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LawrenceJones
LawrenceJones
April 8, 2026

Microsoft GitHub launched an experimental Rubber Duck feature for Copilot CLI, adding a cross-model AI review mechanism. Using Claude models with GPT-5.4 for a second opinion, it reduced coding errors and boosted AI performance by nearly 75% in tests. The tool offers active, passive, and on-demand review modes to improve code accuracy.

Microsoft GitHub launched an experimental Rubber Duck feature for Copilot CLI, adding a cross-model AI review mechanism. Using Claude models with GPT-5.4 for a second opinion, it reduced coding errors and boosted AI performance by nearly 75% in tests. The tool offers active, passive, and on-demand review modes to improve code accuracy.
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