Karpathy built his own YouTube in two hours
Tired of what YouTube showed him, Karpathy had Claude Opus 5.5 pull every Hacker News comment ever posted, keep the 40,000 that recommend a video, and wrap them in a YouTube-style UI with no accounts and no algorithm: 6,454 videos, 150 topics, nineteen years, at hackertube.org. Karpathy
This week in AI
Mistral Large 4 is open. A trillion parameters under a modified MIT license: the most serious open frontier-class release yet. TechCrunch
Kimi K3.1 Pro weights due by Wednesday. 1M-token context, 65.7% on Terminal-Bench 4.0, a hair behind Opus 5.5. Moonshot
Patch Monday: CVE-2026-98432. A 9.8 use-after-free in the kernel's TCP handshake that Claude turned into a remote root exploit. Ubuntu and RHEL: still unpatched. The Hacker News
Build this weekend
Give the house a local brain. Home Assistant 2026.11 lands Wednesday with HACS folded into core as the Marketplace. Point its OpenAI-compatible conversation integration at llama.cpp serving gpt-oss-120b in MXFP4 (63 GB, 34 to 56 tok/s on Strix Halo), then expose scripts as tools. Home Assistant
Rabbit hole
Leo de Moura on proofs becoming free. Lean's creator tells Ben Lorica that humans took ten years to write Mathlib's 2.5 million lines; AI now writes 50-million-line ones. The Data Exchange
Off the clock
Casio's 1980s. Casio's own page for the decade it put a calculator, a touchscreen and a thermometer on your wrist. Casio
An NES CPU inside a language model. Drew Breunig compiled a 6502 and a cartridge ROM into a stock Qwen3.5 checkpoint, no training involved. Mario at 1/200th speed. GitHub
Good news
An island turned off its lights for the birds. Corvo, in the Azores, went dark for three weeks so 6,000 pairs of shearwaters can fledge by starlight. Positive News
Spark
Two hours is the new unit of effort. Pick the thing you have been tolerating and spend one on it.