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Claude Max 20x vs ChatGPT Pro 20x
Claude Max 20x is our pick of the top band. Both cost the same $200/mo.
Our verdict
The Anthropic ladder. Every Claude plan is Claude Code on the same 5-hour rolling window, and a bigger rung buys a bigger allowance. The exception is Fable, which ships only on the Max tiers, so $20 buys Opus 5 and Sonnet 5 rather than the flagship. Our paired runs put the real 5x-to-20x gap nearer 5.7x than the advertised 4x.
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.
Claude Max 20x is our pick of the top band.
Claude Max 20x is for all-day work with several agents running at once; ChatGPT Pro 20x is for Codex-first teams who want the limit off the table.
Both cost the same $200/mo.
We have not measured ChatGPT Pro 20x on its own plan; its card below points at the closest graded evidence.
The strongest models available with the window to run them in parallel. It is also the easiest plan here to overpay for: Max 5x clears most single-agent days at half the price, so the honest case for 20x is several agents at once, not more capability.
Pros
- The strongest models available today
- Enough window for several agents at once
- The widest model choice of any plan here
Cons
- Max 5x covers most single-agent days for $100 less
- The value case leans on the current promotion
Best for All-day work with several agents running at once.
How far it goes: about 3 to 20 times per 5h window
Our whole Real-world issues suite runs about 3 to 20 times per 5h window on this plan, depending on which model you run.
That works out at about 7c to 47c of the subscription per run, at the list price.
Measured on this plan, at 5% to 34%/5h of its allowance per run. A share belongs to the plan it was measured on, so we never subtract one plan's from another's.
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.
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, Claude Max 20x or ChatGPT Pro 20x?
Claude Max 20x is our pick of the top band. Claude Max 20x is for all-day work with several agents running at once; ChatGPT Pro 20x is for Codex-first teams who want the limit off the table.
How much do Claude Max 20x and ChatGPT Pro 20x cost?
Claude Max 20x costs $200/month (public price as of 2026-08-12); ChatGPT Pro 20x costs $200/month (public price as of 2026-08-12).
How far does a suite run go on Claude Max 20x versus ChatGPT Pro 20x?
Our whole Real-world issues suite fits about 3 to 20 times per 5h window on Claude Max 20x. We have not measured ChatGPT Pro 20x on its own plan. Each figure is a share of that plan's own allowance, so the two are never subtracted.