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Can you install plug-ins on VSCodium? If so (I assume so), the answer is yes. Install the Continue plugin and insert your anthropic (or openai or groq) API key. https://www.continue.dev/

Yes, but for some reason, not all official Microsoft plugins work. Some need the VS Code version.

Can you install plug-ins on VSCodium?

Give it a go and let me know how it turns out

Continue should not be an official microsoft plugin as far as I know