DeepSeek V4.1 Flash is an overthinker: fixes bugs in 50 seconds, then obsesses over visual testing

teortaxesTex · x · 2026-09-11

A hands-on observation of DeepSeek V4.1 Flash while coding: it's an overthinker — it fixed another DeepSeek session's trivial errors in under 50 seconds and already verified the fix, but then proceeded to obsess over visual testing. The author notes that in some situations this thoroughness may actually be useful.

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