Models & Labs
Claude Opus 4.8 Fast Mode Preview on GitHub Copilot
GitHub Changeloghigh confidence
Why it matters
- →Faster output speeds enhance developer productivity in interactive coding environments.
- →The reduced cost of fast mode makes advanced AI tools more accessible.
- →Gradual rollout across platforms ensures broad accessibility for various user needs.
GitHub Copilot has introduced a preview of Claude Opus 4.8 in fast mode, offering significantly faster output speeds while maintaining the model's intelligence. This new mode is designed for interactive coding and agentic workflows, where quick response times are essential. Although it is more cost-effective than previous fast modes, it is still more expensive than the standard Claude Opus 4.8. The feature is available to Copilot Pro+, Max, Business, and Enterprise users across multiple platforms, with a gradual rollout planned.
Read originalThe story around this
Earlier coverage that leads up to this article, and what followed. Lines connect each piece to the closest one after it, converging here.
How we got here
- 1Claude Code v2.1.142 Release
Claude Code Releases · May 15, 2026 · Related
- 2Anthropic Releases Claude Opus 4.8
Anthropic · May 28, 2026 · Related
- 3Claude Opus 4.8 now in GitHub Copilot
GitHub Changelog · May 28, 2026 · Same story
- 4Claude Opus 4.8 Review Highlights New Features
Skill Leap AI · May 28, 2026 · Related
- 5Claude Code v2.1.154 Release
Claude Code Releases · May 29, 2026 · Related
- 6Claude Opus 4.8 Model Released
Duncan Rogoff · May 29, 2026 · Related
- 7Claude Opus 4.8 Launches with Dynamic Workflows
Lev Selector · May 29, 2026 · Related
- 8Claude Opus 4.8 Enables Rapid AI OS Creation
Duncan Rogoff · May 31, 2026 · Related
What happened next
- 9Claude Opus 5.5 arrives in GitHub Copilot
GitHub Changelog · September 22, 2026 · Same story
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