Hacker News: lehmacdj

New comment by lehmacdj in "ChatGPT Images 2.0"

lehmacdj — Tue, 21 Apr 2026 20:00:33 +0000

So do you think there will be a better image model in a year?

New comment by lehmacdj in "An interactive intro to quadtrees"

lehmacdj — Fri, 27 Feb 2026 15:44:28 +0000

Consider also looking into R-trees [1], which are like a balanced quadtree and is commonly used for indexing more complex spacial data (i.e. polygons/areas).

[1]: https://en.wikipedia.org/wiki/R-tree

New comment by lehmacdj in "Generative AI use and depressive symptoms among US adults"

lehmacdj — Fri, 27 Feb 2026 15:37:19 +0000

I'm pretty ambivalent about generative AI's effect on my happiness/motivation.

Often talking to Claude/using AI agents to build software is really enjoyable/motivating, and it also makes it easier to get the satisfaction from completing projects.

But it also tends to make me think about how quickly the technology is developing. This makes me anxious about x-risks from AI, which makes it harder to get work done.

New comment by lehmacdj in "AI Added 'Basically Zero' to US Economic Growth Last Year, Goldman Sachs Says"

lehmacdj — Tue, 24 Feb 2026 02:45:51 +0000

They have good margins on inference at API costs, i.e. $5/$25 per mtok input/output. They are almost certainly making losses on subscriptions, at least if people max out rate limits.

In the past 30 days I have burned $78.19 in API token costs with my $20/month Claude Pro subscription. In January I burnt over $300 in API token costs.