🛠️ Developer Tools

Rubber Duck in GitHub Copilot CLI: When AI Needs a Rival to Shine

Imagine your AI coding buddy second-guessing itself with a rival model's sharp eye. GitHub Copilot CLI's Rubber Duck does just that, slashing errors on brutal, multi-file bugs.

GitHub Copilot CLI terminal showing Rubber Duck critique on a code plan

⚡ Key Takeaways

  • Rubber Duck pairs rival AI models for critiques, closing 75% of performance gaps on tough coding tasks. 𝕏
  • Best for multi-file bugs and long runs—boosts Sonnet near Opus levels without the cost. 𝕏
  • Experimental now in Copilot CLI: /experimental + Claude picker unlocks it for real-world gains. 𝕏
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Originally reported by GitHub Blog

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