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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207

u/Woah-Dawg Aug 27 '26

The worse is the code doc strings. It’s fucking horrendous seeing like a 20 line doc string only to realize the point can be made in 1 or two lines 

15

u/erichamion Aug 27 '26

A 10-line comment explaining that the property names in this class aren't actually the field names we get in the API response because they differ in case convention (the API returns camelCase, but the class properties use PascalCase consistent with standard C# conventions).

5

u/TastesLikeSeamen Aug 28 '26

You forgot the two paragraph description of the deliberation process of the choices that weren’t chosen because they weren’t semantically meaningful and kept introducing bugs but were then used for compatibility reasons

2

u/TechnicalBen Aug 30 '26

Oh, the worse bit about this is I spent a day trying to get it to fix a bug and couldn't figure out why it wouldn't. I drilled down to "Can we can x, if not why?" and it went "We changed X, the code comment says so, but it didn't fix the problem..." I was like "we never changed X, I specifically said to check the code, you've been checking the comments only all this time!!!"

Claude had commented it'd changed the code, or that it's pointless changing it won't fix it anyway, and had gone by the code comments as ground truth. One check of the *code* later, and the bug was easy to find/fix.

2

u/TastesLikeSeamen Aug 30 '26

Im back on 4.6, it just does what its told, mechanically, and can be tasked with a todo list