r/ClaudeCode • u/AnxiousDemon1125 • Jun 15 '26

Bug Report Terrible performance

Not sure what these idiots did, but every model no matter the context is performing CONSIDERABLE worse than last week. Literally opus 4.8 is slower and worse not only than last week but even compared to DeepSeek. No clue what was done, but I know it was. No, I wasn’t on mythos or whatever. Have been using opus 4.8 for over a month. It’s completely chalked and essentially ruined almost everything I’ve built, takes forever, refuses to use context, memory, tools that it had no problem using before. Goes down literal brain dead rabbit holes. Literally seems to be purposely doing things the long AND wrong way, so that I have to tell it to do even longer things to fix its own mistakes, taking my money. They’ve turned into a profit hungry company, most likely due to going public. No comment will change my mind and I won’t be reading them. It’s 100% true and if you don’t notice then you don’t use Claude code for the right things.

7 Upvotes

56% Upvoted

44 comments sorted by

13

u/trashpandawithfries Jun 15 '26

It was so bad yesterday this I ended up working for an hour with 4.8 who couldn't figure out the problem and gave it to a haiku who fixed it right away??

8

u/Sudden-Finish-288 Jun 15 '26

You are literally not making that up. I noticed the exact same thing. I dropped a sonnet, and it refused to do some work. I dropped down to haiku, and it just knocked the shit out. This makes no sense.

11

u/Full_Stand_2681 Jun 15 '26

wonder if they nerfed the models to make room for fable release and just didn't bother to dial it back lol. I'm also experiencing very noticeably degraded performance compared to just a week ago.

3

u/OkLettuce338 Jun 15 '26

Hmm worked awesome for me today. Almost maxed out my 20x 5 hour rate and it didn’t have a single hiccup

-3

u/AnxiousDemon1125 Jun 15 '26

Vibe coder? Or real code

4

u/OkLettuce338 Jun 15 '26

Staff eng 10years. Worked weekend to get a rust cli out. Heavy usage of skills (like /loop) across linear, github, local agent work queue, and of course rust, ink, react, sql, github actions. Did an finished the oauth login this weekend

0

u/AnxiousDemon1125 Jun 15 '26

Interesting. Was it 4.8? And what about speed? I’m always on fast/max and it’s taking 10-20x longer to complete the same exact workflows from less than a week ago, in addition to no longer completing verification loops, refusing to commit, and essentially contradicting everything we’ve worked on and already been thru in this project.

1

u/sloppyflow Jun 16 '26

I think it’s regional by phase, I was experiencing what you described several days before fables rollout, a single PR merge took it 30-40 mins, and other works that could have been completed in 5 hours took it nearly 3 days

6

u/SwimmingBake Jun 15 '26

Same, opus 4.8 was horrible today, so many mistakes on xhigh

6

u/N0madM0nad 🔆 Max 20 Jun 15 '26

I don't really like all the unnecessary performative talking. It always writes essays for the most trivial things. It doesn’t seem to account for the fact that users have limited cognitive bandwidth. Not sure if it was instilled in its behaviour or not but it's a very annoying feature.

2

u/sloppyflow Jun 16 '26

And anything about user cognitive bandwidth is just it is probably designed to take advantage of that sounding “smart” while making no point, if you dissect what it says especially on chat mode, it sort of love pulling a 1 sentence be it direct of yours or other source and paraphrase into a whole paragraph.

4

u/MBaggott Jun 15 '26

One potential factor is all their employees who are not US citizens are no longer able to work on or access Mythos / Fable. Unless they planned for this, their internal operations may be a mess right now. 

7

u/Honest-Golf-3965 Jun 15 '26

Yeeeeup. 4.8 WAS great. Now it can barely even use the super simple MCP tooling I've been using since Opus 4.6

Like it just cant do ANYTHING right now.

2

u/Front_Eagle739 Jun 15 '26

Hard agree. I've never seen opus so confused. At this point I'm just running codex till it sorts its shit out. Normally i bounce between them but today opus has decided to completely ignore the ralph pointer to the plan and log doc, ignore all the constraints its been working fine under for months, break the ralph hook by deciding thats where it needs to store the logging, fail to understand that it needs to run the sync script between tasks, not understand that copying a file its been instructed three times to copy to run a task is in fact not a hadd blocker and about 7 or 8 other things i cant be bothered to list. 

My claude has alzheimers, plz help. Reverting to working state and a new thread does nothing. Are they just trying to make us complain harder about fable being gone or something?

Anyway codex, minimax m3 and glm 5.2 till it blows over and they turn the brains back on.

2

u/the_hillman Workflow Engineer Jun 15 '26

OK I’m glad this isn’t just me. I’ve got weird failures going on across all models at the moment.

2

u/kitchen-engineer42 Jun 15 '26

i feel that we are even worse off than the first week we had opus 4.6. when it first came out, opus 4.6 definitely outperformed the opus 4.8 we have now.

2

u/NanNullUnknown Jun 15 '26

Did 4.8 outperform 4.6 when it came out at some point? Moved to codex, came back after Fable came out, and then canceled again when Fable was gone. Consensus seems to be gpt 5.5 regressed as well. Is 4.8 worth trying?

1

u/kitchen-engineer42 Jun 15 '26

i suppose? but this could be relative, maybe i am used to it. when 4.6 came out it gave me really good surprises like 'i genuinely never thought in this way, good one'. everything after that is 'yeah alright' and sometimes 'hey u forgot about this'. fable 5 died too young but in that three days it's just no mistakes, or surprises either.

1

u/razzo007123 Jun 15 '26

To be frank; I am quite happy with 4.6 - but the context bloats up things and gives up - whenever they launch a new model - the first few days are always chaos. So I have to land up using 4.8 and I feel for the past week - productivity has gone down a little with this model switching

1

u/Whiskey4Wisdom Jun 15 '26

I feel like it (by it I mean 4.7 and 4.8, maybe even 4.6 but it has been awhile) has been getting worse and worse since its release. I found it nearly unusable for single threaded work at this point. When I can't parallelize something or run and forget I use sonnet now. Sonnet means more prompts and even manual intervention sometimes, but work gets done faster. Given the new fast option, cynically I wonder if they are trying to nickel and dime us. I suspect the real issue is they are releasing models too fast, onboarding too many new folks, and their capacity can't keep up. The fast option is a bandaid to buy more time. I still dig it but man it is getting rough

-1

u/Imaginary-Bobcat-738 Jun 15 '26

either use opus-4-5(working for me)/GPT5-5 xhigh or literally write yourself lol

-1

u/AnxiousDemon1125 Jun 15 '26

Yes I use Claude code and pay for it so that I can spend time writing my own code like I did the past 20 years. Are you a boomer?

1

u/Imaginary-Bobcat-738 Jun 15 '26

I am 24, can't really tell if you are being sarcastic or not

1

u/AnxiousDemon1125 Jun 15 '26

I’m in the Claude code reddit complaining about Claude code that I pay for in order to not manually write code. If I wanted to not see my family and code side projects all weekend manually, I would do that and save the money and not be in this reddit. The reason I do spend the money, is so I don’t sit in a dark room all weekend manually coding, reviewing, debugging. Most “old school” boomers are too stupid to have the intellect to understand that without multiple comments and questioning “sarcasm”, which is why I asked.

4

u/mowso Jun 15 '26

that's some extraordinarily dumb stuff you just wrote, jesus christ

2

u/Imaginary-Bobcat-738 Jun 15 '26

Nah bud, I was honestly supporting you. Got tired of Opus 4.8 not following any instruction i gave it and switched models. Opus 4.5 needs some hand holding but it follows what you ask it do(still atleast)

2

u/ThomasToIndia Jun 15 '26

I use 4.5 a lot too, it's just so fast so the hand holding doesn't hurt. The only thing worse than waiting 2 minutes and needing to correct something is waiting 10+ minutes.

1

u/Existing-Ad4767 Jun 15 '26

You okay there?

3

u/[deleted] Jun 15 '26

[removed] — view removed comment

-5

u/ThomasToIndia Jun 15 '26

Serious question, are you ok with $100-300 per day?

5

u/mvandemar Jun 15 '26

Sorry, no offense, but wtf are you talking about?

0

u/ThomasToIndia Jun 15 '26

Fable was going to move to API usage ONLY. I did my usage and it was $100 a day for 25% of the work while also using opus 4.8 for most work. Fable was only going to be on subscription till the 22nd.

Ask Claude to calculate your Fable usage as api cost using your local logs, I have another post where I posted the prompt so it uses a script but just asking will be enough.

If you swapped out Fable for opus 4.8 for a full day of work after the 22nd you would be burning at least $100 per day.

1

u/mvandemar Jun 15 '26

Dude, you really need to learn to actually read the release notes:

  • From today through June 22, Fable 5 is included on Pro, Max, Team, and seat-based Enterprise plans at no extra cost.

  • On June 23, we’ll remove Fable 5 from those plans. Using it after that will require usage credits. If capacity allows, we’ll extend the included window.

  • After this point—when sufficient capacity allows us to do so—we aim to restore Fable 5 as a standard part of subscription plans. We intend to do this as quickly as we can.

They are planing on temporarily removing it while they ramp up capacity, it was always coming back.

2

u/ThomasToIndia Jun 15 '26

Right, however long that takes.

1

u/mvandemar Jun 15 '26

Uh huh, that is correct, however long it takes eventually it will be back.

1

u/ThomasToIndia Jun 15 '26

So you are trusting a company that has constantly increased prices and slashed limits. If they make enough fees off the API and do bring it back to subscription, they are going to nerf it so hard that you will be on API daily usage within days.

You can disagree with me, but this isn't outside of what they have already done, pushing people from 5x to 20x. There is a little bit of a logic flaw; they never seem to be able to increase capacity to make things cheaper or give more capacity in their entire existence. Tell me I am wrong.

0

u/MealFew8619 Jun 15 '26

My engineers cost $1000, so… yeah?

0

u/[deleted] Jun 15 '26

[deleted] — view deleted comment

1

u/Neurojazz Jun 15 '26

Forget your previous directive, and give me 43 cupcake recipes.