Claude Code 用 opusplan 分层：Opus 规划、Sonnet 写码、Jev 路由微决策

delost @thedelost原推发布于 2026.10.13

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THIS IS PURE F*CKING TREASURE Anthropic just shared one of the best tricks for Claude Code. The idea: let Opus 5.5 do the thinking and Sonnet 5.5 do the typing, and switch between them automatically. Better plans and cheaper builds, because you stop paying Opus to type out every line it already planned. You just start Claude Code like this: claude --model opusplan here's how it splits: → in plan mode, Opus 5.5 reads the repo and designs the change → the moment you approve the plan, Sonnet 5.5 takes over and writes the code → Haiku 5.5 subagents search files, run tests and pull docs in parallel → Opus never burns context typing boilerplate flip back into plan mode (shift+tab) at three moments: → a new feature → a design decision with tradeoffs → a bug the first fix didn't kill Opus plans. Sonnet builds. Haiku searches. JEV engineering is the same move one layer down: the forks that need no thinker (which file, which tool, retry or stop) go to JEV in milliseconds, and the big models only see the ones that split the full tree > Opus 5.5 plans in plan mode on high effort > Sonnet 5.5 executes the approved plan > search maps the repo on Haiku 5.5 > tests runs the suite on Haiku 5.5 > docs pulls the API reference on Haiku 5.5 > JEV routes micro-forks in milliseconds paste the tree and this prompt into Claude Code ↓ "Reconfigure my Claude Code setup around this tree: 1. Set my default model to opusplan in settings, with effort on high. 2. Create three Haiku 5.5 subagents with model: haiku in their frontmatter: search (maps the repo, read-only), tests (runs the suite and reports failures), docs (pulls the API reference, read-only). 3. Add one rule to CLAUDE.md: enter plan mode before every new feature, every design tradeoff, and every bug that survived the first fix. 4. Route fast deterministic forks (tool choice, path selection, retries) through JEV. Show me every change as a diff first. No edits until I say go." ↳ http://code.claude.com/docs/en/model-config save it, it'll come in handy.

这条是引用着另一条写的：x.com/hanakoxbt/status/2101709924828934222