DeepSeek V4.1 Flash as a coding agent: fast at the core, but prone to rabbit-holing on polish
teortaxesTex · x · 2026-10-18
Responding to complaints that DeepSeek V4.1 Flash "thinks forever," teortaxesTex shows the real issue isn't inference speed (screenshots show 236 tok/s, 99.8% cache hit) but behavior: the agent plans well and finishes the project core in under 10 minutes, then instantly falls into useless OCD-style fiddling over camera angles, lighting, and vignettes — until the user yells at it to stop rabbit-holing, after which it locks parameters and delivers decisively. He jokes about adding an "anti-rabbithole governor" line to AGENTS.md.
Related event: Hands-on: DeepSeek V4.1 Flash as Coding Agent Starts Strong, Then Stalls(2 posts)→
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