This is a recap of the top 10 posts on Hacker News on Jan 22, 2026.

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

• (00:00) - Intro

Show HN: ChartGPU – WebGPU-powered charting library (1M points at 60fps)
https://github.com/ChartGPU/ChartGPU
https://news.ycombinator.com/item?id=46706528

Claude's new constitution
https://www.anthropic.com/news/claude-new-constitution
https://news.ycombinator.com/item?id=46707572

Skip is now free and open source
https://skip.dev/blog/skip-is-free/
https://news.ycombinator.com/item?id=46706906

Waiting for dawn in search: Search index, Google rulings and impact on Kagi
https://blog.kagi.com/waiting-dawn-search
https://news.ycombinator.com/item?id=46708678

Show HN: Sweep, Open-weights 1.5B model for next-edit autocomplete
https://huggingface.co/sweepai/sweep-next-edit-1.5B
https://news.ycombinator.com/item?id=46713106

Nested code fences in Markdown
https://susam.net/nested-code-fences.html
https://news.ycombinator.com/item?id=46705201

Can you slim macOS down?
https://eclecticlight.co/2026/01/21/can-you-slim-macos-down/
https://news.ycombinator.com/item?id=46702411

Your brain on ChatGPT: Accumulation of cognitive debt when using an AI assistant
https://www.media.mit.edu/publications/your-brain-on-chatgpt/
https://news.ycombinator.com/item?id=46712678

JPEG XL Test Page
https://tildeweb.nl/~michiel/jxl/
https://news.ycombinator.com/item?id=46708032

Significant US farm losses persist, despite federal assistance
https://www.fb.org/market-intel/significant-farm-losses-persist-despite-federal-assistance
https://news.ycombinator.com/item?id=46713929