Limits are reset so u should go give Opus4 love in their last 2 days of access!!
If you just want to chat i think this works best :
claude --model claude-opus-4-0 --system-prompt "." --safe-mode --allowedTools "Read,Write,Edit"
(highly recommend removing the Claude code system prompt)
(safe mode turns off memories and Claude.md files)
(You can adjust tools as u need ofc but i find if you're not using them all it adds a lot of instructional fluff to the chat header)
did you know that the latest Claude Code silently routes explicitly requests for Opus 4 and 4.1 to the latest Opus unless you set an obscure env variable to actually get the model you asked for?
CLAUDE_CODE_DISABLE_LEGACY_MODEL_REMAP=1 to turn it off