I’m a heavy daily user of claude and many other models but my primary driver is Opus5, and on the weekend a mix of Opus 5 and Fable. Now whenever I see these posts talking about how Claude is unusable now or going off the rails and all that every time there’s an update I usually would roll my eyes because I never experienced any of the issues that people always complain about. I always thought that that was because I have a pretty thorough and comprehensive guardrail or honesty enforcement system. A lot of just general watchers, redundancy checks, and guards and rules that keep a lot of hallucinations and other kinds of logic fails from happening. This is also for making sure that codebases don’t get overwritten, the agents stay on task, and they don’t start editing, adding things, and deleting things that they weren’t told to, etc. For the last 4 or 5 months up until now everything’s worked just fine. Suddenly in the last few hours both Fable and Opus have started ignoring crucial steps and rules that they have followed without fail every other time. This is a process that we do every day. It would start and both Fable and Opus were ignoring base crucial rules that keep them from messing up codebases and overwriting other agents’ work and things like that. It’s not a context rot issue either because I practice good context size diciplin and compaction summary supervision, and none of my chats context is any bigger than they are any other day, I usually either compact or start a new window at 475k - 650k. When I would then call Opus or Fable out, they would either cop to it or they would sometimes lie and blame another agent. When I told them to fix it and it still wasn’t fixed, they would say, “Oh you know what? It wasn’t an agent. I made that up,” because they told me that Codex did it. I would show them what models are running and Codex was not running for the last hour. It kept claiming that Codex kept deleting this part of a document that I kept having it try to edit and restore the parts that got deleted because I told it to add in a new section. When I checked it, the section was added but a whole bunch of other stuff was gone and it blamed it on ChatGPT. It couldn’t have been ChatGPT because it wasn’t running at the time and that’s when it finally caught fessed up to it and said, “Yeah sorry, that was me.” And that was Fable! and Opus was doing the same thing basically, It wasn’t blaming other agents but it was just messing things up. When I would call it out, it would say, “Oh no, things are fine. Just wait.” It kept telling me to just wait. I don’t know why. I would say, “No I need you to fix this,” and then it would run a bash or run a test to see if something was working. If it got no exit code, it would just keep running and running and running, not realizing that it would be frozen when in the past it would realize or it would have the common sense to set a timeout. All of this stuff has been happening more in the past three hours than at all in the past three weeks combined, so something feels pretty off/wrong. Is anyone else experiencing something similar? submitted by /u/Sherphican
Originally posted by u/Sherphican on r/ClaudeCode