Via Julius 1.2 Max

OpenAI: GPT-5.6 Sol

The OpenAI model behind Julius 1.2 Max, paired with Julius tools for complex analysis.

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Available on Pro, Max, Ultra, and Business. Compare plans

Reviewed October 13, 2026 · Sources

Presentation slide showing revenue rising to $42,000 while gross profit falls to $13,200, with a reconciled profit bridge. — Quarterly margin reviewIllustrative output · Fictional dataView full size

Best suited to: Complex analysis through Julius Max
Published context: 1,050,000 tokens
Native inputs: Text and images
Released: July 7, 2026

GPT-5.6 Sol pricing

Compare the provider’s API rates with access through Julius.

OpenAI API

Input / 1M tokens: $4
Output / 1M tokens: $20

Promotional standard API rates, available at least through November 21, 2026. Prompts above 272K input tokens are $8 input / $30 output per million for the full request. Julius Max uses Julius credits.

Check provider pricing

Use your Julius plan

Available on Pro, Max, Ultra, and Business. Credits cover the work performed with models and tools.

GPT-5.6 Sol is used by Julius 1.2 Max; it is not a separate option in the current model menu.

View Julius plans and credits

Prices in USD, reviewed October 13, 2026. API token charges are separate from Julius subscriptions and credits.

What is GPT-5.6 Sol?

GPT-5.6 Sol is an OpenAI model for complex professional work, with text and image input and a 1,050,000-token published context window. In Julius, it is used through Julius 1.2 Max.

Use this page to understand the underlying model, then choose Julius 1.2 Max for its agent experience. A model’s API specifications describe the model service; Julius adds its own instructions, tools, and credit accounting.

Professional reasoning

OpenAI positions Sol as the flagship tier of the GPT-5.6 family, with configurable reasoning effort.

A model inside a workspace

Julius 1.2 Max pairs this model with Julius’s analysis and creation tools.

Explain why revenue rose while profit fell

A two-product business sold more in Q2. Why did it keep less of the revenue?

Worked example · Fictional sample data · Expected results calculated from the CSVs

1. Input
Quarterly sales and costs
2. Check
Separate volume, mix, and cost
3. Deliver
A reconciled profit bridge

Expected result

Revenue rises by $8,000, while gross profit falls by $5,200. Volume and product mix add $800 to profit; the higher Standard unit cost subtracts $6,000.

Q1 gross margin: 54.1%
Q2 gross margin: 31.4%

Gross profit by quarter · USD

Q1: $18,400
Q2: $13,200

What the analysis needs to catch

A revenue-only summary would miss the margin squeeze. Separate revenue from profit, then reconcile the drivers to the total change.

Make this deliverable

A quarterly comparison chart and a short margin explanation.

Turn the profit bridge and management summary into a quarterly review deck with the AI presentation maker.

Try this example in Julius

The prompt includes the sample data. Review it in chat before sending. Results may vary; compare your answer with the calculations shown here.

View the sample output (PNG)View the workflow and chart (SVG)Download sales.csv Download all data and calculations

View the prompt and sample data

Calculate revenue, gross profit, and gross margin for each quarter. Reconcile the gross-profit change into a volume/product-mix effect using Q1 unit margins and a unit-cost effect using Q2 volumes. Create a clear chart and a short management memo. State the assumptions; do not infer causes that are absent from the data.

sales.csv

quarter,product,units,unit_price,unit_cost
Q1,Standard,1000,10,6
Q1,Premium,800,30,12
Q2,Standard,3000,10,8
Q2,Premium,400,30,12

These expected results come from the downloadable Python calculations. This example illustrates a workflow; it is not a measured benchmark of GPT-5.6 Sol.

Using GPT-5.6 Sol in Julius

Start with your task

The try buttons carry Julius 1.2 Max into a new chat when your plan includes it. Example buttons also fill the composer with the sample data. Review the prompt, or replace it with your own files and question, before sending.

If the model is unavailable on your plan, Julius explains the access requirement. You can choose another option in the model menu.

Analyze a spreadsheet Work through an analysis in code Create a report

Know the boundaries

The “gpt” choice in Julius refers to GPT-6 Astra, not GPT-5.6 Sol. Choose Julius 1.2 Max for the experience described here.
The published context window is not a promise that Julius will send a whole uploaded file directly to the model. Files may be handled with tools.

Model details and official research

Go to the original documentation for specifications, release details, and evaluation methods.

GPT-5.6 Sol specifications and pricing

Current API rates, promotional terms, context, and modalities.

Julius plans and credits

Compare current plans, credit allowances, and included tools.

What you can do with Julius

Explore analysis, research, and creation workflows.

GPT-5.6 Sol: frequently asked questions

Is GPT-5.6 Sol available on Julius?

GPT-5.6 Sol is used by Julius 1.2 Max; it is not a separate option in the current model menu. Available on Pro, Max, Ultra, and Business plans.

How much does GPT-5.6 Sol cost?

OpenAI lists $4 per million input tokens and $20 per million output tokens. Promotional standard API rates, available at least through November 21, 2026. Prompts above 272K input tokens are $8 input / $30 output per million for the full request. Julius Max uses Julius credits. Julius subscriptions and credits are separate.

How do I use GPT-5.6 Sol in Julius?

Open Julius and select Julius 1.2 Max from the model menu on an eligible paid plan. GPT-5.6 Sol is not a separate menu choice. Julius Max uses Julius credits, independently of OpenAI’s API token pricing.