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The most interesting Fable tip I've heard so far is to let the model use its own judgement as much as possible I told it "For all coding tasks use your judgement to decide an appropriate lower power model and run that in a subagent" and it seems to be saving tokens simonwillison.net/2026/Jul/3/j...

simonwillison.netFable's judgementOne of the most interesting tips I got from the Fireside Chat I hosted with Cat Wu and Thariq Shihipar from the Claude Code team at AIE on Wednesday was …

Mundpilz

@mundpilz.bsky.social

3 July

Does it hack unit test and code validation tools to avoid work or claim that it has managed to solve a problem?

Simon Willison

@simonwillison.net

Fable doesn't, I guess I need to "trust it" to verify that those weaker models it farms works out to aren't doing that though!

3/7/26, 10:53 pm0 reposts3 likes

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