Chat with Grok, free in your browser
xAI's Grok. Conversational, with a fast coding variant.
Updated June 2026
Choose a model
Grok is xAI's model family. It has a direct, conversational style and handles coding fine. Chat with it on OneCompiler in the browser, with streaming output and highlighted code.
It works well as a general assistant. The Grok Code Fast variant is tuned for quick, code-focused replies when you don't want to wait.
Answers come back as Markdown with copyable code, so anything Grok writes is easy to take into your editor and run.
Learn more about Grok on the official site
Best for
- Direct, conversational answers
- Everyday questions
- Fast code generation (Grok Code Fast)
- Quick iteration while building
Grok models on OneCompiler
| Model | Good for | Plan |
|---|---|---|
| Grok 4.3 | The general model. Conversational and capable. | Free |
| Grok Code Fast 1 | Tuned for fast, code-focused replies. | Free |
What you can do with Grok
- Ask a quick question and get a direct answer
- Generate a snippet fast with Grok Code Fast
- Draft or rewrite some text
- Explain a concept in plain terms
- Iterate on code while you build
- Brainstorm ideas
How it works
- 1. Pick a Grok model above and choose Start chatting.
- 2. Ask your question — answers stream in with syntax-highlighted code.
- 3. Copy any code block, or paste it into the OneCompiler editor to run it in the browser.
How Grok compares
Grok is a capable general model with a direct style, plus a fast variant aimed at code. It overlaps with GPT for everyday use; pick Grok Code Fast when you want quick snippets, and consider Claude or DeepSeek when a coding task needs more depth.
Frequently asked questions
Is Grok free here?
Yes, within the usual daily limits.
What's Grok Code Fast?
A Grok variant tuned for quick, code-focused replies. Handy when you want snippets fast.
Which Grok should I use?
Use Grok 4.3 for general questions and Grok Code Fast when you mainly want quick code.
Can Grok write and run code?
Yes. It returns copyable code blocks; run them in the OneCompiler editor, which supports 100+ languages.
Do I need an xAI account or API key?
No account and no API key. You sign in to OneCompiler to start chatting and to keep your history.
Is my conversation private?
Yes. Chats are private to your account by default and only shared if you choose to.