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Rules · change record

Rule changes and sources

Every rule this tool explains, the sources behind it and when they were checked. Past readings keep the rule version they were made with.

Reviewed changes

Initial rule baseline 2026-09-27.1, documented 2026-10-01. No reviewed change has been recorded since this baseline, so there is no earlier or later conclusion to compare.

Rules in baseline 2026-09-27.1
RuleApplies toSourcesAnnouncedEffectiveVerifiedReview due
Included usage windows
Codex usage on a ChatGPT plan is not a fixed number of messages. The model, the size and complexity of a task, and whether it runs locally or in the cloud change how much of the allowance a task uses.		ChatGPT planS01UnknownUnknown2026-10-012026-10-31
Included usage windows
Local tasks and cloud tasks share your plan's allowance. A five-hour limit and a weekly limit can both apply, and limits differ by plan.		ChatGPT planS01UnknownUnknown2026-10-012026-10-31
Included usage windows
The official client reports each limit window separately, with its own used percentage and reset time, and a window can be missing. Room in one window does not mean room in another.		ChatGPT planS02UnknownUnknown2026-09-262026-10-26
Included usage windows
To see your remaining limits, open the official usage dashboard or run /status in an active Codex CLI session.		ChatGPT planS01UnknownUnknown2026-10-012026-10-31
Credits
After you reach your included limits, available credits let you continue working. Included usage and credits are separate resources.		ChatGPT planS01UnknownUnknown2026-10-012026-10-31
Credits
Which plans can use credits, and how credits are shared, follows OpenAI's credits help article for your plan. A credit balance is known only when your own reading reports one.		ChatGPT planS04UnknownUnknown2026-09-262026-10-26
Resets and reset credits
Each reported window carries its own reset time. Windows reset on their own schedules; the reset time of one window says nothing about another.		ChatGPT planS02UnknownUnknown2026-09-262026-10-26
Resets and reset credits
Reaching a limit does not always stop a task that is already running: OpenAI's help says an active turn can continue past the limit, subject to fair use.		ChatGPT planS03UnknownUnknown2026-09-262026-10-26
Resets and reset credits
Reset credits are a separate entitlement with their own eligibility rules, and the official client reports how many are available. A public reset announcement does not show that your account received one.		ChatGPT planS02, S03UnknownUnknown2026-09-262026-10-26
API rate limits and budgets
When you use Codex with an API key, API pricing applies instead of the usage limits included with a ChatGPT plan.		API keyS01UnknownUnknown2026-10-012026-10-31
API rate limits and budgets
An HTTP 429 from the API has several causes: requests sent too quickly (follow Retry-After when present), a request rate that rose too quickly, or an organization or project that reached its spend limit. Each needs a different fix; none of them waits for a weekly reset.		API keyS05UnknownUnknown2026-10-012026-10-31

Unknown means the source does not state the date. A rule past its review date stays listed and is marked until its source is read again.

Sources

Does a rule change affect my plan?

Check your saved plan: a plan records the rule version it was made with.

A rule change never recalculates a past reading or plan. When a plan's rules changed, read your quota again and make a new plan version.

Open the plannerRead the current rules