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Issue: Claude Code is unusable for complex engineering tasks with Feb updates

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541–550 of 829 posts

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#541

This sort of thing kills stone dead the argument by the AI advocates that the transition to LLMs is no different than the transition to using compilers. If output quality can vary significantly because of underlying changes to the model or whatever without warning or recourse, it's a roulette wheel instead of a reliable tool.

If roulette wheels weren’t reliable tools, casinos wouldn’t offer them to their customers

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#542

Hey all, Boris from the Claude Code team here. I just responded on the issue, and cross-posting here for input. --- Hi, thanks for the detailed analysis. Before I keep going, I wanted to say I appreciate the depth of thinking & care that went into this. There's a lot here, I will try to break it down a bit. These are the two core things happening: > `redact-thinking-2026-02-12` This beta header hides thinking from th…

I only ever use high effort, the only thing I've run into sometimes I ask Claude to do every item on a list of items, and not stop until they're all done, it finishes maybe 80% of them then says "I've stopped doing things" for no reasonable reason. I don't need it to run for 18 hours nonstop, but 10 or 20 minutes more it would have kept going for wouldn't have hurt, especially when I am usually on Claude Code during…

I’ve been playing with

    /loop 5m check if you have any actionable tasks 
for this scenario.

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#543
post #52

I am just waiting for everything to implode so that we can do away with those KPIs.

Well, this event indicates that it won't implode anytime soon. I'm certain that they messed with the model and default settings so they could reduce compute. The world doesn't have enough compute.

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#544

That analysis is pretty brutal. It's very disconcerting that they can sell access to a high quality model then just stealthily degrade it over time, effectively pulling the rug from under their customers.

Did anyone ever expect anything different from modern tech companies? This will only ever get more expensive and worse in quality.

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#545

Earlier quoted context omitted.

I just asked Claude to plan out and implement syntactic improvements for my static site generator. I used plan mode with Opus 4.6 max effort . After over half an hour of thinking, it produced a very ad-hoc implementation with needless limitations instead of properly refactoring and rearchitecting things. I had to specifically prompt it in order to get it to do better. This executed at around 3 AM UTC, as far away fro…

That's pretty much been my day - today was genuinely bad, and I've been putting up with a lot of this lately. Now on Qwen3.5-27b, and it may not be quite as sharp as Opus was two months ago, but we're getting work done again.

Literally two weeks ago it was outputting excellent results while working with me on my programming language. I reviewed every line and tried to understand everything it did. It was good. I slowly started trusting it. Now I don't want to let it touch my project again.

It's extremely depressing because this is my hobby and I was having such a blast coding with Claude. I even started trying to use it to pivot to professional work. Now I'm not sure anymore. People who depend on this to make a living must be very angry indeed.

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#547

Hey all, Boris from the Claude Code team here. I just responded on the issue, and cross-posting here for input. --- Hi, thanks for the detailed analysis. Before I keep going, I wanted to say I appreciate the depth of thinking & care that went into this. There's a lot here, I will try to break it down a bit. These are the two core things happening: > `redact-thinking-2026-02-12` This beta header hides thinking from th…

Textbook example of how to respond to your customers, kudos.

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#548
post #282

Earlier quoted context omitted.

I guess one of the things I don't understand: how you expect a stochastic model, sold as a proprietary SaaS, with a proprietary (though briefly leaked) client, is supposed to be predictable in its behavior. It seems like people are expecting LLM based coding to work in a predictable and controllable way. And, well, no, that's not how it works, and especially so when you're using a proprietary SaaS model where you can…

The problem is degradation. It was working much better before. There are many people (some example of a well know person[0]), including my circle of friends and me who were working on projects around the Opus 4.6 rollout time and suddenly our workflows started to degrade like crazy. If I did not have many quality gates between an LLM session and production I would have faced certain data loss and production outages j…

Curious as to how many people are using 4.6, perhaps you’re on a subscription? I use the api and 4.6 (also goes for Sonnet) is unusable since launch because it eats through tokens like it’s actually made that way (to make more money/hit limits faster). I guess it makes sense from a financial perspective but once 4.5 goes away I will have to find another provider if they continue like this :/

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#549

Earlier quoted context omitted.

That's pretty much been my day - today was genuinely bad, and I've been putting up with a lot of this lately. Now on Qwen3.5-27b, and it may not be quite as sharp as Opus was two months ago, but we're getting work done again.

Literally two weeks ago it was outputting excellent results while working with me on my programming language. I reviewed every line and tried to understand everything it did. It was good. I slowly started trusting it. Now I don't want to let it touch my project again. It's extremely depressing because this is my hobby and I was having such a blast coding with Claude. I even started trying to use it to pivot to profes…

I can see how that works: this is like building a dependency, a habit if you wish. I think the tighter you couple your workflow to these tools the more dependent you will become and the greater the let-down if and when they fail. And they will always fail, it just depends on how long you work with them and how complex the stuff is you are doing, sooner or later you will run into the limitations of the tooling.

One way out of this is to always keep yourself in the loop. Never let the work product of the AI outpace your level of understanding because the moment you let that happen you're like one of those cartoon characters walking on air while gravity hasn't reasserted itself just yet.

Re: Issue: Claude Code is unusable for complex engineering tasks with Feb updates

#550
post #94

To me one of the big downsides of LLM's seems to be that you are lashing yourself to a rocket that is under someone else's control. If it goes places you don't want, you can't do much about it.

That's true for traffic on Facebook, Apple App store guidelines or Google terminating your account as well. What's new is the speed of change and that it literally affects all users at once. They could have released Opus 4.6.2 (or whatever) and called it a day. But instead they removed the old way.

Becoming dependent on those platforms was bad too, but this feels like another level. Making your entire engineering team dependent on a shady company with an apocalyptic fantasy as their business plan just seems insane.
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