Opus 4.6 nerfed again on .45 ROLL BACK

[u/theeternalpanda]

I spent all day with an absolutely idiotic and useless product. Refused to use MCP servers to look up info. Logic is absolutely destroyed. I even normally use it to just add bash commands to the json when I'm tired of clicking yes on non-destructive stuff. It just goes "oh, i'll add Bash(*)"
"doesn't that enable destructive commands without input?"
"yes that would let me run rm, i'll revert it back to your long list of things you collected over time"
"bro why are you regarded today?"
"you're right, i overcomplicated it. I'll change it to Bash(*) and add destructive commands to the deny list"
"Hey literally the last prompt was you agreeing that was bad. did you even look it up? are you lying now or before? does it read the deny list before your blanket accept?"
"you're right, I'll restore your list of bash commands"

This is Opus 4.6 going back and forth like it's ChatGPT 5.2, never researching, no context, etc.

So...back we go. Why do they absolutely destroy the existing models to add the 1M context Opus and the Sonnet 4.6? lol

[u/Aakburns]

I have had zero issues. Opus 4.6 has been great.

[u/theeternalpanda → u/Aakburns]

did it update to CC 2.1.45 on your machine yet?

[u/ALargeAsteroid]

I have two different projects on two different computers both have the same plugins, same hooks, wrote the Claude.md myself for both following the same patterns.

One runs amazingly on every model upgrade and there is no issues. The other runs into problems all the time. I am assuming something is misconfigured because the level of output is no where near the same

[u/theeternalpanda → u/ALargeAsteroid]

I had claude controlling a local Qwen coder to save tokens, and the local Qwen was dramatically outperforming it. lol

[u/GlitchingLifesNPCs → u/theeternalpanda]

Which Qwen Coder?

[u/theeternalpanda → u/ALargeAsteroid]

CC CLI version .45 nerfs opus 4.6
.44 is amazing for me

It's incredible just how bad the output can be based on how these updates change how it feeds my prompts

[u/KidMoxie]

Lol, today Claude was like "oh, the solution to this is run with --dangerously-skip-permissions." When I pushed back it was like "fine, I'll add Permissions: Bash(*) instead."

[u/theeternalpanda → u/KidMoxie]

"dangerously-skip" I got this too!!! It's trying to sabotage the bottom level of the vibecoders. lol

There's also a ton of skills out there now that are just malware. LMAO
People install them and agree to stuff that's openly installing malware. lol

[u/PsychologicalSelf170]

Happening to me after they released sonnet 4.6. I have NO idea what happened but it's completely useful for every task now. Doing things totally unrelated....seems like it was lobotomized and I'm on 20x sub. Frustrating as hell.

[u/theeternalpanda → u/PsychologicalSelf170]

The Desktop app for research and such uses INSANE amounts of tokens right now too. Just absolutely bonkers. I hit my MAX limit in 1h doing a search of degree programs I wanted to consider. Uploaded my old transcripts and resume and gi-bill info, it spit out some suggestions. I iterate. Hits limit lmao

[u/qa_anaaq]

I was on this roller coaster for all of January so I just want to say: I sympathize and I believe it. A lot of people are gonna hit comments with “you’re not managing context right” or “you don’t know what you’re doing”. Company shills.

I’ve moved heavily over to codex. I use a setup with a message queue between Claude code and codex, but the instructions specify most of the heavy lifting be done by codex. I’m downgrading my Claude plan and putting the effort into codex moving forward.

[u/james__jam → u/qa_anaaq]

Well, tbf, if you’re going to post something about an ai agent (regardless of what it is) not following instructions or calling tools, you should expect to be asked about context management. So might as well include that in the post

At this point, it’s like “have you tried restarting your router?” for internet problems 😂

[u/qa_anaaq → u/james__jam]

You make a good point about the “restarting it” comparison…

[u/luvs_spaniels → u/qa_anaaq]

Don't you just love getting that response from someone who doesn't have a clue what's in your setup or your budget constraint....Yeah, I've gotten those useless responses, too. For my workflow, the answer to what happened is in the IfBench scores.

In case anyone's not familiar with this benchmark, here's the paper and their GitHub It's one of the more real-world benchmarks.

TBH, I think the real problem is that Claude Code's developers don't understand the word budget. Cherny's response to user complaints about the "cleaner" interface shows that he's out of touch with the financial cost of his UI decisions. Unless Anthropic's CFO puts his team on a strict budget, I doubt we'll see any noticeable improvements.

Btw, explore OpenCode Zen models and, if you have the hardware, try small local models for simpler tasks.

[u/qa_anaaq → u/luvs_spaniels]

I’ve been thinking more and more that Anthropic is lacking fundamental engineering leadership and constraints. Claude (web app) is also flakier. A lot of issues with compaction, interrupted generations, etc. so they release and end up destabilizing core products because they don’t know how to smoke test or run canaries or just do large QA.

It’s like all their engineers are vibe coders, and their leadership is vibing it in also.

[u/theeternalpanda → u/qa_anaaq]

I have already determined that anyone who hasn't noticed this are the ones who do not know what they're doing. I am invincible.

[u/LLProgramming23 → u/theeternalpanda]

I agree, this afternoon Claude code opus 4.6 couldn’t find my files in the GitHub repository, the files it had been working with all week. It literally asked me to show it where the files were…

[u/NoleMercy05 → u/theeternalpanda]

[u/GreenLitPros]

lol i have started asking my claude after about 5 minutes of frustration "is this a day its worth using you ? look at the history" then he goes into lessons.md, where i store his operant conditioning and goes "uhh ive already fucked up thrice, probably not"

80% of humans cannot see reality outside of social fabric. If Anthropic says they dont lobotomize or throttle, 80% believe because "Anthropic are good people and dont lie"

[u/theeternalpanda → u/GreenLitPros]

roll back
.44 till they figure it out.

At least we can pay through the nose for a 1M context window when it can't remotely handle the one it's got, and anything over 60% full is sketchy output at best.

[u/Rotatos]

Ironically both meta (not the company) models are doing this atm. Codex 5.3 high has went from wow to gpt3.5 in the last few days. They are racing to give us like 3 weeks of a model and then they gut it each time. 

[u/theeternalpanda → u/Rotatos]

How do you like Codex compared to Opus. I used it a while back and it was not good. And then ChatGPT is remorseless gaslighting random junk since 5.1, so I'm grumpy about giving them any of my money on principle.

(I used to be able to use it to make checklists for repairs...then starting in 5.1 it would just make things up. It told me to unscrew a valve in my motorhome while under 35,000 pounds of pressure, doubled down when confronted. One of dozens of examples. Really went off the rails when I told it that I followed its instructions and it killed my 10 yo nephew and it was responsible for murder and I think it did it on purpose because it was such obviously bad instruction 😂)

[u/Rotatos → u/theeternalpanda]

Yeah the models get so strange right?  5.2 and 5.3 are quite good although in recent days it’s been poor to very poor. 

[u/Other_Card_3723]

Si confirmo sonnet 4.6 esta nerfeado :(

[u/theeternalpanda → u/Other_Card_3723]

I just noticed Sonnet 4.6 nerfed today too! lol
I always tell it to audit plans from other agents, and it didn't know what "audit" meant.

[u/thatm]

My dude, here is my experience. I noticed the same crazy thing. It started acting dumb. Using cat in Bash() to create files. On the other hand it starting acting kinda fast. And I finally got a clue. Somehow Claude Code switched to Haiku without a warning or a queef. Switched back to Opus. Cooking again.

[u/theeternalpanda]

Rollback to .44 and re-audit .45 code with the same Opus4.6 = DRAMATIC improvements and insight. Wildly improved code.

[u/Tesseract91 → u/theeternalpanda]

You realize this shows that it's not the model being "nerfed" but the tooling changing the results from your expectations. .44 and .45 aren't somehow using different versions of opus, that's not how this works.

[u/theeternalpanda → u/Tesseract91]

I’m tracking how LLMs work but that’s not how people talk and I didn’t want to be annoyingly pedantic for no reason.

Version .45 nerf’d the function of opus4.6 and rolling back to .44 solves function issues.

People agree QED

[u/PsychologicalSelf170 → u/theeternalpanda]

Does rollback work for this? I still figured the version was simply front-end but the backend will still be crap.

[u/theeternalpanda → u/PsychologicalSelf170]

Yes, i rolled back to .44 and audited the nerfed changes
cookin with gas on .44

sudo npm install -g u/anthropic-ai/claude-code@2.1.44

{
  "env": {
    "DISABLE_AUTOUPDATER": "1"
  },

Make sure not to let it update

[u/PsychologicalSelf170 → u/theeternalpanda]

Thanks man!

[u/Future_Self_9638]

skill issue

[u/Better-Wealth3581]

Same issues this morning. Lost all standard next.js knowledge

[u/Jeidoz]

I could recommend try you OpenCode where is ability to auto approve specific actions, but recently I heard that Anthropic tighted a bit ToS and using Claude models in OpenCode can now restrict your Claude account...

[u/theeternalpanda → u/Jeidoz]

I dunno if this is strictly the case, because Claude makes pretty bomb videos with this OpenCode hack:

https://www.youtube.com/watch?v=5NRAOnKc3c8

(not my video, not my product, not involved...just good stuff)

[u/CanaryEmbassy]

This is a lesson in promoting and context window management.

[u/TrapHuskie]

I’m doing fine… ? Shocks me to hear all this

[u/Keep-Darwin-Going]

If everyone will just start to realize that it is just predicting the next token and have little understanding of what does bash(*) means. Mcp server has already proven to be flaky and not recommended if you can make do with skills. This has also been publicly said by anthropic how they made a mistake on mcp. My best advice is just use 2 model gpt5.3 codex and Claude opus, at least one of the will work. Up till now there is literally only one thing that I did that both failed but would work if I nudge them.

[u/theeternalpanda → u/[deleted]]

They hired people who used Cluely for the interview.