Claude code’s plan mode began its slow march towards deprecation when they hid the “clear context and implement” option behind a flag. From the discussion at that time it seemed that the developers considered it mostly a legacy feature, and that newer models are smart enough in long context not to need it.
There's some pretty interesting evidence that this feature actually just increased costs: <a href="https://stencil.so/blog/prewalk" rel="nofollow">https://stencil.so/blog/prewalk
nojs · · focus · HN ↗
CGamesPlay · · focus · HN ↗