Slow, cited writing on machine intelligence — signal over hype. Essays, a Field Guide, and a weekly dispatch from the editors of Defragging.ai.https://defragging.ai/en-ushttps://www.rssboard.org/rss-specificationAstro© 2026 Defragging.ai — All essays are cited.Tue, 26 May 2026 00:00:00 GMThttps://defragging.ai/blog/the-real-cost-of-a-token/https://defragging.ai/blog/the-real-cost-of-a-token/What API pricing is actually paying for — hardware, electricity, and a falling curve — and why this changes which apps make sense.Tue, 26 May 2026 00:00:00 GMTDefragging Editorialeconomics-and-deploymenteditors@defragging.ai (Defragging Editorial)https://defragging.ai/blog/evals-vs-vibes/https://defragging.ai/blog/evals-vs-vibes/Why every serious AI project ends up writing its own evaluation set, and what a good one looks like.Sun, 24 May 2026 00:00:00 GMTDefragging Editorialevaluationeditors@defragging.ai (Defragging Editorial)https://defragging.ai/blog/why-benchmarks-lie/https://defragging.ai/blog/why-benchmarks-lie/Contamination, saturation, and the incentive to teach to the test — a field guide to reading model launch charts skeptically.Fri, 22 May 2026 00:00:00 GMTDefragging Editorialevaluationeditors@defragging.ai (Defragging Editorial)https://defragging.ai/blog/attention-in-plain-english/https://defragging.ai/blog/attention-in-plain-english/The one trick that makes transformers work, explained without matrices — and what changes once you understand it.Wed, 20 May 2026 00:00:00 GMTDefragging Editorialfoundationseditors@defragging.ai (Defragging Editorial)https://defragging.ai/blog/what-is-a-token/https://defragging.ai/blog/what-is-a-token/Models don't see words. They see tokens — chunks of bytes carved up by a learned vocabulary. Here is what that means in practice.Mon, 18 May 2026 00:00:00 GMTDefragging Editorialfoundationseditors@defragging.ai (Defragging Editorial)https://defragging.ai/blog/cost-defragmentation/https://defragging.ai/blog/cost-defragmentation/AI bills are not high because tokens are expensive. They are high because the memory is sitting half-empty and the context is not being attended to.Sun, 17 May 2026 00:00:00 GMTDefragging Editorialeconomics-and-deploymenteditors@defragging.ai (Defragging Editorial)