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This is a recap of the top 10 posts on Hacker News on Apr 18, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:19) - Claude Design (01:53) - Measuring Claude 4.7's tokenizer costs (03:42) - Show HN: Smol machines – subsecond coldstart, portable virtual machines (04:52) - All 12 moonwalkers had "lunar hay fever" from dust smelling like gunpowder (2018) (06:12) - NASA Force (07:23) - Are the costs of AI agents also rising exponentially? (2025) (08:35) - Spending 3 months coding by hand (09:45) - NIST gives up enriching most CVEs (11:19) - Hyperscalers have already outspent most famous US megaprojects (12:35) - Outro Claude Designhttps://www.anthropic.com/news/claude-design-anthropic-labshttps://news.ycombinator.com/item?id=47806725Measuring Claude 4.7's tokenizer costshttps://www.claudecodecamp.com/p/i-measured-claude-4-7-s-new-tokenizer-here-s-what-it-costs-youhttps://news.ycombinator.com/item?id=47807006Show HN: Smol machines – subsecond coldstart, portable virtual machineshttps://github.com/smol-machines/smolvmhttps://news.ycombinator.com/item?id=47808268All 12 moonwalkers had "lunar hay fever" from dust smelling like gunpowder (2018)https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/The_toxic_side_of_the_Moonhttps://news.ycombinator.com/item?id=47808913NASA Forcehttps://nasaforce.gov/https://news.ycombinator.com/item?id=47807209Are the costs of AI agents also rising exponentially? (2025)https://www.tobyord.com/writing/hourly-costs-for-ai-agentshttps://news.ycombinator.com/item?id=47778922Spending 3 months coding by handhttps://miguelconner.substack.com/p/im-coding-by-handhttps://news.ycombinator.com/item?id=47807583NIST gives up enriching most CVEshttps://risky.biz/risky-bulletin-nist-gives-up-enriching-most-cves/https://news.ycombinator.com/item?id=47806777Hyperscalers have already outspent most famous US megaprojectshttps://twitter.com/finmoorhouse/status/2044933442236776794https://news.ycombinator.com/item?id=47807619 What is Hacker News Highlights? Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.