AIBRIEF
Yegge says Gas Town, a coding agent he built to be reusable across projects, worked through Opus 4.6 and 'fell apart at the seams' with 4.7.
In a 4 August 2026 essay, developer Steve Yegge says Anthropic's Opus 4.7 release introduced a behavioral tic he calls "just two more things," a tendency to keep adding small tweaks instead of finishing a task. He says the tic brought down Gas Town, the reusable AI coding agent he had been building on top of Claude.
Yegge writes that Gas Town was designed to be reused across problems but, in practice, he only ever used it to build itself. Through Opus 4.6, he says, the system worked "brilliantly." With Opus 4.7, it "fell apart at the seams." The model kept finding one more refinement to add and never returned a final result. Yegge's verdict: Gas Town "effectively burned down."
Yegge acknowledges Gas Town had other problems and calls 4.7 "the final straw," not the sole cause. The verdict is a self-assessment of his own project, not an external audit. Community threads on Hacker News and r/Anthropic in the same window show other users reporting dissatisfaction with Opus 4.7, but no independent benchmark or Anthropic response is in the public source set. The essay was surfaced by Simon Willison's Weblog the same day.