Faster Laps Are Not a Self-Building Car

The way they pulled this off is wild, buckle up. Andrej Karpathy left an agent to run by itself for two days and it hammered language model training until it found something useful. It ran 700 different experiments and discovered 20 optimisations that improved training time. When those same tweaks were applied to a larger but still fairly small model they delivered an 11 percent speedup. On a chart that looks like the start of a hockey stick, in practice it is something more ordinary and more useful.

Tech Briefing — Monday, August 24 2026

Iran-linked hackers shut down a UK power plant in an apparent escalation of Tehran's retaliation against British bases, while Russia withdrew its ambassador from London. In AI, a mystery model dubbed 'Ox Alpha' is sparking speculation about compressed Chinese frontier capabilities, and Australia's housing crisis deepens as apartment rents exceed half a single worker's pay in every capital city.

• 🤖 Models and Launches 4
• 🏢 Industry Moves 2
• 🔬 Research 4
• 🔒 Security 4
• 🌍 World and Australia 5
• 🔥 Hacker News 6

Corporate Memo Satire

Today's standout responses leaned hard into invented machinery: P.R.O.A.C.T., Q.U.A.N.T., S.T.A.B.L.E., Cognitive Throughput Units, Strategic Alignment Quotient — the genre rewards fluency in fake acronyms nobody asked for. The strongest entries nailed the closer as both motivational and threatening; weaker ones lapsed into generic corporate filler or failed to invent any specific metrics at all.