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Whatever? I too prefer two windows side by side and I don't see this feature useful, but if others do, that's great.

I didn't vote but I'll bite the bullet.

1. Do not relay LLM output. If someone wanted, they would use it, ChatGPT is free. Post your own, human, meaty thoughts.

2. The blog post explains all these technologies, one just need to read it further than the title. It might be a big ask here on HN, I know, but still.


Reproducing is absolutely not a copyright violation. Otherwise emulators would have no legal option to exist.

That is a question about which copyrights are enforced. Different question.

An emulator is not a reproduction of the thing it emulates.

I've been using 5.3-Codex. I cannot proof because it's subjective, but I have better results (you could say more reasonable) with it than 4.6 Opus.

GPT-5.4 one-shot a cross-language issue (a C++ repo + some amount of Lua), Opus kept hallutinating. This was debugging, not codegen.


I wasn't going to click the website - I agree with the first comment that first-party "researches" is just marketing which I have zero interest in.

Then your comment made me curious, and I clicked. What the actual fuck.


Claiming they will replace software engineers in 6-12 months, every 6 months [4]

[4] https://finance.yahoo.com/news/anthropic-ceo-predicts-ai-mod...


No. You can be an expert in one field, and have no idea what you're doing in another.

> You can be an expert in one field, and have no idea what you're doing in another.

And for whatever reason a lot of people in startup/tech seem to have a huge Dunning-Kruger effect blind spot where they believe knowing a lot about one thing makes them an expert in everything.

This used to just be funny, but when it started to intersect with politics it began to actively contribute to destroying society. It isn't funny anymore.

(I don't think Karpathy's job data here is destroying society, this is a more generalized observation).


It is wild that ya'll are hating on a website that visualizes data. That's like table stakes standard common practice for software engineers for decades.

This is the equivalence of telling a Designer that can't create infographics on anything but principled design subjects -- or else they're out of line. Any research or data they might use isn't relevant because they're not exerts? lol?


> a website that visualizes data

It is a website that visualizes the output of an LLM prompt and passes it off as data. Big difference between the two.


The problem is that the data it's visualizing is fake. The color grading is just an AI guessing how susceptible jobs are.

THIS: > And for whatever reason a lot of people in startup/tech seem to have a huge Dunning-Kruger effect blind spot where they believe knowing a lot about one thing makes them an expert in everything. <

Its especially(!) very common for people who made an exit and are now "wealthy" - sure they can afford to have an oppinion on everything, but very often they are just talking bullshit, thinking: "hey, I made it in field X, so why do not try field Y".

Esp the "MBA crowd" is famous for this: For whatever reason they think they are more intelligent than ana engineer who filed a patent, e.g. (while most of the MBA bobos would fail just in acquiring all documents required for this)

Other example: If you wrote once a book and it got traction, even if you are not a proven expert you will be invited to television shows etc. (and MORE than the people who are real experts with proven track record)


Wise words. Exactly what I would except from a millenium-old elf :P

  our profession is under threat.
It is. But I don't think it's AI that threatens it. It's susceptible to hype people who, unfortunately, have the power over people's jobs. C-level management who don't know anything better than parroting what others in the industry are saying. How is that "all engineers will be replaced in 6 months" going?

Don't forget the threat from incompetent developers who have been working by copy pasting things from stackoverflow without understanding what they are doing since several years.

We've seen something similar in the past decades: outsourcing. And it worked completely differently how it was envisioned a few decades ago, at least in the field of software development. So let's wait what happens. Some kind of backlash has been already started in the past months.

I don't understand and I'm curious, why a dead on arrival open source tool needs a separate domain?

  Domain Name: prompt-caching.ai
  Updated Date: 2026-03-12T20:31:44Z
  Creation Date: 2026-03-12T20:27:35Z
  Registry Expiry Date: 2028-03-12T20:27:35Z

It's more likely the other way around, the .ai domain with a fairly generic and maybe future-proof name needed a quick vibecoded project to not be empty when it launches.

Is it perhaps because this is for claude code but there's other tools that use anthropics api like custom agents? (some i prefer to use than claude code - e.g sketch.dev what is now called shelley at exe.dev) perhaps?

No, because this doesn’t actually “fix” any existing code. It’s only useful for helping an LLM to modify your code to adjust the caching parameters in the right place, but it doesn’t have the correct API for that.

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