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A simulation shows that a code agent can do too much work

In one example, the agent has a good test result on turn 4 of 11, but its patch has 8 changed lines. The reference patch has 2.

Claimed, not confirmed

One run that passed: six of eight changed lines unnecessary A run that passed in 11 turns changed 8 lines across 3 files. The reference fix was 2 lines in 1 file, so 6 of the 8 lines were unnecessary. The pass/fail score is the same as a clean run. One run that passed 11 turns Tests passed turn 4 6 of 8 changed lines unnecessary Reference fix: 2 lines Unnecessary: 6 lines 3 files changed Reference: 1 file Pass/fail score: same as a clean run
One passing run changed eight lines across three files. The reference fix needed two lines in one file.

Sources

  1. Coding Agents Can Solve the Task — But How Much Work Did They Waste?towardsdatascience.com
AI MATTER · NEWS · AI MATTER · NEWS ·13 OCT2026

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