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ValentineC

16,588 karma · joined February 20, 2011

Feel free to contact me at hello at vc dot sg.
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ValentineC··on Show HN: I spent 2 years designing a mechanical Magic Keyboard
I have an Apple Watch, but kept that feature off because I didn't want the possibility of someone else being able to fiddle with my MacBook when I'm near enough for the watch unlock to trigger.
ValentineC··on Discovery Loop
I wonder if Jeff Dean facts [1] (I hope people remember the reference) will carry over to the new startup.

[1] https://github.com/LRitzdorf/TheJeffDeanFacts

ValentineC··on Helsinki Hacker News Meetup
Anyone interested in a meetup in Singapore?
ValentineC··on Increasing the lifespan of a bulb makes it worse in every other way
Randomly, my Philips Hue E27 bulbs last far longer than any of the China Zigbee clones I've bought, but like all mass produced goods, there are outliers that fail.

The cheap China stuff tend to fail in a few months, while I've only had two Hue bulbs in my collection fail ever, so Philips seems to be doing something right.

ValentineC··on Apple Will 'Watch Everything Burn' When AI Bubble Bursts
> Microsoft too is a cash cow and seemingly hasn't bet the farm on Copilot.

I think a good follow-up question is: which Copilot?

Anyway, Microsoft seems to be leaning hard into the whole "you can't get fired for buying Microsoft" thing that used to be IBM and AWS. Normies all around the world still insist on using Microsoft Windows and Office.

Anecdotally, they supposedly lost a lot of money on GitHub Copilot's inference costs, at least until June. So they'd be far more equipped to survive an AI crash now.

ValentineC··on DeepSeek V4 Flash 0731 Intelligence, Performance and Price Analysis
@dang please update the existing 404 link to https://artificialanalysis.ai/models/deepseek-v4-flash
ValentineC··on The AI Aesthetic
Beige/cream colours and orange accents — wait, isn't that literally the HN design?

(Randomly, I love the Solarized colour schemes, so anything similar is great, vibe-coded or not.)

ValentineC··on Kimi K3-256k
You're right that it's model dependent, even within Claude models.

I've found Opus 5 far better as a subagent with very limited context window use, which could suggest that it might not have good long context performance unlike its predecessors. (I was one of many tearing my hair out trying to work with Opus 5 for the past week.)

ValentineC··on Launch HN: Tokenless (YC S26) – Automatic model switching to save money
Claude's cache breaks with a reasoning effort adjustment:

https://platform.claude.com/docs/en/build-with-claude/effort...

ValentineC··on Ask HN: Is everybody's Claude weekly quota reset time the same?
It's fixed per account, unlike ChatGPT's which starts when you use it.
ValentineC··on Benchmarking Opus 5 on SlopCodeBench
Medium or low supposedly prevents Opus 5 from overthinking:

https://xcancel.com/danshipper/status/2080700057892815114

ValentineC··on Elevated errors on Claude Opus 5
I mentioned this in one of the earlier Opus 5 threads [1], and it's still infuriatingly bad after days.

I've read that Opus 5 has more success if used with Fable as orchestrator, but since I refuse to pay for subscription access to Fable, I'm now trying Opus 4.6 as orchestrator (also since that was the version that got me loving Claude), and Opus 5 low effort as implementor.

[1] https://news.ycombinator.com/item?id=49052980

ValentineC··on What is happening to jobs? Separating AI hype from reality
I'm surprised the layoffs worldwide hasn't produced more entrepreneurs building their own software product.
ValentineC··on The new rules of context engineering for Claude 5 generation models
I haven't been impressed with Opus 5 over the past ~30 hours either.

It's made countless careless mistakes folding in plan amendments after they get reviewed by Sol, and has produced sloppy mockups (e.g. buttons overflowing past cards) despite all the supposed verification claims.

ValentineC··on The new rules of context engineering for Claude 5 generation models
Commit Strip seems to be down, so here's the Wayback Machine version:

https://web.archive.org/web/20260521130338/https://www.commi...

ValentineC··on Claude Opus 5
Ah, thanks for clarifying!
ValentineC··on Claude Opus 5
What I think is more alarming is that Claude's advice for prompting Opus 5 says that Opus will verify its own work [1]:

> Claude Opus 5 verifies its own work without being told to. If your prompt contains explicit verification instructions ("include a final verification step for any non-trivial task," "use a subagent to verify"), remove them: instructions like these cause over-verification on Claude Opus 5, and removing them reduces wasted tokens with no loss in quality.

My own experience over the past ~20 hours hasn't been great either, with Opus producing sloppy mockups (e.g. buttons overflowing past cards) without doing any of the purported verification.

[1] https://platform.claude.com/docs/en/build-with-claude/prompt...

ValentineC··on Claude Opus 5
I wonder if this is one of the few times simonw's pelican was broken on the first try [1]:

https://tools.simonwillison.net/markdown-svg-renderer#url=ht...

My experience with Opus 5 thus far haven't been that great either. It's been making mistake after mistake editing my coding plans that were being reviewed by GPT-6 Sol.

[1] https://simonwillison.net/2026/Jul/24/introducing-claude-opu...

ValentineC··on If coding has been solved, why does software keep getting worse?
Suing them could also result in one getting banned from Amazon for good.

I wonder if there's a way the law could make it so companies can't retaliate against people who seeking redress for problems they caused.

ValentineC··on I Tried Building a Real App with AI. It Took a Year
Have you considered making it into a PWA?

I've always thought of cloning the old Zero fasting app into one, when I have a bit more time to point my Claude at building something else.

ValentineC··on Claude Opus 5
Team is 1.25x the price of personal accounts, but supposedly also gives 1.25x more usage.
ValentineC··on Claude Opus 5
Team Premium has Fable 5 too.
ValentineC··on The Reddit Problem – How a Reddit Alternative Was Banned from RedditAlternatives
I signed up, but wanted to look into the site's history and somehow found this:

https://www.reddit.com/r/RedditAlternatives/comments/1umrhpz...

Still, I do think Reddit definitely needs more alternatives because their moderation system is broken with power-tripping moderators, and the community admins don't want to do anything about it.

All the best!

ValentineC··on Ask HN: Is there a website that tracks excessive writes to SSDs in OS/app betas?
For Macs, treat a renewable AppleCare subscription as part of the cost.
ValentineC··on Terence Tao's ChatGPT conversation about the Jacobian Conjecture counterexample
Ok, that's fair, and I think that AI isn't that useful for people who don't really know what they want to learn or do.

What I had in mind (and found personally useful myself) was being able to ask a chatbot to break something down into simpler and simpler concepts, until my weak fundamentals or lack of formal education could grasp some bit of it.

I'm not sure many humans (or colleagues at a workplace) would have the patience to tolerate the stupid questions I've been asking.

ValentineC··on Terrence Tao's ChatGPT Conversation about the Jacobian Conjecture Counterexample
What are these "top talent" usually talented at, then?

(I'm not talking about OpenAI/Anthropic at this point, but maybe a <10 people startup.)

ValentineC··on Terence Tao's ChatGPT conversation about the Jacobian Conjecture counterexample
One thing I've repeatedly told people is that chatbots are often the most patient teachers we'll ever get (especially when explaining "stupid" questions) — compared to what we've encountered on StackOverflow or Reddit.
ValentineC··on I found a WordPress RCEs with GPT5.6 and $25
I don't know if things have changed since, but my understanding remains that Matt runs WordPress.org using his own servers and money, not the foundation's:

https://news.ycombinator.com/item?id=42689906

The foundation was, at some point in time when the drama was at its peak, mostly a feel-good non-profit initiative.

ValentineC··on Gemini 3.6 Flash, 3.5 Flash-Lite, and 3.5 Flash Cyber
Why do you think it's the best plan available?
ValentineC··on Exploit brokers pay $500k for WordPress RCEs. I found one with GPT5.6 and $25
> And since the WordPress foundation controls the extension marketplace, they can reliably determine which parts of the API surface are in use, or even invest a chunk of money every month to send AI-written patches to plugin maintainers to ease the transition.

What WordPress foundation?

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