Codeium
FreemiumFree AI code completion and chat for 70+ languages — the company behind Windsurf IDE, offering fast inline suggestions in any editor
What is Codeium?
Codeium is an AI coding assistant that started life as a free, unlimited autocomplete plugin for developers. It was built by the team that now also makes Windsurf, a full AI code editor based on a VS Code fork with a built-in autonomous agent called Cascade. In 2026, the Codeium brand has largely been folded into Windsurf — Windsurf's free tier is effectively the current home for "free Codeium autocomplete," while the full Windsurf IDE wraps that same completion engine with chat, agent workflows, and a modern AI-native editor.
The core Codeium completion extension still runs in over 70 programming languages and plugs into VS Code, JetBrains IDEs (IntelliJ, PyCharm, WebStorm, GoLand, and friends), Neovim, Vim, Emacs, Eclipse, Android Studio, and more — one of the broadest IDE support ranges of any AI coding tool. Completions are powered by Codeium's own code-tuned models, which deliver low-latency inline suggestions, multi-line completions, and basic refactoring. A chat panel sits alongside the editor for explain-this-code, generate-this-function, and quick refactor prompts.
What makes Codeium / Windsurf Free stand out from GitHub Copilot and Cursor is the generosity of the free tier: unlimited inline completions indefinitely, no credit card required, plus a limited allocation of Cascade agentic flows per month. Paid Windsurf tiers unlock more Cascade credits, faster model access, and additional features for power users and teams. For a developer who mainly wants excellent inline autocomplete without a monthly bill, Codeium / Windsurf Free is still one of the best deals in the entire AI coding category.
⚡ Quick Verdict
Budget-conscious developers who want solid AI completions for free across any editor
Developers who need advanced AI chat, agent capabilities, or the most cutting-edge model quality
Only major AI coding assistant that is genuinely free and unlimited for individuals
Completion quality trails GitHub Copilot and Cursor for complex, multi-file generation
Bottom line: Codeium scores 4.3/5 — Individual developers who want free, unlimited AI code completions across any IDE without paying for GitHub Copilot.
Pricing
Codeium / Windsurf Free: Unlimited inline code completions with no time limit, plus a limited allocation of Cascade agentic flows per month (around 5 on the current free tier). No credit card required to sign up. This is the sweet spot for most solo developers — the pure autocomplete experience is essentially unchanged from when Codeium was a standalone free product.
Windsurf Pro — $15/month: Unlimited completions plus a much larger allocation of Cascade credits each month, access to higher-quality models, and the full Windsurf IDE experience. Priced between GitHub Copilot ($10/month) and Cursor ($20/month), and usually the tier that solo developers upgrade to once they start leaning on agent mode regularly.
Windsurf Pro Ultimate — $60/month: For power users who want effectively unlimited Cascade runs, priority access, and the highest-tier models with minimal rate limiting. Aimed at developers who live inside the agent all day.
Windsurf Teams — $30/user/month: Team billing, admin controls, centralized usage analytics, shared knowledge, and SSO. Targeted at startup and mid-market engineering teams that want AI coding on a managed plan.
Enterprise: Custom pricing with SOC 2 Type II, on-premise or self-hosted deployments, fine-grained access controls, and dedicated support. For regulated industries and larger orgs that can't ship code to a multi-tenant SaaS. See windsurf.com/pricing for the latest official pricing.
Key Features
- Unlimited free inline completions: Low-latency, multi-line AI autocomplete with no monthly token cap on the free tier — a rare thing in the AI coding category in 2026.
- 70+ language support: Python, JavaScript/TypeScript, Go, Rust, Java, C/C++, C#, Swift, Kotlin, Ruby, PHP, SQL, HTML/CSS, and many more.
- Broad IDE support: Official plugins for VS Code, JetBrains (IntelliJ, PyCharm, WebStorm, GoLand, CLion, RubyMine, etc.), Neovim, Vim, Emacs, Eclipse, Android Studio, Xcode, and Jupyter.
- Windsurf IDE (VS Code fork): A full AI-native editor that bundles the completion engine with chat and Cascade in a single environment.
- Cascade agent: Windsurf's flagship agent mode can autonomously execute multi-step tasks — writing files, running terminal commands, reading errors, and iterating — without needing per-step approval.
- Codemaps: A repository-aware navigation feature that gives the model a structured understanding of your codebase for better multi-file reasoning.
- SWE-1.5 model: Windsurf's in-house coding model, tuned for software engineering tasks and used in the free and paid tiers for completions and agent work.
- AI chat panel: Ask questions about highlighted code, generate new functions, refactor in place, and explain unfamiliar codebases.
- Privacy and data handling: Codeium/Windsurf explicitly does not train on user code by default, and enterprise plans offer on-premise or self-hosted deployments for strict data residency needs.
- SOC 2 Type II for enterprise: Paid Teams and Enterprise tiers ship with the standard security controls expected of modern SaaS developer tooling.
Best For
Students, hobbyists, and budget-conscious developers: If you want excellent inline autocomplete with no monthly bill, the Codeium / Windsurf Free tier is one of the best offers on the market. Unlimited completions indefinitely means you can build serious projects without burning a subscription.
Developers who live in non-VS-Code editors: Codeium's native JetBrains, Vim/Neovim, Emacs, and Eclipse plugins are some of the best in the category — far better than most competitors, which often treat anything other than VS Code as a second-class citizen.
Solo builders experimenting with agents: Windsurf Pro at $15/month gives you meaningful Cascade agent credits at a lower price than Cursor, making it a good way to try agentic coding workflows without committing to the most expensive tier on the market.
Small engineering teams and startups: Windsurf Teams at $30/user/month brings admin controls, SSO, and centralized billing without the huge enterprise sales cycle of bigger tools.
Pros & Cons
Pros
- Genuinely free, unlimited inline completions — rare in 2026
- Best-in-class IDE support: JetBrains, Vim, Emacs, Eclipse, not just VS Code
- Windsurf IDE bundles completion plus Cascade agent in a single editor
- Windsurf Pro ($15/month) is cheaper than Cursor ($20/month) at a similar quality
- Fast, low-latency completions that feel responsive even on slower hardware
- SOC 2 Type II, no training on user code by default, on-prem enterprise option
- Codemaps and SWE-1.5 give the model strong repository-wide understanding
- Clear, simple free-to-Pro upgrade path without hidden token economics
Cons
- Cascade agent is still maturing versus Cursor's Composer and Claude Code
- Free tier agent credits (~5 Cascade flows/month) are tight — you'll upgrade fast if you love agents
- Model quality on hard multi-file tasks still trails Cursor + Claude 4.x in some benchmarks
- Branding has shifted from "Codeium" to "Windsurf" which is confusing for returning users
- Pro Ultimate ($60/month) is expensive if you only need heavy agent use occasionally
- Some third-party IDE plugins lag behind the VS Code and JetBrains versions
- Enterprise on-prem deployment requires talking to sales
- Chat panel UX is solid but less polished than Cursor's composer experience
FAQ
Is Codeium the same as Windsurf in 2026?
Essentially yes. Codeium is the autocomplete engine and the original brand. Windsurf is the AI-native IDE (a VS Code fork) from the same team that bundles Codeium's completions with a chat panel and the Cascade agent. In 2026 the company has effectively consolidated under the Windsurf brand — Windsurf Free is the natural home for "free Codeium autocomplete," and the pricing tiers you'll see on the official site are Windsurf Free, Pro, Pro Ultimate, Teams, and Enterprise. The completion extensions for VS Code, JetBrains, Vim, Emacs, Eclipse, and others are still maintained.
Is Codeium really free, and what are the limits?
Yes. Individual developers get unlimited inline code completions with no daily or monthly cap. The limit on the free tier is agentic flows — you get a small number of Cascade agent runs per month (around 5 on the current free plan). That means pure autocomplete is genuinely free for as long as you use it, but if you want heavy agent use you'll hit the wall and need Windsurf Pro ($15/month) or Pro Ultimate ($60/month). No credit card is required to start.
Codeium vs GitHub Copilot vs Cursor — which should I pick?
GitHub Copilot ($10/month) is the easiest default if you live on GitHub and just want reliable inline completions and chat with deep repo integration. Cursor ($20/month) is the most powerful AI-native editor, especially for agent-driven refactors and multi-file workflows. Codeium/Windsurf is the best option if you want a free unlimited autocomplete baseline, strong non-VS-Code IDE support, and a lower-priced path into agent mode via Windsurf Pro at $15/month. For most developers the choice comes down to: free and broad IDE support → Codeium/Windsurf Free; GitHub-centric workflow → Copilot; heaviest agent use and you're happy in VS-Code-based editors → Cursor or Windsurf Pro.
What IDEs and editors does Codeium support?
Codeium has one of the broadest editor support ranges in the AI coding category. Officially supported: VS Code, the full JetBrains family (IntelliJ, PyCharm, WebStorm, GoLand, CLion, RubyMine, Rider, DataGrip), Neovim, Vim, Emacs, Eclipse, Android Studio, Xcode, Jupyter, and more. If you work in JetBrains or Vim all day and resent tools that treat VS Code as the only first-class editor, Codeium is usually the best AI coding assistant available for your environment. The dedicated Windsurf IDE is a separate app for users who do want a VS-Code-based AI-native editor.
What is Cascade, and how does it compare to Cursor Composer or Claude Code?
Cascade is Windsurf's agentic coding mode. You describe what you want in plain English — "add a rate limiter to this endpoint, write tests, and commit" — and Cascade plans the work, edits multiple files, runs terminal commands, reads errors, and iterates until the task is done. It's similar in spirit to Cursor's Composer/Agent mode and Anthropic's Claude Code CLI. In 2026, Cursor's agent is generally the most polished, Claude Code has the strongest raw model reasoning, and Cascade sits between them with a good free on-ramp and tight integration into the Windsurf editor. For simple tasks the three are roughly comparable; for very complex multi-file refactors the model differences start to matter.
Does Codeium train on my code?
No — Codeium / Windsurf has been explicit that it does not train its models on user code by default. For enterprise customers with stricter requirements, Windsurf offers self-hosted and on-premise deployments where your source code never leaves your infrastructure at all. That's one of the main reasons regulated industries and larger enterprises pick Windsurf over purely cloud-hosted alternatives. As always, read the privacy policy and data processing addendum that applies to your specific tier before deploying in production — defaults and enterprise terms can differ.
Should I install the Codeium extension or the full Windsurf IDE?
Install the Codeium extension if you're happy in your current editor — JetBrains, Vim, Emacs, Eclipse, or existing VS Code setup — and you mostly want great inline completions without changing your workflow. Install the Windsurf IDE if you want the full AI-native experience: completion plus chat plus Cascade agent in one environment, tuned end to end. Many developers start with the extension in their existing IDE and only move to Windsurf when they decide they want more serious agent workflows — the extension is the lowest-friction way to try the completion quality before switching editors.
📋 Good to know
Install extension in your IDE. Sign up for free account. Suggestions appear inline immediately.
Code context sent to Codeium servers. Company does not train on user code. On-premise deployment for enterprise.
Teams ($12/user/mo) for centralized admin, usage analytics, and team knowledge sharing.
Extremely low. Install, code, accept suggestions with Tab. Identical workflow to Copilot.