synthi

26'

All systems operational

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Built so you can focus on your ideas. It handles the rest itself. You'll love it.

auto-detects language

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AI ReadyUTF-8Plain Text

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Compile time

Languages

Tracking scripts

Uptime target

Synthi is where everybody builds, faster.

Start building for free. Unlock advanced AI reasoning when you're ready to scale.

FREE FOREVER

Core

Everything you need to build great software.

Real-time code analysis

Cloud-based compilation

Smart code suggestions

Seamless collaboration

Unlimited projects

PREMIUM

Pro

For developers who demand more.

Everything in Core

Advanced AI reasoning

Priority compilation

Enhanced model access

Premium support

Your work is yours. Forever.

No lock-in, no proprietary traps. Export or self-host your work at any time. Synthi strengthens your workflow - without holding it hostage.

Code Beyond Hardware,
Build at Instant.

Your code, accelerated. AI that understands context, predicts errors, and delivers intelligent suggestions.

1const data = fetchMetrics()
2 
3// ✦ optimize: memoize expensive computation|
4const cached = useMemo(() => calc(data), [data])
5 
6return cached.filter(isValid)

✦

AI Pair Programmer

Integrated AI assistants help optimize, refactor, and guide your code - so your ideas come to life faster and smarter.

Get Early Access

Be among the first to experience the future of coding.

0 developers on the list

if (user.role === "admin")
  return data.unfiltered()
}

Bugs Fixed Before You Notice.

Real-time scanning detects errors and offers intelligent fixes for cleaner code.

local

synthi cloud

Code Without Hardware Limits.

Cloud compilation with instant delivery - infinitely scalable, zero local strain.

1function render() {
return <View>│
  <Text>Hello</>│
</View>

Seamless Collaboration

Work together in real time with AI-enhanced insights across the cloud.

Claude Code

Codex

Cursor

GPT

Your Tools, Your Choice.

Synthi doesn't lock you in. Use Claude Code, Codex, or any AI tool you prefer - we integrate, not isolate.

kernel/render.rs
42fn draw_frame(&mut self) {
43  self.buffer.clear(BLACK)
44  self.compositor.flush()

HMR

Preview

idle

Hot Reload for Compiled Languages

See changes instantly - whether you're building an OS kernel, a game engine, or a systems server. Compiled HMR, seamless.

Polyglot by design

Any language. One IDE.

const app = express();
app.get("/", handler);

TypeScript

See the difference

Drag to compare

Local IDE

Build time:47.2s

CPU usage:98%

Fan noise:Jet engine

HMR:Not supported

⚠ Out of memory - restart required

Synthi Cloud

Build time:0.18s

CPU usage:2%

Fan noise:Silent

HMR:Instant

✓ All systems operational

The honest comparison

Synthi vs. the rest

Feature	VS Code	Replit
Cloud Compile	-
Built-in AI	-
Compiled HMR	-	-
Real-time Collab	-
Full Offline Mode		-
Free Forever Tier		-

Switch in minutes

Merge with Synthi

Your workflow, your extensions, your settings - nothing left behind.

Sign up & open Synthi

One click - your cloud workspace is ready in seconds. No installs, no setup.

Import your project

Clone from Git, drag & drop a folder, or connect your existing repo. It just works.

Bring your extensions

Install any VS Code extension via our VSIX tool. Your entire extension library carries over.

Sync settings & keybinds

Import your settings.json and keybindings. Synthi feels exactly like home.

Build - faster than before

Cloud compile kicks in automatically. Same project, dramatically faster builds.

Questions?

Quick answers to what you're probably wondering.

Is Synthi really free?

Yes. The Core plan is free forever - real-time analysis, cloud compilation, AI suggestions, collaboration, and unlimited projects. No credit card, no trials, no tricks.

When does it launch?

We're in closed alpha. Join the waitlist to secure early access - the first wave of invites goes out soon.

Can I use my own AI tools?

Absolutely. Synthi integrates with Claude Code, Codex, Cursor, and more. We're a platform, not a walled garden - use whatever makes you productive.

What about my data?

Your code stays yours. No training on your data, no telemetry surprises. Export or self-host at any time - zero lock-in, guaranteed.

What makes this different from VS Code or Cursor?

Synthi compiles in the cloud, not on your machine. That means instant builds regardless of your hardware, native HMR for compiled languages, and AI that understands your entire project context - not just the open file.

Zero tracking. No cookies. We respect developers.

Ready to build the future?

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