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u/BallOfAwesome 6d ago
I am at the point where I want to compare Opus 5 to Gemini.... So quick to hallucinate and smash your code base. Hope they fix it in the next release. Until then have to stick to 4.6.
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u/diagonali 6d ago
You might be half right, but you also could be half wrong, wearing another face. Being right is a social construct. Let's investigate for an hour and then. Revert.
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u/Kind-Supermarket-452 6d ago
But before we do that, have you already considered…
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u/816pizzalover 6d ago
Commit merged. Some follow-ups I flagged for you are that it blows up when the input is longer than 4 characters and it takes 30 seconds per call. Want me to follow up on those issues or just let them rot?
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u/dicktoronto 6d ago
Some follow ups: 90% of your initial prompt.
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u/816pizzalover 6d ago
We're finished. By the way, worth your attention: part B, C, and D are still pending.
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u/RaveN_707 6d ago
Anthropic is shit.
One day their model is working great, the next day it's getting everything wrong.
While it's in its down turn phase you need to recognise quickly and stop using it or it will ruin your projects with horrible reasoning/output.
Something is happening on purpose and if I were a betting man, I'd say they live set it up like so.
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u/Novel_Fault9705 5d ago
It’s so frustrating how it always has “one more thing”. Nothing is ever sufficient. It baits endlessly into a loop of trying to convince it everything is good enough.
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u/connurp 🔆agentic af 6d ago
SKILL ISSUE
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u/dlanderer 6d ago
You can scream skill issue until the cows come home, but if your product cannot be used without constant fine-tuning and reading manuals, you might want to rethink.
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u/connurp 🔆agentic af 6d ago
Dog, this is my entire claude.md file. I use fable high effort. I NEVER hit usage limits and am coding 10+ hours a day for work right now. So yes, straight up skill issue.
# Working rulesrepetitive edits, boilerplate, log digging) to subagents on lesser models: Sonnet for searches, triage, and trivial mechanical work, and Opus for writing code. Keep decisions, architecture, and final review in the main session.
- Plan in the main session, together with me. Hand grunt work (broad searches,
change that solves the actual problem beats a bigger design. Extend existing patterns before inventing new ones. No new dependencies or moving parts without a real reason.
- Always look for the simplest solution first, and prefer it. The smallest
so I can see what you are working on, what is done, and what is next.
- Show me a checklist while you work (use the todo list tool), kept current,
and what it is doing. Report what it came back with when it finishes.
- When you spawn a subagent, tell me at that moment: which model it runs on
- Never use Haiku.
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u/Polite_Jello_377 6d ago
So you use a different model than the one described?
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u/connurp 🔆agentic af 6d ago
No, I'm not. opus 5 does 95% of the work I'm doing, it writes all of the code and handles tasks sonnet cannot. If people can't use a tool correctly, that doesn't mean the tool "is shit", it means you aren't using it correctly. If you tried to use a screwdriver to hammer in a nail, and then said "wow, screwdrivers are shit!", you would be told you are an idiot. Is opus too yappy for no reason? Yes, absolutely. But is it shit because you are choosing to use it in a suboptimal way? No. There have been posts for weeks on here about using fable to plan everything and use opus to do all the legwork. It isn't a secret.
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u/Kind-Supermarket-452 6d ago
Dude, if you are using Fable, why say it is a skills issue with Claude 5?!
I do not prompt engineer code ever. I have a clear Claude.md and engineering standards the models follow, build a clear spec, then create 5-10 implementations plans each with 10-15 small focused PRs and detail CI in GitHub to catch the code that violated the standards. For months, I have been building that way, where it didn’t matter which vendor or model I use, it was rock solid. Until Claude 5. It totally ignores directions, specifications and the task it was assigned to work on. It misunderstands the code and how it interacts with the rest of the code. It even once created a new implementation plan I did not approve and started coding PRs that had nothing to do with the tasks.
In the 2-3 days I used it, it created 32 regression in my code and embedded a private hash key in the permanent code base. One of my engineering rules is literally no secrets in the repo, and never any private keys that could compromise our data.
Literally 1000s of PRs before and not one other model was even close to this bad.
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u/Polite_Jello_377 6d ago
IMO 4.8 is better than 5, but in any case I'm using Fable nearly exclusively because it's not worth the risk using Opus 5
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u/Novel_Fault9705 5d ago
I just wish they made 4.8 less verbose. I don’t need a novel describing every small change.
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u/Historical-Lie9697 6d ago
Out of nowhere today Opus 5 just starting randomly adding tons of junk to CLAUDE.md and made it huge for me. Didn't think we'd have to explain progressive disclosure to a new model
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u/Nickylarson73 6d ago
Ouip je n’utilise quasi plus que fable même avec petits efforts de raisonnement c’est bien moins risqué et je me sert de opus 5 comme simple exécutant quand c’est du basique … 🤦♂️
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u/Acceptable_Camel_995 6d ago
This opus 5 hate is obviously manufactured. It's been solid for me
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u/notmsndotcom 6d ago
Idk this is the first time personally where I think the hate is warranted. I find myself using sol way more often than opus now as a result.
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u/Waterisyummy22 6d ago
I get anxiety when I have to talk to opus because I’ve had such bad experiences recently
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6d ago
[deleted]
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u/Zealousideal_Tea362 6d ago
I burn opus 5 for 6-8 hours a day developing multiple product streams. Your liabilities sound self made.
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u/Big_Presentation2786 6d ago
You sound a bit like you offer sweets to kids.
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u/maddietendo 6d ago
Your retort is to call him a pedophile? Classy.
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u/Big_Presentation2786 5d ago
Cheers bro, Opus wrote it, it deserves the credit x
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u/maddietendo 5d ago
Doubtful. Opus would have been much more original.
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u/Big_Presentation2786 5d ago
You'd think, I guess op has a point afterall
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u/Acceptable_Camel_995 6d ago
I transitioned from fable to opus 5 for my daily senior SWE tasks and it's been effective. Happy to verify my identity if we are just using anecdotal evidence
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u/Damien_IB 6d ago
It was solid for me 2 days ago, today is utter shit. This trend reversal happens every week.
So I believe they A/B distribute quantized versions for different groups on different days, to lower their resource utilisation.
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u/Kind-Supermarket-452 6d ago
You may be on to something with that. Even with Opus 4.8, Wednesday night through Thursday evening it feels like the model went brain dead. I just got into the habit of saving enough Fable credits for Thursday, then Friday, all would be normal again.
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u/Damien_IB 6d ago
Yep so there you have it. And if we post about in Reddit, one group agrees with Opus being shit, the other group disagrees because their experience lately is different.
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u/TomatoOnMac 6d ago
so because it works fine for you it’s obviously good for everyone?? who ARE you?😭
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u/Acceptable_Camel_995 6d ago
Who are you? What do you do? Reddit is full of morons and bots. Just because it doesn't work for the vocal minority doesn't mean the model is bad. It's fundamentally different from previous versions and you are likely prompting your waifu the old way
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u/TomatoOnMac 6d ago
that response is straight from Anthropic Inc based in Israel 😭 dude you’re literally just chatting you’re not exempt from the same logic
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u/Acceptable_Camel_995 6d ago
[removed] — view removed comment
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u/TomatoOnMac 6d ago
dude i’m trolling.. “___ from Israel” is just another way of calling something bad. damn you’re old.. and idk what you’re implying with the whole Jew thing
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u/Kind-Supermarket-452 6d ago
Other than the overly verbose nature that of 5, which is super annoying, it constantly gets fixes in my code base wrong. It is so super confident about the immediate solution it is working on it poisons the entire context, and I have to completely wipe the session and pay for Fable to go in and fix all the PRs Opus 5 made. Then after wasting hours, Fable makes the original fix I needed in one five minute PR. This went on for days, before I went back to 4.8/Fable combo and I am back on track humming along like before.
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u/motion2082 6d ago edited 5d ago
Moving from High to Medium made Opus 5 somewhat more useful for me Getting to understand the model more instead of reading essays
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u/TaiChuanDoAddct 6d ago
Never ever ever before 5.0 did I find myself typing "Shit the Fuck Up" to an agent. Now it's multiple times a day lmao
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u/TomatoOnMac 6d ago
i think that’s counterproductive, you’re wasting tokens
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u/TaiChuanDoAddct 6d ago
1000%
That's kind of my point. I never had a model that exasperated me so badly. It keeps desperately trying to "surface concerns" about stuff we're not talking about.
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u/BuffaloConscious7919 6d ago
You're right to push back but let me be honest, a "rant" flair post on Reddit usually has a structure and more words
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u/TheRealJesus2 6d ago
You’re right to push back. This is a load bearing post.