Gemini 3.1 Pro Preview?

The cheapest hosted rate is $2.00 / $12.00 per 1M tokens via Google Cloud.

How does Gemini 3.1 Pro Preview compare with Gemini 3 Pro Preview?

Google says Gemini 3.1 Pro Preview refines Gemini 3 Pro Preview with better thinking, less token use and more grounded, factually consistent output, tuned for software engineering and agent work that needs precise tool use. Same 1M-token context and text, image, audio and video input. Gemini 3.1 Pro Preview came out 3 months later.

Can I self-host Gemini 3.1 Pro Preview?

No. Google Cloud does not publish the weights; Gemini 3.1 Pro Preview is available only through hosted APIs.