The Julius model guide

Julius AI models and agents

Compare Julius 1.2, Lite, Max, and Ultra for everyday questions and complex analysis.

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Compare the models

Start free with Julius Lite. Other model access depends on your plan.

Production dashboard plotting feasible plans and the optimal mix of 60 Standard and 10 Deluxe units for $3,100 contribution. — Production planning dashboardIllustrative output · Fictional dataView full size

Compare Julius models

Start with Julius 1.2 for most work. Lite is the quick, lower-credit option; Max and Ultra are intended for progressively more demanding tasks. These are Julius agent experiences with access to workplace tools.

4 results

API prices are USD per million input / output tokens. Julius uses separate plans and credits. See each model for pricing tiers and conditions. Scroll the table to compare all columns.

AI model capabilities, Julius plans, and provider API prices
Model	Consider it for	Published context	Native inputs	Julius access	API input / output
Julius 1.2 Julius	Most everyday questions and workplace tasks	Julius agent	Prompts and files supported by Julius	Pro, Max, Ultra, and Business	Uses Julius credits
Julius 1.2 Lite Julius	Quick questions with lower credit usage	Julius agent	Prompts and files supported by Julius	Free, Pro, Max, Ultra, and Business	Uses Julius credits
Julius 1.2 Max Julius	Complex analysis with additional reasoning	Julius agent	Prompts and files supported by Julius	Pro, Max, Ultra, and Business	Uses Julius credits
Julius 1.2 Ultra Julius	The most complex Julius tasks	Julius agent	Prompts and files supported by Julius	Max, Ultra, and Business	Uses Julius credits

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.

Which Julius agent should you choose?

Match the scope of the task to the agent. Define the output and a way to check it before increasing the amount of reasoning you use.

A focused question or a quick update

Start with Lite for a small, well-defined task. The budget example shows how a few rows can become a checked stakeholder update. Lite is also the option available on the Free plan.

Julius 1.2 Lite: details and uses

Everyday work with files

Use Julius 1.2 as a starting point for routine analysis and creation. Give it the source material and the result you want, then inspect the calculations before sharing.

Julius 1.2: details and uses

A more involved analytical question

Consider Max when your task needs several connected steps. Its margin example separates a revenue increase from a profit decline. Max pairs GPT-5.6 Sol with Julius tools.

Julius 1.2 Max: details and uses

A demanding problem with constraints

Consider Ultra for deeper reasoning, with an explicit definition of success. Try the production-planning example and check both resource limits. Ultra requires an eligible Max, Ultra, or Business plan.

Julius 1.2 Ultra: details and uses

Is a Julius agent the same as a foundation model?

A Julius agent combines a model with the tools and workflow around it. The provider describes the underlying model; the Julius plan determines access and credits. Compare the complete workflow when deciding what to use.

How should I compare agents on my own task?

Use the same input and instructions, define the checks in advance, and compare the delivered result. A higher tier does not remove the need to check the answer. The worked examples provide small, reproducible starting points.

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

Julius plans and credits