Codeium
Free AI code completion, chat, and agent across 40+ editors
Codeium is one of the most widely used AI coding assistants, with a genuinely free individual plan that gives developers unlimited autocomplete, chat, and basic agent features across 40+ IDEs and 70+ languages. The same team also ships Windsurf, an AI-native editor built on VS Code that bundles Codeium plus the Cascade agent for full-project edits, putting it head-to-head with Cursor and Claude Code.
Visit CodeiumWhat is Codeium?
Codeium is an AI coding assistant built by Exafunction (now operating as Codeium). It launched in 2022 with a clear thesis: inline AI code completion should be free for individual developers, and the revenue should come from teams and enterprises who need governance, analytics, and private deployments. That positioning made Codeium one of the fastest-growing developer tools of the last few years, with millions of daily users across IDEs.
The core product is inline autocomplete plus a chat sidebar that understands your current file and, on paid plans, your entire repository. Completion works across 70+ programming languages including mainstream picks like Python, TypeScript, Rust, Go, and Java, plus long-tail languages like Elixir, Haskell, and Solidity. IDE coverage is unusually wide: VS Code, all JetBrains IDEs, Neovim, Vim, Emacs, Xcode, Sublime Text, Android Studio, Eclipse, and dozens more. In practice, if you have a mainstream editor, Codeium works in it.
In 2024 Codeium launched Windsurf, an AI-native editor built on VS Code that bundles Codeium completion with Cascade, an agent that can read and edit multiple files across your repository. Windsurf competes directly with Cursor and Claude Code, with an emphasis on smooth integration between autocomplete, chat, and agent inside a single editor. For teams that want a single-vendor AI coding stack, Windsurf is now Codeium's flagship experience.
On the enterprise side, Codeium is one of the few major AI coding tools that supports fully self-hosted and air-gapped deployments. Customers in finance, defense, and healthcare can run Codeium inside their own VPC or on-prem so code never leaves the security boundary, with options for fine-tuning on private codebases. Combined with SSO, audit logs, and per-repo permissions, this positions Codeium well for enterprise adoption where GitHub Copilot's cloud-only model is a blocker.
Key Features
Inline Autocomplete
Fast single-line and multi-line suggestions inside your editor, tuned for low latency. Works across 70+ languages with per-language tuning for idiomatic output.
Codeium Chat
Sidebar chat that understands your current file, selection, and (on paid plans) the full repository. Ask for refactors, explanations, tests, or fixes without leaving the editor.
Cascade Agent
Multi-file agent inside Windsurf that can plan, edit, and run code across the repo. Reads imports, tests, and docs to make coherent changes, not just one-file edits.
Windsurf Editor
AI-native editor built on VS Code that bundles Codeium completion plus Cascade. Smooth agent/autocomplete integration, competitive with Cursor and Claude Code.
Self-Hosted / Air-Gapped
Enterprise deployments can run inside a customer VPC or fully on-prem so code never leaves the security boundary. Rare among major AI coding tools.
40+ IDE Integrations
VS Code, all JetBrains IDEs, Neovim, Vim, Emacs, Xcode, Sublime, Android Studio, Eclipse, and more. The widest IDE coverage among AI coding assistants.
Pricing
Codeium's pricing is individual-free, team-paid. The free plan is not a trial and has no usage caps on autocomplete.
| Plan | Price | Best For | Details |
|---|---|---|---|
| Individual Free | $0 | Solo devs | Unlimited autocomplete, chat, basic agent, 40+ IDEs |
| Pro | $15/mo | Power users | Premium models, faster Cascade, longer context, priority |
| Teams | $35/user/mo | Dev teams | Admin, analytics, repo-wide context, SSO, usage controls |
| Enterprise | Custom | Large orgs | Self-hosted / VPC, fine-tuning, audit logs, dedicated support |
Pricing as of April 2026. See codeium.com/pricing for current rates. Student and open-source discounts available.
Pros & Cons
Pros
- Genuinely free individual tier with unlimited autocomplete, not a trial
- Widest IDE coverage in the category: 40+ editors including Vim, Emacs, Xcode
- Self-hosted and air-gapped deployments for regulated enterprises
- Windsurf + Cascade give a modern agent experience head-to-head with Cursor
- Strong privacy posture: no training on paid user code, opt-out on free
Cons
- GitHub integration is less deep than Copilot's (PR reviews, workspace agent)
- Premium agent quality depends on model choice; not always as sharp as Claude Code
- Brand has two surfaces (Codeium plugin + Windsurf editor) that can confuse new users
- Some long-tail IDE integrations lag the VS Code flagship
Alternatives to Codeium
AI coding is the most competitive developer-tools category. The right alternative depends on your editor, your cloud, and your governance needs.
GitHub Copilot
Deepest GitHub integration, best workspace agent, mature enterprise governance. Strong default if your team lives inside GitHub.
Cursor
AI-native editor competing directly with Windsurf. Polished agent experience and strong multi-file edits.
Windsurf
Codeium's own AI-native editor with Cascade agent. Worth evaluating alongside the plugin if you want a single experience.
Tabnine
Enterprise-first AI code assistant with private deployments and strong governance. Good alternative when self-hosting is mandatory.
Frequently Asked Questions
What is Codeium?
Codeium is an AI coding assistant that provides inline autocomplete, a chat sidebar, and agent features inside 40+ editors and IDEs including VS Code, all JetBrains IDEs, Neovim, Vim, Emacs, Xcode, Android Studio, and Sublime Text. It supports 70+ programming languages with per-language tuning for idiomatic output. The same team also builds Windsurf, an AI-native editor built on VS Code that bundles Codeium plus the Cascade multi-file agent.
Is Codeium really free?
Yes. Codeium offers unlimited inline autocomplete and chat on its Individual Free plan with no trial timer and no payment method required. Pro adds access to premium models, faster Cascade agent turns, longer context, and priority during peak load for $15 per month. Teams and Enterprise plans add admin controls, analytics, repo-wide context, SSO, and self-hosting options for organizations that need governance and compliance.
Is Codeium better than GitHub Copilot?
GitHub Copilot has deeper GitHub integration, a stronger enterprise governance story, and a more mature workspace agent through Copilot Workspace. Codeium matches or beats Copilot on raw autocomplete quality for many languages, has a far more generous free tier, and offers self-hosted and air-gapped deployments that Copilot does not support. For individual developers, Codeium's free tier alone usually makes it the strongest first choice; for GitHub-native enterprises, Copilot still holds an edge.
What is Windsurf?
Windsurf is Codeium's AI-native code editor, built on VS Code and launched in 2024. It bundles Codeium's inline completion plus Cascade, an agent that can read and edit multiple files across your repository with full project context. Windsurf competes directly with Cursor and Claude Code, with an emphasis on smooth integration between autocomplete, chat, and agent inside a single editor. It is Codeium's flagship experience for teams that want a fully AI-native development loop.
Does Codeium train on my code?
Codeium does not train on code from paid Pro, Teams, or Enterprise users. Free users can opt out of training in their account settings. Enterprise deployments can run entirely self-hosted or inside a customer VPC so code never leaves the customer security boundary, and some customers fine-tune Codeium on their private codebases. This privacy posture is a key selling point in regulated industries like finance, defense, and healthcare.
What are the best alternatives to Codeium?
Top alternatives are GitHub Copilot for the deepest GitHub integration and mature enterprise governance, Cursor for a polished AI-native editor competing with Windsurf, Tabnine for enterprise-focused private deployments, Amazon Q Developer (formerly CodeWhisperer) for teams already on AWS, and Claude Code for agentic CLI coding workflows. Codeium's differentiators are its genuinely free individual tier, unusually wide IDE coverage, and fully self-hosted / air-gapped deployment options.
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