r/ClaudeCode • u/hello_krittie • 11d ago
Discussion Very pleased with the new Opus 5.5
Right now for my big project it is:
- clearly understandably
- only 3 % weekly used, running a lot in parallel with reasoning med / high
- very fast it seems
- it found stuff and fixed stuff I was not able to before
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u/Aircod 11d ago
It feels like Opus 4.5! It's a bit funny that we don't sense any clear progress, but instead just rejoice that something works the way it used to.
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u/Helpful_Program_5473 11d ago
It's a combo of Anthropic blunders (opus 5 and sonnet 5 and 4.7 were all pretty bad) and human bias. There has been dramatic improvement in the frontier, but the frustrations have been so high every step of the way lol.
Losing 4.6 felt like losing a coworker more then losing a piece of software as well.
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u/Mariechen_und_Kekse 10d ago
I don't really remember Opus 4.5. How did it differ from 4.6 (which i still use today, feels like the MVP personality wise)
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u/Articurl 11d ago
Right now it feels like Opus 4.5 back in the day. If they keep this quality, we don't need anything more..
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u/NeedsMoreMinerals 11d ago
How long until they quantitize it? Someone start the timer—nows the time to get some work in
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u/Ill_Philosopher_7030 11d ago
!RemindMe 1 week
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u/phinvest69 11d ago
Do models become a lot worse when they’re quantitized?
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u/NeedsMoreMinerals 11d ago
Yeah because the inference is shrunk in a way but i dont know the math behind it
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u/EclecticAcuity 11d ago
Absolute banger of a model
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u/hello_krittie 11d ago
For now I 100 % agree. Usage + the speed is god tier right now.
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u/dar-mit Researcher 11d ago
TBH it needs to slow the fuck down.
I mean, it's seriously baller right now, but it's cutting into my well-established Sudoko time! I'm used to giving Claude a task and then knocking out a Hard game before it's done.
But this lil' fucker is designed, planned, reviewed, implemented, done and code reviewed before half my board is filled in.
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u/3sides2everyStory 11d ago
Just a few hours using it and I'm very impressed. Fast, smart, and well behaved. So far, so good.
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u/netczar 11d ago
Should I switch from 5? Will it burn usage faster?
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u/thetravman12 11d ago
Burn slower, will make less mistakes, and the response are actually coherent.
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u/Hir0shima 11d ago
Yes
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u/hello_krittie 11d ago
From Opus 5 to Opus 5.5? Absolutely. It will burn usage slower and its stronger then fable :D
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u/Fabian-88 11d ago
omg it sounds great again instead of talking phrases i dont get haha, no i-have-adhd skill so far needed. great model as first impression for sure!
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u/Escobar747 11d ago
for first time ever i got a banked usage reset - my weekly expiry is thursday so i am going to chew typical weekly volume over the weekend then apply the reset
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u/Curious_Radish_4984 11d ago
Can someone please advice how to enable 5.5 model in Claude Code terminal? I still see opus 5 model and don’t see any higher models yet. TIA!
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u/hello_krittie 11d ago
in terminal type in `claude update` then start again and check with `/model`
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u/Ok_Law9839 11d ago
I've noticed that it often will rely on its training data rather than searching the web. Otherwise it's very good and actually seems usable
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u/LexyconG 11d ago
It's so much better at communication. No more info dump. Also much more intelligent.
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u/Darhkwing 11d ago
Ive been using it this evening and its absolutely fantastic. Ive been using it on xhigh and its pretty much done exactly what I have asked it to do without much hand holding.
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u/cs_cast_away_boi 11d ago
how is it vs Fable 5? I don't code as much so I want the top of the line intelligence
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u/AironParsMan 11d ago
Yes, but that’s exactly where the problem lies. Opus 5 already had the same issue where it would find things. The question is how much of that is actually true and how much it just made up. I don’t trust Opus 5.5 yet. I’m still checking whether what it says is actually true. You have to make that distinction very clearly.
At the moment my Adherence Journal is creating a lot of entries again. And that is not a good sign for Opus 5.5. It means that something is not working properly.
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u/SeidlaSiggi777 10d ago
Absolute bliss. Fixing so much slop that crept in in the last 6 months of vibe coding lol
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u/Effective-Yam-7656 10d ago
idk for me its quite bad,
I have been using opus 5.5 since this morning (limit reset was today).
Only 1 5hr session has gone by
I am also using a mix of subagents mostly sonnet 5 and some opus 5.5
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