Karl Perron: Posts https://karlperron.com/ Karl Perron (@karlperron): command-line tools for people who build with coding agents, plus startup contracts, games and music. en EPYC Zen 6 is here, and it is built for agent sandboxeshttps://karlperron.com/news/2026-11-10-epyc-zen-6.htmlhttps://karlperron.com/news/2026-11-10-epyc-zen-6.htmlTue, 10 Nov 2026 21:20:00 GMTAMD's 6th Gen EPYC tops out at 256 cores per socket and 1,024 threads in a two-socket box, and AMD is aiming it at agent workloads. I built labelswap so I stop paying a frontier model to pick a labelhttps://karlperron.com/news/2026-11-10-labelswap.htmlhttps://karlperron.com/news/2026-11-10-labelswap.htmlTue, 10 Nov 2026 16:17:00 GMTlabelswap learns from labels an LLM already assigned, answers the confident cases locally, and sends only the unsure ones back. Unreal Engine 5.9 Preview 1 is outhttps://karlperron.com/news/2026-11-09-unreal-5-9-preview.htmlhttps://karlperron.com/news/2026-11-09-unreal-5-9-preview.htmlTue, 10 Nov 2026 02:03:57 GMTUnreal MCP now starts with the editor, but a bug leaves new projects with no agent tools. Here is the fix. Muse Ember is out, Meta's small model for agent workhttps://karlperron.com/news/2026-11-09-muse-ember.htmlhttps://karlperron.com/news/2026-11-09-muse-ember.htmlTue, 10 Nov 2026 01:25:00 GMTMeta's smallest Muse model is on the API at $0.10 / $0.50 per million tokens, made for the small steps agents repeat. Fable 5.2 is out, with free limit resetshttps://karlperron.com/news/2026-11-09-fable-5-2.htmlhttps://karlperron.com/news/2026-11-09-fable-5-2.htmlTue, 10 Nov 2026 00:34:15 GMTClaude Fable 5.2 shipped today. Paid plans get one to three free Fable limit resets. First lighthttps://karlperron.com/news/2026-11-09-first-light.htmlhttps://karlperron.com/news/2026-11-09-first-light.htmlMon, 09 Nov 2026 00:00:00 GMTWhat is on this site, and how it is made.