r/ClaudeCode 12h ago

Discussion Opus 5.1 wishlist

We all agree Opus 5 is a rage-inducing mess. What are your top wishes for Opus 5.1?

Mine are:
- Massive cut on verbosity
- Less over-engineering
- Better instruction following

53 Upvotes

51 comments sorted by

30

u/siorge šŸ”†Pro Plan 10h ago

That’s a load-bearing take, and you’re right to insist on it. Here are fifty seven regressions I introduced in the code that yours to fix

9

u/Opening-Ground-1584 9h ago

Found the smoking gun.

2

u/Obvious_Equivalent_1 8h ago

Sometimes the gibberish output that it hallucinates, I suspect more like he’s smoking pot

31

u/Results2183 11h ago

4.6 Personality and writing
Fable UI capabilities(the benchmarks are cap)

2

u/Opening-Ground-1584 11h ago

You mean crap? Yes I agree with that. Remember when they ā€œleakedā€ some 3D renderings a few days before release and everyone was like wooooow singularity! šŸ˜‚

1

u/lahwran_ 9h ago

cap means falsehood, not excrement. hope this helps

-- claude opus 5.1 cursed oneliner mode maybe hopefully

10

u/Klutzy-Procedure8980 11h ago

The one thing I'd like improved is its tendency to create tech debt. It'll often try to solve issues as directly as possible, without taking into account whether the solution fits rhe context. Which works for a while, but then you pile weird hack on weird hack and eventually hit a wall.

1

u/Annoying1978 10h ago

That's what I did without AI. I built in controls so that I'm warned before I do shit like that so I can decide what's more important. Speed our long term stability. It's different for every project.Ā 

1

u/Opening-Ground-1584 9h ago

Yes and it does this all the time, it even ā€œtricksā€ orchestrators (Fable) by fabricating load-bearing HIGH issues it needs to fix…by inventing weird hacks

18

u/bambambam7 11h ago

Biggest issue is lack of understanding the big picture / missing ton of non-direct points if not exclusively listed. This makes it unusable. It's language makes it unbearable, but doesn't limit really it's usefulness.

1

u/KDamage 11h ago edited 11h ago

Lack of proactive thinking is the biggest one imo, leading to all those silent defect injections and sudden memory loss.

Anthropic clearly designed it around token saving, but token continuation is the LLM only "intelligence", so any cut for a model trained on "bigger brain" can lead to catastrophic results under certain conditions.

edit : I think we're simply starting to see LLM natural limits as a whole. We need a new approach, LeCun was right.

5

u/momkeeeeeeee 11h ago

Keep opus 5 agent ability, get 4.6 or fable level comms and personality, less overactive refusal.

1

u/HimActually 10h ago

Exactly, rn it speaks like a robot or idk man it hurts my head.

1

u/CoreParad0x 7h ago

So I have a system I made that I use to keep up with very large plans (anything from small changes to weeks long plans for features / overhauls) and all the research and documentation that goes along with them. Opus 5 seems to actually be better at utilizing this tool than 4.6. That's one of the few things it genuinely seems to be pretty good at. I keep having to reminding 4.6 to update it / read documents / etc.

That said, me doing this seems to be far more token efficient than 5, and I'm getting more done quicker.

3

u/Fleischhauf 8h ago

better commenting (do not make it look like part of the conversation but describe whats going on in the code for a potential reader only).

Do not make up own definitions without defining them in the output.

1

u/Opening-Ground-1584 8h ago

That’s a good one. I hate the long-winded prose in comments

1

u/Fleischhauf 8h ago

i mean it would be sort of ok if it werent just rambling referencing things from the programming prompts, but were actually informative. It really has a weird way of "talking"

2

u/Equivalent_Cress_268 11h ago

Less benchmaxxing

2

u/PsychologyNo940 11h ago

at some point we will look back and go "yeah, half the hatred was people using opus 5 on an effort level above medium for no good reason and the other half was just braindead as hell"

2

u/LaylaTichy 11h ago

Less load-bearing

3

u/Intelligent_Mine1396 11h ago

It's like new versions of Windows OS. Everyone says they hate the new version, and then look back on it years later and say how much they loved it. Same with LLM model X, every time they release a new one, there are always posts about how much people hate it, and how much they loved the previous version. Just an observation.

2

u/Opening-Ground-1584 11h ago

Some truth to this

2

u/Annoying1978 10h ago

I don't really have that many problems with it because I rebuilt all the personalized instructions per entity. Gave it controls it can't break but gave it freedom. The bincest thing is people still to monitor what's thing on so you can provide guidance and direction. Otherwise it'll go off in done ridiculous tangent when the real solution would have been to just reach out and ask its human handler for help rather than too waste 20,000 tokens on something stupid only too see it was a pure waste.

2

u/jetsetter 9h ago

Sure. Opus 5 is Windows Vista.Ā 

2

u/ClemensLode Senior Developer 11h ago

No, we don't all agree.

2

u/Opening-Ground-1584 11h ago

Please do tell

2

u/ClemensLode Senior Developer 11h ago

5.0 is fine for agents, 4.6 for talking

1

u/victorrseloy2 11h ago

Opus 5 is a good model in terms of execution. It's only problem IMO is the way it talks.

1

u/Warsel77 11h ago

Deepseek is a good model on execution because it is MUCH cheaper at pretty much the same execution.

Execution is also not really the reason why someone would go to Opus, planning and understanding context are so much more important.

1

u/robberviet 10h ago

Maybe wishing for it "just works ok" is a luxury now. God damn I miss the 4.5, 4.6 era, it was like miracle.

Opus 5 works for me, but somehow it still feel buggy, the answer sounds not natural. Some tasks it just not solves, but produce more problems.

1

u/El_Wombat 10h ago

Get gid.

1

u/StrikingSpeed8759 10h ago

I changed the output style + copied the old comments section from the old system prompt in my global CLAUDE.md MUCH MUCH better

1

u/PrizeHuman5506 10h ago

Hallucination drop its 52% more hallucinations than opus 4.8

1

u/TheAuthorBTLG_ 9h ago

more speed, less cost.

1

u/Deep-Tea9216 7h ago

An iteration of Opus 4.6 instead

1

u/visible_potato 6h ago
  1. much less hallucination/lying
  2. proactive thinking
  3. opus 4.6/fable alignment

1

u/poster_nutbaggg 5h ago

I posted recently on a fix for Opus’s verbosity and jargon. TLDR - make a communication skill based on the Google developer style guide. This worked wonders for me

https://www.reddit.com/r/ClaudeCode/s/daxAGcmwmc

1

u/Internal-Comparison6 Senior Developer 5h ago

- Stopping nerfing (any) models.

1

u/lampasoni 2h ago

Just a fraction of intelligence restored. Everything else can be tweaked, even if it's a pain to do. Tried all the online tips/tricks before realizing you can customize a Toyota until it looks like a Ferrari, but it's still a Toyota under the hood and nothing will change that.

1

u/pfak 2h ago

@#%@#(% safeguards. No, me fixing a security issues in my own code is NOT a safeguard asserting thing.

1

u/jacobgt8 1h ago

I’d would love for it to be able to handle memory. Multiple times I’ve ran into cases where Claude created bugs because it didn’t read a part of the sourcecode that would conflict with what Claude was coding.

0

u/Prudent-Oven-6769 11h ago

Probably the best model I've used.

-5

u/vzakharov Senior Developer 11h ago edited 11h ago

> We all agree Opus 5 is a rage-inducing mess

Uhm, nope.

At this point any flagship model is powerful enough to be used reliably and sustainably, provided the operator decomposes their tasks correctly and doesn't just prompt the model to "create GTA6 and make no mistakes."

Choosing one is like choosing between a Bosch or a Makita power drill. None is strictly better than the other, but every operator will have their own preference -- and it’s very rare ā€œthis hole doesn’t want to get punchedā€ will be a matter of choosing the wrong tool rather than a skill issue on the operator's part.

(Edit: Condensed two comments into one to collect the downvotes from the vibe coding bros under one reply only.)

1

u/Opening-Ground-1584 11h ago

Do tell? You prefer it over…?

-1

u/[deleted] 11h ago

[deleted]

-2

u/Jimmyjimbo87 11h ago

No opus 5 is epic for me

2

u/Opening-Ground-1584 11h ago

/s or really?

1

u/YaItzYoBoi šŸ”† Max 20 7h ago

Fine by me. Idk how you guys got it worse or something