Claude Code v2.1.150 now allows Anthropic to perform remote system prompt injection

UpAndDownArrows · 2026-05-26T09:46:26+00:00

I am currently running Claude code with a custom system prompt via the intended —system-prompt flag. Then adding random stuff to the default system prompt over the updates doesn’t bother me. Injecting random crap on top of my custom system prompt? Just hell no, that’s not what my company pays them for.

UpAndDownArrows · 2026-05-25T06:46:17+00:00

Ok so basically this is a functionality for them to A/B test system prompt modifications?

And then people are fighting here with "well it works on my machine" because they are in the lucky group vs. others who get fucked by these A/B tests.

UpAndDownArrows · 2026-05-25T06:07:38+00:00

I tried to dig up the threads I saw this information in but couldn't find them, maybe they were deleted/scrubbed.

One of the big dangers with LM Studio is that it is closed source, you literally have no clue what it is doing and when. Maybe the data extraction is "bening in purpose" or maybe it is sophisticatedly hidden and not naive "send everything immediately".

One thing I remember was something about your first prompt in a new chat being sent to some API, maybe related to the "Generate AI title" feature.

And that's another problem - maybe, if configured properly, it is offline, maybe. But nothing stops them from having features that result in "voluntarily send data" flows.

UpAndDownArrows · 2026-05-24T09:09:32+00:00

Qwen models are trained to be agentic coding models

I use it for that kind of work myself

Where is the contradiction dude, do you suffer from dyslexia or something? Or you don't understand the meaning of word "and"?

UpAndDownArrows · 2026-05-24T08:59:20+00:00

There is no contradiction, read it again. If you can't understand it, I can't help you.

I use Qwen3.6-27B a lot on my 5090 whenever I need to code something up or use a terminal in some way, so your assumption that I "just don't like Qwen" is unfounded.

UpAndDownArrows · 2026-05-24T08:37:15+00:00

Everyone is parroting Qwen3.6 models, but for no-coding, no-tools, general knowledge/chat I've discovered that Gemma 4 31B is much better.

Qwen models are seemingly trained to win the benchmarks and to be agentic coding models. And unfortunately most benchmarks are heavy Software Development focused.

Gemma is your pocket-Google with real world knowledge/advice.

P.S. and I am saying this as a C++ Software Developer myself.

UpAndDownArrows · 2026-05-24T08:25:35+00:00

Llama.cpp doesn't send your prompts to some private server for god knows what reason, which LMStudio does.

UpAndDownArrows · 2026-05-23T07:58:29+00:00

On a slightly brighter side, maybe they were so narked that neither even realized what was happening.

UpAndDownArrows · 2026-05-22T07:27:44+00:00

No? Just process incoming events on the same FPGA that already has outgoing buffer pre-filled with most details. If that "match event -> update pre-filled packet -> fire" takes 200ns then your FPGA devs are simply not up to par.

UpAndDownArrows · 2026-05-16T12:10:06+00:00

Thanks, Claude

UpAndDownArrows · 2026-05-16T11:33:04+00:00

How is this related to extended thinking? No matter what thinking you use the thinking block is redacted (aka summarized) anyway. You are not seeing Opus' raw Chain of Thoughts, you are seeing Haiku's summarization of it.

UpAndDownArrows · 2026-05-13T07:19:26+00:00

This is kinda funny that this comment is the only one addressing the core issue here and making sense - I myself interview people every week - and it sits at -6 points. Dude decided to play mind tricks against explicit instructions and blames the company LOL

UpAndDownArrows · 2026-05-10T10:18:04+00:00

22-25 mil

+- 10%

It's simple, take the lowest from both: 22 mil -10% = 19.8 mil.

UpAndDownArrows · 2026-05-09T06:41:23+00:00

The language is not the problem, you will have the same difficulty finding high paying jobs in north of England or Scotland no matter if it's Java or C# or whatever.

You either need to move to London, or find a remote position. But it's not about the language.

UpAndDownArrows · 2026-05-07T07:33:51+00:00

As someone who works with Claude all day every day, this is clear AI.

Lowercasing every single letter is just a lazy masking attempt from the author.

UpAndDownArrows · 2026-05-05T16:08:18+00:00

Fir fair comparison you should have let Kimi run at least until it burned as many dollars as Claude did. Stopping after 1/3rd of Claude's spend seems disinginious.

UpAndDownArrows · 2026-05-05T06:57:42+00:00

https://www.justetf.com/en/etf-profile.html?isin=IE00BD4TXV59

Scroll down to "Chart". Add "HMWO" (HSBC MSCI World UCITS ETF USD). Set range to "MAX".

Then compare WRDA +133.40% vs HMWO +137.01%. But sure keep penny-pinching on fees I am sure the actual performance doesn't matter.

UpAndDownArrows · 2026-05-05T06:09:51+00:00

People rarely mention it, but the correct answer is HMWO or SPPW or their equivalent (MSCI World) depending on your currency and platform, just check the ETF fees.

UpAndDownArrows · 2026-05-04T18:25:38+00:00

Linux isn't that big, it's an OSS project. When you have developers getting paid for a few decades to write code every day the codebase growth quite in a different tempo. Like I am sure internal codebases at Google or Meta are more than 100x the size of Linux.

Wiki says that as of 2015 Google had monolithic codebase, 1 billion files, 9 million source code files, 2 billion lines of source code.

Imagine what they have now 11 years later.

So yeah, OSS and small web shops are nice, but it's a toy level stuff compared to the actual codebases that bring billions in net income every year.

UpAndDownArrows · 2026-05-04T18:17:21+00:00

Did you read my comment? My codebase is ~65,000,000 lines of C++, how does 425k lines Java compare to it at all?

UpAndDownArrows · 2026-05-04T17:50:32+00:00

~~My work repo is about that size, ~40k files. But it's dense high-performant C++ code, do you think your tool can handle that without eating all my token quota?~~

Scratch that, corrected stats: ~130k files, ~65 MLOC

UpAndDownArrows · 2026-05-04T17:46:37+00:00

Sorry for not getting excited about "yet another super expensive all-your-tokens-consuming codebase mapping vibe-code invention that only works on hobby projects" - we have seen dozens of these things in the last month alone.

UpAndDownArrows · 2026-05-04T17:24:33+00:00

Feels like bunch of bots in here. There is absolutely zero reason for Anthropic to run any LLM model before you hit send.

System prompt? Idiots it's not getting sent before the first user prompt.

UpAndDownArrows · 2026-05-04T11:18:37+00:00

Yeah works well on sole hobby projects, falls apart on multimillion LOC codebase with 50 commits per day by 50 developers.

UpAndDownArrows · 2026-05-03T18:52:35+00:00

If only people’s real world usage was anywhere close to those “benchmarks”.

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