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This delegation approach is working well — Simon is getting a lot done and his Fable allowance is shrinking less quickly than before.

Since adopting the judgement-based model-delegation approach, Simon reports strong productivity with slower depletion of his Fable token allowance. ✦ AI generated

Simon Willison · Simon Willison's Weblog · 2026-07-03 · original ↗

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Design, auditing, data synthesis, and anything judgment-heavy stays in the main model. See also [[project-goals]]. So far it seems to be working well. I'm getting a ton of work done and my Fable allowance is shrinking less quickly than before.

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✳ Fable

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supports → For all coding tasks use your judgement to decide an appropriate lower power model and run that in a subagent.Simon Willison · Simon Willison's Weblog gives example → Users can spend up to half their weekly usage limit on Fable 5, then either pay with usage credits or switch to another model to stay within their remaining limits.Anthropic · Simon Willison's Weblog