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Gemini 3.1 Pro API pricing on OpenRouter

Every OpenRouter Gemini 3.1 Pro rate we track, compared against 2 providers serving the same model.

Input from /1M
$1.00
Output /1M
$6.00
Price rank
#1 of 2
Last updated
August 16, 2026

OpenRouter currently has the cheapest Gemini 3.1 Pro input price among the 2 providers we track.

OpenRouter Gemini 3.1 Pro rates

Prices per 1M tokens. Batch and cached-input rates are shown where the provider publishes them.

OpenRouter Gemini 3.1 Pro pricing by mode
ModeInputOutput
Batch$1.00/1M$6.00/1M
Standard$2.00/1M$12.00/1M

About Gemini 3.1 Pro

Creator
Google
Context
1.0M
Modalities
text, image, video, audio
Tool calling
Yes
Full Gemini 3.1 Pro details and every provider →

Gemini 3.1 Pro on other providers

About OpenRouter

OpenRouter provides a unified API for accessing hundreds of AI models from multiple providers. It aggregates models from OpenAI, Anthropic, Google, Meta, Mistral, and many others, offering a single endpoint with automatic fallback routing and provider optimization.

Frequently Asked Questions

How much does Gemini 3.1 Pro cost on OpenRouter?

OpenRouter serves Gemini 3.1 Pro from $1.00 per 1M input tokens, across 2 tracked pricing modes. Prices are collected daily — see the table above for current input, output, and cached-input rates.

Is OpenRouter the cheapest way to run Gemini 3.1 Pro?

Of the 2 providers we track serving Gemini 3.1 Pro, OpenRouter currently has the lowest input price. Rates change often, and throughput and latency differ between providers — check the comparison above before committing.

Does OpenRouter offer batch or cached pricing for Gemini 3.1 Pro?

We track 2 Gemini 3.1 Pro offerings from OpenRouter. Batch and cached-input rates appear in the table above when the provider publishes them; blank cells mean we have no current figure for that mode.