Codeium

Overview Codeium is the AI code completion tool that spent years being "the free one that's actually usable" and, by 2026, has grown into a serious contender with paid tiers, a 70+ language footprint, an IDE plugin ecosystem broader than any competitor's, and a sibling product (Windsurf) that competes head to head with Cursor. It launched in 2022 under Exafunction, rebranded to Codeium, and by the time GitHub Copilot was still figuring out how to price for individuals, Codeium had shipped a completion product that most developers could use for free, forever, without asking a manager for a P.O. The one line positioning: Codeium is the AI completion tool for developers who want Copilot class autocomplete without the subscription, without the vendor lock in to GitHub, and without switching editors. It runs in more IDEs than anything else in the category — VS Code, JetBrains, Neovim, Vim, Emacs, Eclipse, Xcode, Sublime, Jupyter, Visual Studio, Android Studio, PyCharm, and roughly forty others. It supports 70+ programming languages including the obscure ones (Solidity, OCaml, Terraform, Verilog) where mainstream tools get lazy. And the free tier is genuinely free — not a trial, not a rate limited tease, but the daily driver product for a huge share of individual users. Under the hood, Codeium runs a mix of its own proprietary completion models and frontier model access on paid tiers (Claude Sonnet 4.5, GPT 5, Gemini 2.5 Pro on Teams and Enterprise). The completion engine has always been the point — trained on…