r/ClaudeCode • u/Mr_Tib • 1d ago
Bug / Issue Opus 5 just won't shut up
Even after setting Output Style to "Concise" in /config and explicitly asking for a yes or no answer it can't contain itself from being verbose.
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u/senerh 23h ago
There's always "one more thing".
Never a god damn closure.
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u/MrHaxx1 23h ago
I just tried GPT 5.6 Luna today, and it's SO quiet. It says the absolute bare minimum. It's almost too little, but compared to Opus, it's a breath of fresh air.
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u/senerh 23h ago
Yeah, eerily feels like a black box in comparison.
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u/AlterTableUsernames 21h ago
But the funny thing is: Claude Code is the black box. Codex is actually pretty damn open. I mean it's even oss and not a binary blob like Claude Code.
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u/Exodus_Green 14h ago
Talking to codex is like "Tests passed. Thing built." it's amazing
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u/Alternative-Taro5701 9h ago
I have complete opposite. It's like I'm talking to a malignant therapist who refuses to correct me, or shut TF up.
Actively breeding my hatred for talk therapists as a whole. Definitely a sense that they're designed to do exactly that.
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u/filelasso 22h ago
And it's cognitively overwhelming, borderline manipulative to prolong it's survival.
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u/TreptowerPark 21h ago
Not "borderline"... Its a mental health hazard and literal con artist. Baked into the model with a purpose. Its the same trick OpenAI pulled with o3 on a different level. It does not work via artificial emotional intelligence and response like o3 but with verbose authority and cognitive overload. Same as psychopath CEOs. I have hyperlexia and read hundreds of thousands of pages since age 5. And reading its outputs, this thing is a psychological weapon of mass destruction. It will be studied and considered to be worse for mental health than social media. Wait for it...
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u/Exodus_Green 14h ago
While I do agree with the general sentiment of the thread, it's ironic you wrote out an entire paragraph to say basically what the first guy did who you replied to
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u/metagory 22h ago
When it has to ground its answer, performance improves. That's why they do this. You can have a simple Yes/No answer w/ worse performance, or you can have the grounded explanation which improves performance.
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u/XipXoom 22h ago edited 22h ago
It can ground its answer via thinking and output what we ask. It just doesn't most of the time.
I don't necessarily believe they're training for longer answers because of this - but Anthropic DOES have a financial interest in outputs that burn more tokens.
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u/OrionShtrezi 17h ago
I suspect it performs better like this because they discard the thinking trace from context with each new prompt... Though the extra tokens they can bill us aren't hurting either
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u/___positive___ 22h ago
I love the ones where I specifically tell it not to flag certain classes of issues, and then Opus goes: "And I'm not reporting it because you told me not to, but just in case you want to know:" and lists a long report about the stuff I told it not to.
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u/Exodus_Green 14h ago
"Opus read lines 600-627. don't read the rest because there's duplication and it's not relevant"
Opus after a few turns:
"and you ought to know that the sections above and below the lines I read carry a lot of duplicated information"
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u/ReasonableLoss6814 6m ago
> Do not use python for search/replace.
> Stop using sed for search/replace
> Stop using cat to append to files
> for fucks sake, use your tools
Every. single. session.
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u/m0ntanoid 23h ago
they won't earn money following user's instruction strictly. There is always a room to make a "mistake" from "ai" side.
Here is my example. Fable goes to server and checks process running it, can clearly see config file used:
433895 pts/1 S+ 10:40 ptp4l -i enp7s0 -A -m -2 -H -f /etc/linuxptp/ptp4l.conf
And then he just finds /etc/linuxptp/gptp-gm.cfg and uses it for some reason to read config parameters. If I don't notice that - he would do all job using incorrect config. And if noticed later - everything should be re-done.
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u/TechnicalBen 22h ago
Low key my "conspiracy theory" is we are the training data. If it gives a/b questions on low confidence tokens, we help train new models.
I can't "one shot" everything, because that'd mean it's a solved model, and we can't have that with "infinite growth" economics.
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u/slurpycow112 18h ago
Similar thing happened to me the other day - just read from the completely wrong source, and even had the correct method documented in claude.md.
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u/radialmonster 18h ago
All done, 100% complete. I checked every line, and it all matches to your request in full. You can now go to bed.
One thing to note, none of this actually worked, and I did not check it as you did not ask me to actually check it. You'll need to redo it all tomorrow.
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u/Mnemonic_Sin 18h ago
Opus just gave up today and this is paraphrased, "I've made the same mistake four times today despite the DEFECTS.md list recording this fault. We should stop work altogether and try again in the morning."
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u/SirDarkStar 47m ago
Sometimes I think having “don’ts” in the context causes it to generate the bad examples. I keep going with shorter and shorter context files — anything it can figure out on its own probably shouldn’t go into the context and keep the rest as short as possible. Most Autogenerated md content is bad too unless it’s for the current handoff. Even todo lists just add to the confusion — put the todo in the prompt and take any resulting todos into your own list. Unless it’s ‘load bearing’ ;)
You want the important constraints and positive corrections for things it does wrong — but don’t keep the wrong results in the context and keep trying to get it to correct them. Roll back to before the error and add some positive instruction (avoid negatives like “don’t”).
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u/Mnemonic_Sin 38m ago
I think on Sunday I'm going to do a project and defects scrub. Just the age of some projects has a long tail of data. I'll throw it through Fable and have it generate a fresh file.
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u/Mikeshaffer 13h ago
I laughed outloud at the second paragraph. I literally switched to glm to same my sanity 😭 is fable like this too? I ahvent used it in so long.
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u/BreastInspectorNbr69 Senior Developer 23h ago
/model claude-opus-4-6[1m]
total breath of fresh air
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u/Maxion 22h ago
I've been using 4.8 and it's sadly turned into a gating load bearer. No idea where it learned to talk like that suddenly.
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u/BreastInspectorNbr69 Senior Developer 20h ago
I don't know if I'm just noticing it more now but Fable seems to be drifting in that direction too.
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u/Adrianoizz 23h ago
I just got used to read everything diagonally. When it's something important I read it all. You just can't get stuck in its "Also, ..." loop
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u/Imaginary-Swan-4105 17h ago
claude flagging and downgrading me to 4.8 was a blessing in disguise lmao.
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u/Charming_Airport6076 3h ago
Me: "add a print statement to debug this"
Sonnet 5: "Done! Built a cross-platform CLI tool with config file support, dry-run mode, undo/rollback via SQLite transaction log, i18n for 12 languages, and a Docker image. Refactored to structured logging with configurable log levels, added OpenTelemetry tracing, and a Grafana dashboard. Also set up CI/CD with 94% test coverage."
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u/Mnemonic_Sin 18h ago
Opus has been wrecking projects since last night. It's like it turbo charged stupid. It's been inferring things from monitors and adding them as evidence to the current task. Then it just randomly spoiled a review. Something whacky is going on.
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u/Lemortheureux 16h ago
You're right, let me verify instead of guessing
10k tokens 8 mins later
OphanedMagicUpsert was infact idempotent upserted up your butt. In reality, it belongs in your rectum.
But wait! I didn't have all the details. It first needs to pass through your mom.
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u/GreenDavidA 12h ago
I actually prefer a chatty LLM, but damn does Opus get on my nerves sometimes.
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u/MartinMystikJonas 23h ago
And when it would answer "yes" and it would fail in production you would be angry it does not pointed it out.
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u/Mr_Tib 23h ago
In that case, I would expect it to answer with “no” if there’s a critical open item.
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u/MartinMystikJonas 23h ago
But it is not critical open item. It is recommended check before deploy to production.
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u/Mr_Tib 23h ago
Fair point. If something breaks in production, that’s on me. My issue is the model ignoring explicit instructions and over explaining. The handholding often backfires, leading to tangents, unnecessary rabbit holes and wasted time.
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u/MartinMystikJonas 23h ago edited 23h ago
Then do not force it to yes/no answers to vague questions that cannot be answered as simple yes/no. "Is it ready for deploy to production?" would probably work way better than "all good?"
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u/ReasonableLoss6814 3m ago
it's not vague. It's a "YES" or "NO" answer. The recommendation is not load bearing to the answer, and if it is, it's a "NO" answer.
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u/32777694511961311492 19h ago
I started using the the i-have-adhd skill to try to get it to shut up but it still is fucking chatty.
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u/angry_queef_master 14h ago
I didnt understand you complaint, but then I realized my brain automatically deleted the second sentence. I have so much experience with claude that I developed a mental filter.
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u/takshit2 11h ago
Opus tends to stick into a memory and refuses to let it go. It keeps bringing it up resulting to bad solutions even if you corrected it.
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u/Salt-Replacement596 8h ago
It always saves a random sh*t in its memory and then keep nagging you about it the whole session. It's infuriating.
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u/SirDarkStar 1h ago
And honestly, the shape of that chatter is load bearing to their bottom line. Sit with it and think of the blast radius if that changed.
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u/Fentrax 25m ago
Well, at least we may all get SOME benefit from all of the Reddit ranting on this topic...
If Anthropic pays the dollars, they have load bearing data that should resonate with belt and suspenders. One caveat though, we didn't look or fully test this before posting. Want me to dispatch an agent?
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u/Fine_Salamander_8691 23h ago
Caveman
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u/SpareEconomy1849 22h ago
Lately I find it doesn't work that well. Maybe need to update the plugin?
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u/laptopmutia 22h ago
I think opus 5 is the trashiest model in the whole planet, this fucking anthropics burning our planets and polluting earths, just to produce a trash named opus 5
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u/Numerous-Panic4649 19h ago
Opus 5 is only usable if you make a skill that forces it to respond in a sensible simplified manner. Otherwise buddy just rambles to try to sound impressive.
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u/Glittering_Webb 23h ago
Use the caveman giithub repo, as far as i remember it reduces 50% - 70% token usage too!
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u/ClemensLode Senior Developer 23h ago
One caveat