[Bug] Claude Code uses downgraded model instead of selected Opus 4.8

Open 💬 0 comments Opened Jun 26, 2026 by netwrkx

Bug Description
Claude code uses lower model to the one i selected. i selected Opus 4.8 but the session says My knowledge cutoff is August 2025. when i probe further it says "The model I'm running as is Claude Sonnet 4.6 (exact ID claude-sonnet-4-6) — that's stated in my environment context for this session." i confirmed my usage and i am within my limit. why is that? On the cutoff: my reliable training knowledge runs to August 2025. That's why I genuinely didn't know about Gemma 4

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.1.187
  • Feedback ID: dfe26af1-1b7f-45b4-86e1-01e17cd445ac

Errors

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