Harness race: Claude Code mods; Grok Bot goes software-first

2026-10-01 AI

From the AI digest for 2026-10-01

• Claude Code "mods" (~2:58 PM ET X layer): user-authored TypeScript mods changing behavior/UI/features, a community marketplace (anthropics/claude-plugins-community), Claude writing mods on prompt (Addy Osmani post), forked per-turn agents as a mod pattern. Anthropic's extension-layer answer to OpenClaw's plugins/skills — watch the security surface a marketplace becomes.
• Grok Bot build features: hand-off to Cursor, PR management via GitHub/Origin plugins, shared video demos, "major speed improvements," and proactivity that reads connectors (the switched-flight → ping-your-Uber demo). SpaceXAI also made its engineering team's bots public, and the self-demonstration loop keeps running: "SpaceXAI is using Grok Bot to build Grok Bot."
• Model-layer numbers (vendor-adjacent): Siqi Chen's internal cfo.ai eval — 6.1 Sol 3× the efficiency of Opus 5.5 and 2.5× Sonnet 5.5, after Opus 5.5 had been 2× vs gpt-6-sol; sama: 6.1 Sol "our fastest-growing model ever... was a bit slow under load. Should be much better now."

Links: mods thread · Grok Bot · sama

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