[FEATURE]

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

I'd like to add fast mode (that we use in Claude Code) to Claude Cowork.

Proposed Solution

Allow co-work users to use the forward slash (fast command) to activate the faster Opus model.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

Performance and speed

Use Case Example

_No response_

Additional Context

_No response_