Upgraded My Plan — and Everything Broke Instantly. Why?

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1

Hi,

I was previously on the $20/month plan and used Opus 4.6 for a week on a few thousand lines of code (analyse, code, debug). Everything was working extremely well, it was fast, reliable, and didn’t even come close to any usage limits.

However, today, after asking just a few simple questions (not even code-related), I suddenly hit the limit and was prompted to upgrade to the $60/month plan. I upgraded, but since then the service has significantly degraded.

As you can see in the screenshot to analyse 20 lines of code:

  • it took 13 minutes AND

  • produced ZERO OUTPUT

  • produced ZERO code changes AND

  • produced ZERO words as response AND

  • used 5% of API

Even its typing got extremely slow. Before, entire blocks of text - whether the reply itself or the progress it was describing while thinking - were appearing all at once and extremely fast one after the other.

So that makes Opus 4.6 is practically unusable.

This happens only with Opus 4.6 which - for weeks - until an hour ago before upgrading the subscription., was working perfectly with exactly the same settings.

Since upgrading my subscription a few hours ago, I have only submitted three prompts (the same prompt repeated three times), and each time the result was identical — no output.

I have tried logging out completely, terminating all sessions, reinstalling Cursor, changed to HTTP1.1, disabling the VPN, Cursor’s network diagnostics (all tests passed), restarting my PC, etc. Nothing has changed.

This started immediately after upgrading from the $20 plan to the $50 plan. Or perhaps just before and might be related to the prompt asking to upgrade the plan to the 60USD.

This is in Cursor IDE, Version: 2.6.22, on Window 10

Why is this happening?

Could you please help?

Thank you,

Ric

2

Hi there!

We detected that this may be a bug report, so we’ve moved your post to the Bug Reports category.

To help us investigate and fix this faster, could you edit your original post to include the details from the template below?

Bug Report Template - Click to expand

Where does the bug appear (feature/product)?

  • Cursor IDE
  • Cursor CLI
  • Background Agent (GitHub, Slack, Web, Linear)
  • BugBot
  • Somewhere else…

Describe the Bug
A clear and concise description of what the bug is.

Steps to Reproduce
How can you reproduce this bug? We have a much better chance at fixing issues if we can reproduce them!

  1. …
  2. …
  3. …

Expected Behavior
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Screenshots / Screen Recordings
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Operating System

  • Windows 10/11
  • MacOS
  • Linux

Version Information

  • For Cursor IDE: Menu → About Cursor → Copy
  • For Cursor CLI: Run agent about in your terminal
IDE:
Version: 2.xx.x
VSCode Version: 1.105.1
Commit: ......

CLI:
CLI Version 2026.01.17-d239e66

For AI issues: which model did you use?
Model name (e.g., Sonnet 4, Tab…)

For AI issues: add Request ID with privacy disabled
Request ID: f9a7046a-279b-47e5-ab48-6e8dc12daba1
For Background Agent issues, also post the ID: bc-…

Additional Information
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Does this stop you from using Cursor?

  • Yes - Cursor is unusable
  • Sometimes - I can sometimes use Cursor
  • No - Cursor works, but with this issue

The more details you provide, the easier it is for us to reproduce and fix the issue. Thanks!

4

Hey, thanks for the detailed report. I can see you’ve already tried a lot of troubleshooting like HTTP/1.1, turning VPN off, reinstalling, and running diagnostics. That helps narrow it down.

Since this only happens with Opus 4.6 and started around the time your plan changed, it looks like it might be a routing issue on our side, not something in your setup.

To dig in, I’ll need a Request ID from one of the failed requests. You can get it from the three-dot menu in the top right of the chat panel, then Copy Request ID. If you can, grab it from one of the 13-minute attempts that returned zero output.

For now, can you try the same prompt with a different model like Sonnet 4.6 or GPT-5. If those work, it confirms the issue is isolated to Opus routing and not your connection.

The team is aware of related Opus performance issues. Your report with the Request ID will help us pinpoint what’s happening on the backend. Let me know how it goes.