The Julius model guide

Google Gemini models: features and research

Research Gemini 3.1 Pro Preview, its multimodal inputs, context limits, and API pricing.

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Research report showing conversion falling for both visitor segments despite a higher overall rate caused by a changing visitor mix. — Conversion analysis reportIllustrative output · Fictional dataView full size

Gemini 3.1 Pro Preview details

Gemini 3.1 Pro Preview is included as a research reference. It is not currently a choice in the Julius model menu. Its page links to supported alternatives for analysis and research in Julius.

Google

Research only

Gemini 3.1 Pro Preview

Researching multimodal reasoning capabilities

Explore Google’s multimodal reasoning model, its API costs, and alternatives you can use in Julius.

Not available on Julius · 1,048,576 input tokens

View model details

Explore what you can make with Julius: analyze Excel spreadsheets, create presentations, or build websites and interactive apps. Each model page explains its availability on Julius.

Research Gemini and choose an available alternative

This is a focused guide to Gemini 3.1 Pro Preview. Gemini is included for research; it is not currently available in the Julius model menu.

Evaluate the Gemini model specifications

Check Google’s documentation for input modalities, context, and preview status. Those specifications describe the model API, and do not establish access through Julius.

Gemini 3.1 Pro Preview: official research

Check the relevant pricing tier

Gemini API pricing varies with input length and usage conditions. Use the model page’s pricing notes before estimating a long-context workload.

Gemini 3.1 Pro Preview: pricing

Start an analysis in Julius today

Compare supported options such as GPT-6 Astra for your task. The margin example includes its data and expected calculations, so you can inspect the answer you receive.

GPT-6 Astra: worked example

Does this page list every Gemini model?

No. It covers the preview model included in this research collection and a practical alternative on Julius. Use Google’s model documentation for its full current lineup.

Selection guidance draws on provider documentation and Julius access. It is not a ranking from comparative performance tests.

Google Gemini 3.1 Pro Preview documentation