Headroom

How the Fable weekly limit works on Max and Ultra

On Max and Ultra you can spend up to 50% of your weekly limit on Fable models. It is a share of the same limit, not extra room. What happens at the cap.

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On Max and Ultra, you can use up to half of your weekly limit on Fable models, and that half comes out of the same weekly allowance as everything else. It is a cap on one model family, not a bonus. Anthropic's wording: "You can use up to 50% of your weekly usage limits on Fable models at no extra cost. They draw from your plan's regular weekly usage limits and use them faster than other Claude models" (Help Center, as of November 2026).

It is a share, not extra room

A common belief is that Fable gives you 50% on top of your normal weekly limit. It does not. The Help Center says: "You can use up to 50% of your weekly limit on Fable models, but your use of other models draws from the same usage limits and you can never use more than your weekly limit."

A simple picture: your weekly limit is a tank. Everything you do drains it. Fable use drains it faster, and Fable use can account for at most half of it. Other models can use whatever is left.

A user has reported that Fable use counts against both the Fable limit and the all-models weekly limit (GitHub issue 108769). That matches the documented design: Fable use is part of the same weekly allowance, so it shows on both bars.

Why Fable drains faster

Anthropic says Fable models "use [your limits] faster than other Claude models". It does not publish a ratio or a token count, so there is no official figure for how much faster. For a sense of the API price gap, standard API list prices per million tokens are $8 input and $40 output for Fable 5.2, against $4 and $20 for Opus 5.5 and $2 and $10 for Sonnet 5.5 (claude.com/pricing, as of November 2026). Those are API prices, which usage credits bill at. How they translate into plan limits is not published. For the general picture of what costs the most, see which Claude model uses the least of your limit.

What happens at the Fable cap

When you reach the Fable limit on Max, Ultra or a Premium seat, Anthropic gives two options: "keep using Fable models with usage credits, or switch to another Claude model to keep working within your plan's usage limits" (Help Center). Usage credits bill at standard API rates and are separate from your subscription (Help Center); the details are in usage credits on Claude plans.

Switching models in Claude Code is a matter of /model. Fable is not the default on any plan; select it with /model fable or claude --model fable (model configuration docs). When Fable would bill to usage credits, the /model picker shows "Requires usage credits" on the Fable row, and interactive sessions can show a consent prompt. In non-interactive mode (-p), "Claude Code never asks for consent. When a Fable request there would bill to usage credits, Claude Code bills it without asking" (same docs). If you script Claude Code, remember that.

Hitting the Fable limit does not stop you using other models. The all-models weekly limit and the session limit are separate things, and "switching models doesn't restore access" if those are the ones you hit (Claude Code docs). A model-specific cap is the one case where switching helps. More in hit a model's weekly limit? switch models and keep going.

Which plans have it

As of November 2026:

  • Max and Ultra, plus premium seats on Team and on legacy seat-based Enterprise: a separate Fable limit of up to 50% of the weekly limit.
  • Pro, Team Standard seats and Standard seats on seat-based Enterprise: Fable models are not included in plan limits. They run on pay-as-you-go usage credits from the start. The exception is the Fable 5.2 launch week: through November 16, 2026 at 11:59 pm PT, Pro and Team Standard seats can use up to 50% of their weekly limits on Fable models at no extra cost (launch offers). What else came with the release is in Claude Fable 5.2 and your Claude Code limits.

How Pro differs is covered in can you use Fable on the Claude Pro plan. The available models are Fable 5.2, Fable 5.1 and Fable 5. In Claude Code the Help Center says Fable 5.2 needs version 2.1.321 or later, and Fable 5.1 needs a recent version (2.1.255 per the Help Center, 2.1.257 per the Claude Code docs).

The Fable 5.2 launch resets

Fable 5.2 launched on November 9, 2026. Max, Ultra and Premium seats with paid billing in place before launch got one to three Fable limit resets, depending on how long they have subscribed, expiring March 8, 2027 at 11:59 pm PT (launch offers). On the weekly limit, a Fable reset restores only the usage you spent on Fable: if you had used 80% of the week, 50% on Fable and 30% on other models, a reset takes you to 30%. If your account has a five-hour limit, the reset also refills that window in full. How to redeem one is in what "Reset for free" does.

Where the limit shows up

In Settings > Usage on the web, in Claude Desktop and in the mobile apps, the weekly limits section shows the all-models limit and, if your plan includes Fable, a Fable limit (Help Center). See where to see your Claude limits. Anthropic says weekly limits reset at a fixed time each week assigned to your account and does not describe a separate schedule for the Fable limit (when the weekly limit resets).

Claude Code's status line data has no documented per-model field, only the five-hour and seven-day windows, so a custom status line cannot show the Fable bar from that data. There is an open request to add one (GitHub issue 102989).

Watching it from the menu bar

Headroom is a free Mac menu bar app. For each Claude Code account signed in on the Mac, it shows Session % and Week %, and when the account has a per-model weekly limit, a third meter labelled with the model's name. When that model's limit is used up while other models still work, the row shows a half red dot and a status such as "Fable back in 6d 3h".

It shows how much you have used, never how much is left. Headroom never sends a prompt, so checking does not use any of your limits. It reads usage figures Anthropic does not publish as an official interface, so it can break until updated. It is independent of Anthropic and not endorsed by it.