Codeground AI

Rust Online Compiler

Write Rust, rustc, see errors or stdout. Faster than waiting on cargo for a one-file test.

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It will inspect your code, think, and propose changes you can Keep or Discard inline.

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Rust

About this editor

Write Rust, rustc, see errors or stdout. Faster than waiting on cargo for a one-file test.

Practice ownership, lifetimes, and pattern matching with full borrow-checker feedback in the output panel—not a simplified subset. Ideal for one-file exercises, comparing error messages, and sharing a Rust playground link before you commit to a local toolchain. Multi-crate Cargo projects still belong in a workspace.

Key features

Rust runs server-side

rustc on single-file Rust in a sandbox. Full borrow-checker, not a trimmed-down subset.

One-click Run

Output, stderr, and compiler errors land in the panel below. No local install.

VS Code–like editor

Syntax highlighting, bracket matching, and shortcuts that feel familiar if you use VS Code.

Shareable links

Save with a title and copy the URL — handy for reviews, homework, or interview screens.

No setup

Open the page and start typing. Account optional for basic runs.

Room to grow

Need multiple files? Open a cloud workspace from the top bar.

Getting started

  1. 1
    Write your code

    Type or paste Rust in the editor. A starter template is there if you want to run something immediately.

  2. 2
    Press Run

    Check the output panel underneath for results or errors.

  3. 3
    Edit and rerun

    Change a line, run again. Most people loop here until the output looks right.

  4. 4
    Save for a permalink

    Add a title when you save. You get a link you can send to a teammate or drop in a doc.

  5. 5
    Bigger project?

    Cloud workspaces handle multi-file repos and longer sessions. Link is in the top nav.

Common questions

Is this Rust compiler free?

Yes. No payment and no account required for a quick run. Sign in if you want saves tied to your profile.

Do I need to install anything?

No. Code runs on Codeground servers in a sandbox. Just open the page.

What Rust version runs here?

rustc in a sandbox. Multi-crate Cargo work belongs in a workspace.

Can I share my code?

Save with a title to get a permalink, or share the playground URL as-is.

Works for interviews?

Yes. Share a ground link, or use interview mode for a live shared editor.

Multiple files?

This page is for single-file snippets. Use a cloud workspace for full projects.

Will my code still be here tomorrow?

Anonymous sessions can reset. Save with a title (and sign in) for a stable link.

Why use this instead of installing locally?

Good for quick tests, learning, and sharing a snippet. For large offline work, a local IDE still wins.

Is this an online Rust IDE or playground?

A browser playground with syntax highlighting and one-click Run — run Rust online without a full local install. Cloud workspaces cover multi-file projects.

Is there a free Rust playground?

Yes. Compile and run Rust online for free with rustc—no Rustup install required for single-file runs.

Is this a Rust online IDE?

Browser Rust IDE with editor and rustc—great for snippets. Full Cargo workspaces need the cloud workspace.

Can I run Rust online without installing Rust?

Yes. rustc runs on our servers. Open the page in a browser—no rustup on your machine.