Three days ago, Anthropic released Claude Fable 5 — their first publicly available Mythos-class model, sitting above the entire Opus tier. It benchmarks over 10% better than Opus 4.8 on some coding tasks, ships with a 1M context window by default, and is built specifically for multi-agent workflows. Planning, sub-agent delegation, long-running autonomous execution.
It's available in VS Code right now via Claude Code and a growing list of extensions.
And that's what's been on my mind since Tuesday.
What AI Agents Actually Mean for Your Editor
For years, AI in your editor was passive. Copilot finishes a line, you tab or you don't. A chatbot drafts a function, you paste it in or you don't. You were always the one making the call.
