Wow, @trevin and @kieranklaassen cooked with CE 3.20. V impressive. TL;DR of Compound Engineering 3.20: the best AI coding workflow is no longer picking one model. It’s using the right model for each job without manually moving context between them. 🧠 Plan in Claude or Fable, implement in Codex, review with Grok or Composer. Your original session stays in charge 🔀 Route any stage to any model or harness: “/ce-plan use fable” or “/lfg implement with codex” 🔮 Say “oracle” and multiple models independently inspect your repo, form opinions, debate disagreements, and recommend the best approach 🥊 Code and document reviews now automatically use a rival provider to hunt for problems the primary model missed 📦 /ce-handoff creates a clean snapshot of the goal, decisions, constraints, dead ends, local state, and the exact command to resume later 👶 /ce-babysit-pr watches CI and review feedback, fixes issues, commits, pushes, and replies until the PR is ready for you to merge 🧹 /ce-sweep pulls feedback from GitHub, Slack, and email into one plan—and only marks something fixed after verifying the code actually merged 🎓 /ce-explain teaches you what your agents changed so you don’t build up a codebase nobody on the team understands 📝 PR descriptions now follow your repo template, explain the full branch, and scale based on reviewer risk—not raw line count 🧭 Brainstorming now recognizes when you don’t understand a domain and maps the key decisions, risks, options, and recommended defaults first 🛠️ New support for Devin CLI, Cline, Grok Build CLI, Claude Desktop, and OpenCode ⚡ All 31 skills are about 12% faster and use 31% fewer shell calls The pattern: stop treating AI coding tools like separate chat windows. Treat them like a coordinated engineering team where different models plan, build, criticize, verify, teach, and finish the job.