---
title: "Fable Is Back. Brilliant, and Expensive."
description: "Fable is the best model I have, and the heaviest. It drains my usage faster and costs more past the limit. On the price of reaching for the strong tool."
url: "https://hoeijmakers.net/fable-is-back-brilliant-and-expensive/"
date: 2026-07-03
author: "Rob Hoeijmakers"
site: "hoeijmakers.net"
language: "en"
tags: ["AI in Practice"]
---

# Fable Is Back. Brilliant, and Expensive.

Six categories on one map of Europe. EU, EEA, EFTA, Schengen, the eurozone, the customs union. They nest, they overlap, and they refuse to line up. EFTA sits partly inside the EEA and partly outside it. Switzerland belongs to some and not others. The diagram is not a drawing problem. It is a set-logic problem wearing a drawing's clothes, and every edge has to agree.

I chased one clean version of it for a while. ChatGPT went at it for twenty turns, admitted halfway through that this was about overlap logic and not image generation, changed approach, and still got the memberships wrong. Claude Opus, at its highest effort, had no idea where it stood and did not say so. It produced confident diagrams with quiet errors and left me to find them.

Fable 5 corrected the whole thing in one pass. It placed the nestings correctly, flagged the two or three points where a design choice had to be made rather than a fact looked up, and left me with minor aesthetic tweaks. It understood what kind of problem it was.

Then I noticed what it had done to the rest of my day.

## One pool

My subscription is one pool of usage. Every model drinks from it. Sonnet for the quick work, Opus for the harder thinking, and now Fable for the problems that defeat both. What Fable changed is the rate.

Fable is a heavy model. It draws down the pool faster than the others, roughly twice as fast as Opus for the same task. So the map did not cost me an hour of Fable. It cost me an hour of Fable and a chunk of everything else I might have done in that stretch. Nothing about the plan is different for Fable. It uses the same shared usage as every model. It just drinks more of it.

## The meter

When the pool runs dry, the work does not stop. It tips into pay-per-use, [the overage that runs quietly in the background](https://hoeijmakers.net/claude-plans-usage/) on my plan. This is not a Fable thing either. Any model does it once you pass the limit. But here the weight shows up a second time. Fable stacks up more tokens per task, each one billed, so the same job that felt heavy inside the plan runs up a bigger number outside it. Same door, heavier toll.

So the whole story is weight, in two places. It pulls the wall closer, and it makes the far side of the wall cost more. No special mechanism. Just a model substantial enough that you feel it coming and going.

## The shape

Which is a small shift in what a subscription feels like. The flat plan told you to stop counting, and a light model let you forget the pool had a bottom. Fable, by being both worth reaching for and costly to run, put the counting back. Not through a new rule, through plain capability. The best model I have is the one that made the meter visible.

I do not mind paying for it. The diagram was worth every drop it took. But I use Fable differently now than in the first week, more deliberately, a little more sparingly, the way you treat anything you have been reminded is not free. The strongest tool on the shelf is also the one I have started to save.

Every model on the plan shares the same usage. Fable is heavier: it uses that shared usage faster, and if you keep working past the limit on pay-per-use, it costs more per task than the lighter models.