Cursor vs GitHub Copilot vs Codeium (2026)

AI coding assistants have moved from autocomplete-on-steroids to genuine pair-programmers in 2025-2026. Three platforms dominate: Cursor (forked VS Code with deep AI integration), GitHub Copilot (Microsoft's offering, multi-IDE), and Codeium (free tier-led challenger).

Cursor

Forked VS Code, $20/month Pro tier, supports GPT-5, Claude 4.7 Opus, custom model selection. Agent mode, Composer for multi-file edits, Tab AI for inline suggestions. Best AI integration of the three.

GitHub Copilot

$10/month Individual, $19/month Business. Plugs into VS Code, JetBrains, Neovim, others. Solid completions, decent chat, agent mode added in 2025. Bundled in Pro tier of GitHub Enterprise.

Codeium

Generous free tier covers individual use. $15/month Pro adds advanced features. Plugs into more IDEs than Copilot. Quality has caught up to Copilot in 2026.

Decision matrix

Cursor for the best AI integration if you can switch from VS Code. Copilot for IDE flexibility within familiar editors. Codeium for the free tier or pricing.

Wrapping up

Cursor for power users willing to swap editors. Copilot for status-quo VS Code/JetBrains users. Codeium for free or budget. Get any at the AI coding tools discount.