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February 27th, 2026

Enable opusplan mode for Claude Code

What is opusplan mode?

Anthropic documentation says:

Special mode that uses opus during plan mode, then switches to sonnet for execution

Here is how to enable it:

  1. Inside Claude Code session run /mode opusplan
  2. In settings write: "model": "opusplan"
Instructions for enabling opusplan mode in Claude Code through settings edit or TUI command, highlighting its planning and execution phases.
Instructions to enable opusplan mode to Claude Code