github: Claude Opus 4.8 (fast mode) is now in preview for GitHub Copilot

· Sujith Quintelier · June 30, 2026, 12:06 a.m.
github GitHub Copilot Claude Opus AI Development
Summary
GitHub is previewing Claude Opus 4.8 for GitHub Copilot, featuring a fast mode that boosts output token speed while maintaining model intelligence.
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