Maintain Long-Session Context with Instant Compression
Use /compress-fast to shrink your session history without losing critical project context.
Prevent 'context window' overflow by using the /compress-fast command. This optimizes your existing conversation history, keeping essential project details while reducing the token load.
The Scenario
You have been working on a single feature for hours and the AI is starting to get slow or 'forgetful' due to the massive conversation history.
Before & after
You manually delete old chat turns or start a brand new session to avoid 'token limit' errors, losing valuable context in the 5–10 minutes it takes to re-explain the project.
Run the /compress-fast command to instantly condense your session history. The AI retains the core context while freeing up space in 5–10 seconds.
The Prompt
/compress-fast
The v0.18.3 update introduced /compress-fast to prevent context loss during long coding sessions without typical performance lag.
Source
Qwen Code Blog: AI Coding Updates and Guides | Qwen Code Docs"/compress-fast instant compression... solves the critical issue of losing context during long tasks."