Claude Code and Codex limit changes: a dated log

Who it affects: ChatGPT Plus, Pro and Business plans that use Codex. OpenAI's help article "Understanding ChatGPT and Codex usage limits", published on 1 November 2026, says: "Starting in December, Plus, Pro, and Business plans' usage allowance will be shared across ChatGPT and Codex". Usage "will be measured in tokens", so how much a task uses depends on the model and the task, and "Instant chat will not draw from your usage."

OpenAI gives no exact date. It says it expects "most users won't need to wait for their usage to reset more often than they do now", and that remaining usage and reset times will show in Settings > Usage. Until then, /status in the Codex CLI shows each window. How Codex's limits work explains the windows as they are today.

Who it affects: Claude subscribers on the $100 and $200 plans. Anthropic announced on X: "We're renaming our Max plans: Max 5x → Max, Max 20x → Ultra. Max is still $100/month, and Ultra is still $200." And: "We're also removing the 5-hour limit for verified Ultra accounts, starting today with most existing subscribers." Newer accounts keep a temporary limit until they are verified. The same post says "Weekly limits remain unchanged."

Anthropic's Ultra plan article now says Ultra "includes 10 times the Pro plan's usage every week and has no five-hour limit, for verified accounts." Its Max plan article says "Max plans have a five-hour limit, a weekly usage limit that applies across all models, and a separate weekly limit for Fable." Pro keeps its 5-hour limit too, as the pricing page shows. To see whether your Ultra account is verified, open Settings > Usage on claude.ai: if there is no Current session bar, it is. Is the Claude 5-hour limit gone? has the detail.

This is a report from users, not a change Anthropic has confirmed. Anthropic's announcement said "Weekly limits remain unchanged." Since then, some people on Ultra and on the $100 plan report their weekly allowance going faster:

• An Ultra user: "Last week I can consume 50% in 2 days, now it's just 10 hours."
• A $100 plan user who measured it: "100% of 5-hour session used to be 10-11% of weekly, but since the last 2 weeks it’s 15-16% of weekly."

Others in the same threads see no change, and point out that without a 5-hour stop it is easier to use more in a day. Why your limit ran out so fast has more on both sides.

Who it affects: ChatGPT Plus users of Codex. OpenAI's own pages confirm the result but do not date it: the Codex pricing page gives estimates of "local messages per five-hour period for Plus and Standard Business" and says "Pro plans currently have no five-hour limit." The date comes from 9to5mac's report of a post on X by OpenAI's Tibo Sottiaux on 24 August: "Tomorrow we will bring back the 5h limit for Plus accounts across ChatGPT Work and Codex", with Pro kept off "for the upcoming months".

Who it affects: ChatGPT Plus, Pro and Business users of Codex. OpenAI Support confirmed it on OpenAI's community forum on 28 July: "As announced on July 12, 2026, the 5-hour Codex usage limit has been temporarily lifted for Plus, Pro, and Business users." Weekly limits stayed. The lift ended for Plus on 25 August, in the entry above.

A vendor's announcement says what changed for everyone; whether your own week drains faster is a question about your own usage. OpenReason Intel, a dashboard for Claude Code and Codex usage, keeps a record of your 5-hour and weekly windows over time from every machine you use, so you can compare the weeks before and after a change.

It shows you what happened; it does not stop a session as you work, and it cannot change your vendor's limits. To see where you stand right now, /usage in Claude Code and /status in Codex show both windows.