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ChatGPT Pro 20x vs SuperGrok Heavy
ChatGPT Pro 20x is for Codex-first teams who want the limit off the table; SuperGrok Heavy is for Grok users who want the highest limits, whatever they cost. SuperGrok Heavy costs $300/mo, 1.5x ChatGPT Pro 20x's $200/mo.
Our verdict
The OpenAI ladder. Every paid ChatGPT rung runs the same Codex CLI and the same GPT 5.6 models; upgrading changes the weekly allowance and nothing else. Plus is already the lightest quota burn we measure, about 3% of its window per real-world run, so the upper rungs sell headroom most people never touch.
The xAI ladder. It splits at $30. Lite, below that, is chat only; from SuperGrok up every rung runs the same Grok CLI and model. xAI publishes no usage multiples, so we cannot say what a bigger rung buys beyond "more". The one feature only this ladder sells is live X search, and only SuperGrok Plus has it.
ChatGPT Pro 20x is for Codex-first teams who want the limit off the table; SuperGrok Heavy is for Grok users who want the highest limits, whatever they cost.
SuperGrok Heavy costs $300/mo, 1.5x ChatGPT Pro 20x's $200/mo.
We have not measured ChatGPT Pro 20x on its own plan; its card below points at the closest graded evidence.
We have not measured SuperGrok Heavy on its own plan; its card below points at the closest graded evidence.
If Plus has a problem, the limit is not it: one real-world run costs about 3% of the weekly window. Twenty times that allowance is a lot of money aimed at the least pressing upgrade on this page, and the agent underneath does not change.
Pros
- The limit stops existing as a concern
- The quickest turnaround we measure
Cons
- Headroom on top of the most generous headroom here
- The agent is the same as on Plus
Best for Codex-first teams who want the limit off the table.
How far it goes: we have not measured this plan
Same Codex CLI as ChatGPT Plus with a far bigger allowance - the Plus scorecards are the closest evidence.
The leaderboard lists every plan we do grade.
The most expensive plan we track, and the least knowable: xAI publishes no usage multiple, so we cannot say what $300 buys beyond "more". The model is the same 4.6 that runs at $30, currently the slowest agent we run.
Pros
- The highest xAI limits sold
- The full Grok product, X features included
Cons
- Ten times the price of the $30 tier, same model
- No published multiple: the extra allowance is unquantified
Best for Grok users who want the highest limits, whatever they cost.
How far it goes: we have not measured this plan
Same Grok CLI as SuperGrok with a far bigger allowance - the SuperGrok scorecard is the closest evidence.
The leaderboard lists every plan we do grade.
Verdicts and prices are the quiz's versioned editorial catalog, last reviewed 2026-08-20; usage figures come from our own published runs and stay a share of each plan's own allowance. Any other pair composes on the subscription comparison, and the quiz turns your answers into a recommendation.
Frequently asked questions
Which should I pick, ChatGPT Pro 20x or SuperGrok Heavy?
ChatGPT Pro 20x is for Codex-first teams who want the limit off the table; SuperGrok Heavy is for Grok users who want the highest limits, whatever they cost.
How much do ChatGPT Pro 20x and SuperGrok Heavy cost?
ChatGPT Pro 20x costs $200/month (public price as of 2026-08-12); SuperGrok Heavy costs $300/month (public price as of 2026-08-12).