Opus 4.5 nerfed?

Hey, thanks for the heads‑up. We don’t have confirmed model changes yet. We do see a few fresh issues around Opus 4.5:

Could you share:

  • 2-3 concrete before/after examples with the same prompt
  • Model variant: base or thinking
  • Time and timezone of the problematic requests
  • Request IDs from Chat menu > Copy Request ID for those messages
  • Cursor version and OS: Help > About
  • Screenshots/links to chats or console errors

Once you send the data, we’ll check request traces and escalate if needed.