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DEPRECATION GitHub Copilot models deprecated on October 19, 2026

As of today, October 19, 2026, we have deprecated the following models across most GitHub Copilot experiences…

Source tier 1: +40
Category DEPRECATION: +30
Other adjustment (same-source burst decay, or scored under an earlier weighting): −5
Base score: 65
Velocity (0 corroborating sources): +0
Model mention: not accelerating vs. the prior week, no velocity bonus
Age decay (25d since published): −65
Effective score right now: 0