I can't uss GPT5.6 via Codex-cli

I can uss GPT5.6 via Codex-mac,but I can’t uss GPT5.6 via Codex-cli.Does someone know why?

Have you updated your CLI version? What version are you running?

From command line run:

npm install -g @openai/codex

Or on mac:

brew update
brew upgrade --cask codex

Try to remove model cache:

pkill -f “codex app-server”
rm ~/.codex/models_cache.json
codex --version
codex -m gpt-5.6-sol

You might need to restart your app-server daemon after the update.