Study mode(openai.com)
1048 points by meetpateltech | 753 comments
OpenAI product announcement introducing study mode in ChatGPT, which offers step-by-step guidance for learning instead of quick answers.
Hacker News on
Stories posted this day, by points. Rank history starts with the October 2026 rebuild.
Show HN: Draw a fish and watch it swim with the others(drawafish.com)
878 points by hallak | 224 comments
Drawafish.com is a web toy where users draw a right-facing fish on a canvas and release it to swim in a shared tank with others' drawings.
M8.7 earthquake in Western Pacific, tsunami warning issued(earthquake.usgs.gov)
839 points by jandrewrogers | 227 comments
USGS event page for the M8.8 earthquake 119 km ESE of Petropavlovsk-Kamchatsky, Russia on 2025-07-29, with maps and impact information.
My 2.5 year old laptop can write Space Invaders in JavaScript now (GLM-4.5 Air)(simonwillison.net)
544 points by simonw | 362 comments
Simon Willison blog post showing the GLM-4.5 Air model, 3-bit quantized for MLX, generating a working Space Invaders game in JavaScript on a 64GB laptop.
iPhone 16 cameras vs. traditional digital cameras(candid9.com)
459 points by sergiotapia | 438 comments
A Candid9 blog post comparing photos from iPhone 16 cameras with those from traditional digital cameras, using side-by-side example shots.
Irrelevant facts about cats added to math problems increase LLM errors by 300%(science.org)
444 points by sxv | 228 comments
Science magazine's ScienceAdviser newsletter covering how irrelevant cat facts confuse LLMs on math problems, plus other science news items.
RIP Shunsaku Tamiya, the man who made plastic model kits a global obsession(japanesenostalgiccar.com)
392 points by fidotron | 82 comments
Japanese Nostalgic Car obituary for Shunsaku Tamiya, former Tamiya president who turned the company into a global maker of plastic model kits and RC cars.
ACM Transitions to Full Open Access(acm.org)
365 points by pcvarmint | 47 comments
ACM page announcing its transition to a fully open access publishing model for all its research content by the end of 2025.
Wikimedia Foundation Challenges UK Online Safety Act Regulations(wikimediafoundation.org)
319 points by Nurw | 155 comments
Wikimedia Foundation news post announcing its legal challenge to UK Online Safety Act regulations, dated 17 July 2025.
URL-Driven State in HTMX(lorenstew.art)
274 points by lorenstewart | 148 comments
Maru OS – Use your phone as your PC(maruos.com)
229 points by fsflover | 151 comments
Fintech dystopia(fintechdystopia.com)
219 points by LasEspuelas | 199 comments
Elements of System Design(github.com)
138 points by qianli_cs | 36 comments
Mountain of Ink(mountainofink.com)
105 points by neilfrndes | 73 comments
Zig Profiling on Apple Silicon(blog.bugsiki.dev)
100 points by signa11 | 22 comments
Yearly Organiser(neatnik.net)
98 points by anewhnaccount2 | 23 comments
Playing with Open Source LLMs(alicegg.tech)
49 points by zer0tonin | 35 comments