This is a recap of the top 10 posts on Hacker News on Sep 30, 2025.

Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

• (00:00) - Intro

Claude Sonnet 4.5
https://www.anthropic.com/news/claude-sonnet-4-5
https://news.ycombinator.com/item?id=45415962

Claude Code 2.0
https://www.npmjs.com/package/@anthropic-ai/claude-code
https://news.ycombinator.com/item?id=45416228

Loadmo.re: design inspiration for unconventional web
https://loadmo.re
https://news.ycombinator.com/item?id=45415207

Instant Checkout and the Agentic Commerce Protocol
https://openai.com/index/buy-it-in-chatgpt/
https://news.ycombinator.com/item?id=45416080

Ask HN: What are you working on? (September 2025)
https://news.ycombinator.com/item?id=45418675

Voronoi map generation in Civilization VII
https://civilization.2k.com/civ-vii/from-the-devs/map-generation/
https://news.ycombinator.com/item?id=45382300

Vertical Solar Panels Are Out Standing
https://hackaday.com/2025/09/25/vertical-solar-panels-are-out-standing/
https://news.ycombinator.com/item?id=45414215

iRobot Founder: Don't Believe the AI and Robotics Hype
https://crazystupidtech.com/2025/09/29/irobot-founder-dont-believe-the-ai-robotics-hype/
https://news.ycombinator.com/item?id=45418261

How to create an OS from scratch
https://github.com/cfenollosa/os-tutorial
https://news.ycombinator.com/item?id=45420173

Safe zero-copy operations in C#
https://ssg.dev/safe-zero-copy-operations-in-c/
https://news.ycombinator.com/item?id=45420001