Don't trust large context windows (garrit.xyz) AI

Garrit argues that LLMs have a “smart” attention region and a “dumb” region within the context window, so advertised context sizes (100k+ to millions of tokens) are often mostly marketing and effective performance drops as the window fills—especially for coding agents. The post suggests avoiding the degraded part by restarting sessions and handing off stable written artifacts (specs/plans/skills) rather than relying on auto-compaction summaries that occur after degradation.