You can try that out yourself by launching a Codespace using this link: https://
codespaces.new/simonw/codespa
ces-llm?quickstart=1
… Notes on how I got this working: https://
simonwillison.net/2025/Aug/13/co
despaces-llm/
… – plus a detailed TIL on using devcontainer.json to configure Codespaces:

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