r/LocalLLaMAMay 20, 2026, 00:07 UTC+8

Cursor and Claude Code Are Not Getting Dumber; Agent Loops Are Suffocating Context

unpopular opinion: cursor and claude code arent getting dumber, their agent loops are structurally blind and suffocating your context window

A Reddit user says an API-log audit showed Cursor and Claude Code recursively grep about 40 files in 10k-plus-line repositories, sometimes load 2k-line files for 5-line edits, and spend roughly 30k tokens on tool definitions and logs before generating code.

Why it matters: HKR-H/K/R all pass: the hook is contrarian, the API-log numbers are concrete, and coding-agent context waste is a live practitioner pain. Reddit single-post sourcing and no shared logs keep it at the featured threshold.

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Take

Cursor and Claude Code getting “dumber” is the wrong diagnosis; the agent loop is burning the context budget before the model starts coding. The summary gives hard hooks: in 10k-plus-line repos, the tools recursively grep about 40 files, sometimes load a 2k-line file for a 5-line edit, and spend roughly 30k tokens on tool definitions and logs. Reddit returned 403, so I cannot inspect the raw API logs, sample size, or repro steps.

This matches a pattern across coding agents: stronger models make wrappers lazier about retrieval discipline. Cursor and Claude Code often fail less because Sonnet or Opus forgot how to code, and more because irrelevant files, verbose tool schemas, and execution logs crowd out the useful state. Vendors sell autonomy; practitioners should ask for retrieval bounds, file summarization, and log compression before another model-name upgrade.

Source: r/LocalLLaMA · reddit.com
Published: May 20, 2026, 00:07 UTC+8 · May 20, 2026