+Is SyncodeLive really free?
Yes. SyncodeLive is free with no credit card, no trial, and no paid tier. Every feature, including voice chat, the AI reviewer, read-only sharing, the share-with-LLM flow, and execution across 26 languages, is available to every user at no cost.
+Does SyncodeLive require a signup or account?
No. Click new session and you get a shareable URL immediately. No email, no password, no account. Anyone you send the link to can join with one click and edit alongside you in real time.
+How do I share code in real time with someone?
Open syncodelive.com, click new session, and you get a URL like syncodelive.com/x7k2mq. Paste your code into the editor, then send the URL in Slack, Discord, email, or any chat. Your teammate opens the link and you are both in the same editor with live multi-cursor editing, an AI reviewer in the session, and optional voice chat. No signup on either side.
+How can I share my code with ChatGPT, Claude, or another LLM?
Click the brainstorm-with-your-LLM button in the editor. It copies a pre-written prompt to your clipboard. Paste it into ChatGPT, Claude, Gemini, or any LLM that can fetch URLs. The prompt tells the LLM to fetch your session JSON before every turn, so as you edit in real time the AI reads the latest state. The LLM can also POST a proposed edit back; you see a diff card in your editor and approve or reject with one click.
+Can I run code in the browser without installing anything?
Yes. JavaScript runs natively in your browser. Python runs in a WebAssembly runtime, also in the browser, with no server round-trip. Twenty-four more languages (Go, Rust, Java, C, C++, C#, Ruby, PHP, Swift, Kotlin, Scala, R, Dart, Lua, Perl, Shell, SQL and others) run through an edge LLM that emulates the compiler. No installs, no accounts, no setup.
+What programming languages does SyncodeLive support?
26 languages with real execution: JavaScript and Python run natively in the browser; TypeScript, Go, Rust, Java, C, C++, C#, Ruby, PHP, Swift, Kotlin, Scala, R, Dart, Lua, Perl, Shell, and SQL run through an edge LLM emulator that returns the output a real compiler would produce. SyncodeLive also supports .prompt as a first-class language for writing and iterating on prompts for ChatGPT, Claude, and other LLMs.
+Does SyncodeLive have voice chat?
Yes. Every session has built-in voice chat using peer-to-peer WebRTC, so audio goes browser to browser without passing through our servers. Push-to-talk is on the space bar, and the in-session call dock shows who is speaking. Voice is included for every user at no cost.
+Can I share my code as read-only so others can view but not edit?
Yes. The session owner can flip a read-only toggle in the editor. Everyone else on the link still sees your live cursor and edits in real time, but cannot type. This is useful for code reviews, demos, teaching, and presentations. Read-only mode is free; it is not gated behind a paid tier.
+How is SyncodeLive different from codeshare.io?
codeshare.io has done real-time code sharing since 2013 and supports multi-cursor editing, code execution, and video chat on its Pro tier. SyncodeLive starts from the same one-link sharing idea and adds three things: an AI reviewer in every session that reads your code as you type, voice chat built in for free, and a wider language reach (26 languages with execution, including via an edge LLM emulator for the long tail). SyncodeLive has no paid tier.
+How does SyncodeLive compare to Replit, CodePen, or StackBlitz?
Replit, CodePen, and StackBlitz are full project environments. They are great when you are building or hosting an application. SyncodeLive is built for the moment you want to share a snippet and work on it with someone in real time without setting anything up. No account, no container boot, no project to create. Open a URL, share it, and the editor is live in seconds. The AI reviewer is in every session for free.
+How long are sessions kept, and when do they expire?
Sessions live for 48 hours after the last edit. As long as someone keeps editing, the session stays at its URL. Once 48 hours pass with no activity, the session is cleared and the URL returns a 410 Gone response. There is no signup, no inbox of saved files, and no project to manage. The link is the entire session.
+Is the code I write in a SyncodeLive session private?
Sessions are not publicly listed and not indexed by search engines. The URL is a 6-character random ID with 2.2 billion possible combinations, so the link is unguessable in practice. Anyone with the link can read and edit by default, which is the point of a share-link tool. Use read-only mode to lock editing. Do not paste real secrets or credentials into any public-share tool, including this one.