Where does the bug appear (feature/product)? Cursor CLI Describe the Bug Unable to use Opus 4.6 fast mode in CLI Steps to Reproduce Launch CLI with agent Use /model selector to switch model Multiple options available but fast mode not included Expected Behavior Expected: Opus 4.6 fast mode to be available Screenshots / Screen Recordings [Screenshot 2026-04-23 at 14.32.38.png] Operating System MacOS Version Information About Cursor CLI CLI Version 2026.04.17-787b533 Model Composer 2 Fast Subscription Tier Team OS darwin (arm64) Terminal zed Shell zsh User Email rohitpaulk@gmail.com Does this stop you from using Cursor Sometimes - I can sometimes use Cursor

@rohitpaulk You should have access now! Can you check?

Yep, can confirm I see it in the CLI now! I still don’t see this when using ACP via Zed but I’ll open another issue with a minimal repro for that. Thanks for the quick fix Colin!

Unable to use opus 4.6 fast mode in CLI

Support Bug Reports

rohitpaulk (Paul) April 24, 2026, 2:21pm 10

Created the ACP bug report here: Opus 4.6 fast mode not accessible via ACP

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Unable to use opus 4.6 fast mode in CLI

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