GoKawiilGet faster Opus 4.6 responses in Claude Code by toggling fast mode.
Fast mode is in research preview . The feature, pricing, and availability may change based on feedback.
Fast mode delivers faster Opus 4.6 responses at a higher cost per token. Toggle it on with /fast when you need speed for interactive work like rapid iteration or live debugging, and toggle it off when cost matters more than latency.
Fast mode is not a different model. It uses the same Opus 4.6 with a different API configuration that prioritizes speed over cost efficiency. You get identical quality and capabilities, just faster responses.
What to know:
Use /fast to toggle on fast mode in Claude Code CLI. Also available via /fast in Claude Code VS Code Extension.
to toggle on fast mode in Claude Code CLI. Also available via in Claude Code VS Code Extension. Fast mode for Opus 4.6 pricing starts at $30/150 MTok. Fast mode is available at a 50% discount for all plans until 11:59pm PT on February 16.
Available to all Claude Code users on subscription plans (Pro/Max/Team/Enterprise) and Claude Console.
For Claude Code users on subscription plans (Pro/Max/Team/Enterprise), fast mode is available via extra usage only and not included in the subscription rate limits.
Toggle fast mode
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