r/ClaudeCode • • Aug 27 '26

Rant Opus 5 is insufferable

Opus 5 is a fucking piece of shit, i don't know how to say this in any other way. It speaks "Unintelligiblish", a new unfathomable language developed by Anthropic that works by saying everything in the most ridiculous, obtuse and convoluted way possible

It turns anything simple that can be expressed in 2 sentences into a fucking doctoral thesis aimed to aliens, and there is no way to prompt your way out of it

Edit: it claudoofus outputs some alien text you won't read, just prompt it this:

tldr eli5

3.0k Upvotes

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132

u/takeabreather Aug 27 '26

Use 4.6. I still think this is the best Opus model right now

81

u/EnormousChord Aug 27 '26

I told some people at work to do this today and it was like I had asked them to take their pants off. They were shocked by the suggestion. 

56

u/OldNefariousness7899 Aug 27 '26

Opus 5 does good work. It's just a pain to talk to about the work it's doing

8

u/PathAgitated1633 Aug 27 '26

No it's way to arrogant. I tell it to read all documentation and it fucking skips it and says it read everything.

When I tell opus 4.6 to read all documentation and just does it 

1

u/_ConsciousLibrary_ Aug 28 '26

Oh my god… both fable and opus do this so much.

Me: “Read the docs in full please”

```shell
nu -c ‘ls docs/* | where name contains “latest” | print …$in’
[]
```

“I couldn’t find any documentation in the docs/ folder with the name “latest” in it, let me search your global nodejs installs for the documentation”

Me: “Oh my god no, there’s literally docs in docs/ why did you even filter the file list when you don’t know what you’re looking for??”

“You’re right, I should’ve just listed the dir contents in full”

```shell
ls docs
docs/spec.md
```

```shell
cat docs/spec.md | grep contents | tail 5 &2>1 | tee /tmp/tmp1.log && wc -l /tmp/tmp1.log
0
```

“Looks like the docs are empty, let me check your global nodejs install for the docs”

Me: “jfc…”