Context decrease

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I choosed the opus 4.7 with 1M context, but the actual context is only 300k. same situation on opus 4.6 and other models.

Steps to Reproduce

open any session

Expected Behavior

the context should be 1M

Operating System

Windows 10/11

Version Information

Version: 3.3.30 (system setup)
VSCode Version: 1.105.1
Commit: 3dc559280adc5f931ade8e25c7b85393842acf30
Date: 2026-05-09T18:28:42.332Z
Layout: editor
Build Type: Stable
Release Track: Default
Electron: 39.8.1
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26200

For AI issues: which model did you use?

OPUS 4.7

Does this stop you from using Cursor

Yes - Cursor is unusable

6

@Yao_Zhang Hey thanks for reporting this, and sorry for the disruption.

This is a known regression affecting Opus 4.6, 4.7, and a few other 1M variants — chats are getting capped/summarized around 200–300K instead of 1M. A fix is rolling out now, so things should be back to normal shortly. Restarting Cursor once it lands will pick it up. I’ll respond here once we’ve confirmed the fix.

11

Hi @Yao_Zhang This should be fully resolved now. Let me know if you still see the issue.