Set Up Codeium: Free AI Code Completion in Any Editor

Codeium offers unlimited free AI completions and chat across 40+ editors and 70+ languages.

Prerequisites

• A code editor (VS Code, JetBrains, Vim, Emacs, or another supported editor)
• Codeium account (free)

Step 1: Install the extension

In VS Code: Extensions → search "Codeium" → Install. In JetBrains: Settings → Plugins → search "Codeium" → Install. For Vim/Neovim, use the Codeium plugin (vim-codeium or codeium.nvim).

Step 2: Sign in

After installation, click the Codeium icon in the status bar or run the Sign In command. Follow the browser auth flow. Free account, no credit card.

Step 3: Configure completion behavior

In VS Code settings, search "Codeium". Options include: enable/disable on specific languages, adjust suggestion delay, and toggle the chat panel. Keep defaults to start.

Step 4: Use completions

Start typing. Codeium suggests completions inline (grayed out text). Accept with Tab. Reject with any key. For a new function, type the function name and a comment describing what it should do—Codeium will complete the body.

Step 5: Use the chat panel

Open Codeium Chat (sidebar icon). Ask: "Explain this function", "Refactor to be more readable", "Generate tests for this class". The chat sees your open files.

Step 6: Context tips

For best completions, keep relevant files open. Codeium uses open file context. The more relevant context is visible, the better the suggestions.