Why Top-Down Truncation Breaks AI Agents (And How Even-Span Fixes It)
This story is from 2026-09-27. It is preserved in the archive; the latest stories are on the live feed.
Most AI coding context generators have a hidden design flaw: they truncate long files sequentially from line 1 downward until they hit a token budget limit. If a file has 1,200 lines and your budget allows 400 lines, the model receives lines 1 to 400. Everything from line 401 to 1200 vanishes. In p…
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- 2026-09-27 18:43 · DEV Community — AI
Why Top-Down Truncation Breaks AI Agents (And How Even-Span Fixes It)