PLEASE PUT OPUS 5 OUT OF ITS MISERY

The anti-Opus 5 drama did not start with this week's release. Since late July, multiple large Claude community threads have complained that the model can be capable and maddening at the same time: panicky, pedantic, prone to scope creep, too eager to overengineer, and harder to steer than Fable on long-horizon work. “INCREDIBLE CODER.” “REALLY PAINFUL TO WORK WITH.” · ONE USER TOOK BACK THE PRAISE.

The recurring complaint is not simply that Opus 5 is weak. One thread describes ordinary tasks producing long caveat-heavy explanations that make users dig for the answer. Another says minor nits, harmless ambiguities and stale requirements can turn into interruptions, goal reframing and elaborate new mechanisms outside the original acceptance criteria. USERS SAY OPUS 5 WON'T STOP TALKING. · “INCREDIBLE CODER.” “REALLY PAINFUL TO WORK WITH.”

Anthropic's own prompting guide describes two behaviors with a suspiciously familiar shape. It says Opus 5 verifies its work without being told and that legacy verification instructions can cause over-verification. The same guide says the model can expand the scope of a task, adding steps that were not requested, and recommends explicitly constraining scope for narrow work. ANTHROPIC PUBLISHED A WHOLE GUIDE TO PROMPTING OPUS 5.

Then came Opus 5.5. Anthropic's September 22 launch says writing and communication were among the most common areas of feedback on Opus 5, and says the new model is easier to understand at a glance, puts the most important information up front, uses less jargon, and follows writing rules more reliably. That is not an admission that Opus 5 was broken, but it is the company shipping direct improvements aimed at the same pain points users had been yelling about for weeks. ANTHROPIC ALREADY MOVED TO OPUS 5.5.

Not everyone hated Opus 5. A positive Anthropic community thread praised its cost effectiveness and output quality, and commenters argued that some of the backlash was a workflow or prompting problem. The split appears workload- and harness-dependent, which is part of why Opus 5 became a culture war rather than a clean benchmark verdict. NOT EVERYONE HATES IT: “I AM SHOCKED.” · ANTHROPIC PUBLISHED A WHOLE GUIDE TO PROMPTING OPUS 5.