Where does the bug appear (feature/product)?
Cursor IDE
Describe the Bug
I’ve been trying to use this model for different tasks, but it always gets stuck around the 280k context mark.
Even though it’s supposed to support up to 800k, once it hits around 280k (36%) it stops working and just shows the three pulsating dots and never continues, this happens across multiple chats. The same thing happens whether I have Max Mode turned on or disabled.
Is anyone else experiencing this issue?
Steps to Reproduce
Open a new chat with the model that supports up to 800k context.
Paste or generate content that builds up to 280k+ tokens.
Ask the model to continue processing/responding.
Observe that once it reaches 280k+, it stalls (pulsating dots), and no response is returned.
Expected Behavior
The model should continue working normally up to the advertised 800k context limit.
Operating System
Windows 10/11
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.7.11 (user setup)
VSCode Version: 1.99.3
Commit: 867f14c797c14c23a187097ea179bc97d215a7c0
Date: 2025-09-26T16:55:04.318Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100
For AI issues: which model did you use?
Code-supernova-1-million
Does this stop you from using Cursor
No - Cursor works, but with this issue
