Instant Sandboxes. Zero Config.

Send us code → get a live URL. No templates, no cold installs, no broken dependencies. Just self-healing sandboxes that start warm and execute instantly.

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Time to Execution

From code submission to running application

Traditional Sandbox45-120s

Cold start + npm install + buildMost of the wait

45-120s

Benchify Sandbox2-5s

Container boot only • Pre-bundled executionReady instantly

20-60× Faster

Code to live URL

The Sandbox Reality Check

"Fast boot times" sound great until you realize the real bottleneck isn't the container — it's everything that happens after.

LLM Code → Live URL: The Hidden Timeline

What actually happens when you run generated code

LLM generates code

The actual work

3-15s

Container cold start

Unavoidable infrastructure

2-5s

Detect dependencies

Parse package.json, imports

5-10s

npm install

Download + resolve dependency tree

20-60s

Build/compile

Webpack, Vite, TypeScript, etc.

10-30s

Code execution

Finally!

0.1s

Productive work:3-15s

Infrastructure overhead:37-105s

Developer time wasted:85-95%

Templates: The Brittle Workaround

Sandbox providers tried to solve this with pre-built templates. Great idea, fragile execution.

Generated code must fit template structure perfectly

Wrong import paths break everything

Missing dependencies = silent failures

Template updates require complete rebuilds

When LLM Code Breaks Templates

Most of the time, generated code doesn't fit templates perfectly. The result? Broken execution.

TypeError: Cannot resolve module

Wrong import structure for template

Build failed: Missing dependency

LLM used package not in template

Result: Expensive LLM callbacks to fix "working" code

The Developer Tax

Every generated code execution becomes a 2-minute coffee break. Every broken template becomes an expensive LLM re-generation.

$50-200

Cost per failed generation cycle

Skip the Wait. Start Warm.

We solve dependency resolution, builds, and repairs before your container even starts. Code arrives ready to execute, not ready to install.

No Templates. Pure Inference.

We analyze your code's imports, file structure, and dependencies to infer the optimal runtime environment. Works with any project pattern, any framework, any structure.

Code Analysis Pipeline

Generated Code

React + TypeScript

import React from "react"

React 18 + TS + Vite

Next.js API

export default function handler

Next.js 14 + API Routes

Express + Prisma

import { PrismaClient }

Node.js + Express + DB

Runtime Configuration

Automatic build commands, dependency resolution, environment setup

Dependency Resolution

Popular Packages

react

npm install4-8s

Benchifycached

99.8%

lodash

npm install2-5s

Benchifycached

99.9%

@types/node

npm install3-6s

Benchifycached

99.7%

axios

npm install2-4s

Benchifycached

98.9%

tailwindcss

npm install8-15s

Benchifycached

97.2%

Global cache across all projects • Zero network I/O for popular packages

Pre-Cached Dependencies

Popular packages are resolved against a global cache that spans all projects. Most dependencies are already cached, making them available instantly instead of waiting for npm install.

Warm Start Architecture

Containers boot with pre-cached layers, optimized runtimes, and runtime-ready file structures. No cold installs, no build compilation, just execution.

Container Lifecycle

Cold Container

OS boot + runtime init2-5s

Install Node.js/npm5-10s

Download dependencies20-60s

Build/compile10-30s

Application start2-5s

Total: 39-110s

Warm Container

Container boot (pre-cached)1-2s

Write optimized files0.2s

Execute pre-built code0.1s

Total: 1-3s

30-90× Improvement

Cold boot only • All overhead moved to pre-processing

Static Analysis & Repair

Auto-Fixed Issues

Missing dependenciesAuto-detected & added

import axios → package.json updated

Version mismatchesCompatibility transform

React 18 syntax → React 17 compatible

Stray diff markersRemoved automatically

<<<< HEAD removed from code

Import path errorsPath resolution

../utils → resolved to actual file

Self-Healing Code

Before execution, we run fast static analysis to fix common LLM generation errors. Broken code becomes working code — no expensive LLM callbacks required.

Three Steps. Zero Wait.

Your LLM generates code. We handle everything else. From raw code to live URL in seconds, not minutes.

LLM Client

Your application sends generated code to our API

GPT-4 / Claude

function TodoApp() {

const [todos, setTodos] = ...

return <div>...</div>

}

POST

Benchify API

Typical time:~50ms

Benchify Call

We analyze, optimize, and pre-bundle your code

Static analysis

✓

Dependency resolution

✓

Code optimization

✓

Bundle generation

✓

Processing time:~200ms

Sandbox

Pre-optimized code deploys to warm container

Container Status

Running

https://abc123.benchify.app

npm install

build time

Deployment time:~1-2s

Total Time to Live URL

50ms

API call

200ms

Processing

1-2s

Container boot

≈ 2 seconds

From LLM-generated code to live, running application.No builds, no installs, no templates.

One API Call. Instant Sandbox.

Drop Benchify into your existing workflow with a single API endpoint. Works with any LLM, any framework, any deployment pattern.

REST API

Simple as a POST Request

Send generated code to our API and get back a live URL.No SDK required, no complex integration, just HTTP.

Works with any programming language

Handles authentication and scaling automatically

Returns live URL in 2-5 seconds

Basic Integration

Request

POST https://api.benchify.app/v1/sandbox

Authorization: Bearer your_api_key

Content-Type: application/json

{

"code": "// Your generated code here",

"framework": "auto"

}

Response (2-5s later)

200 OK

{

"url": "https://abc123.benchify.app",

"status": "running"

}

Average Response Time

2.3s

Including container boot and deployment

Language SDKs

Node.jsJavaScript/TypeScript

import { Benchify } from '@benchify/node'

const result = await benchify.create(code)

PythonAI/ML workflows

from benchify import Client

result = client.create(code)

GoBackend services

import "github.com/benchify/go-sdk"

result, err := client.Create(code)

SDKs Available

Native Language Support

Official SDKs for popular languages with built-in retry logic, error handling, and type safety.Zero configuration required.

Node.js

Available

Python

Available

Rust

Coming Soon

Java

Coming Soon

Ruby

Coming Soon

Perfect for Any AI-Generated Code Workflow

From simple prototypes to complex applications, Benchify handles any generated code pattern

AI Code Assistants

Instantly preview Cursor, GitHub Copilot, or Claude generations

React components

API endpoints

Database queries

Agent Workflows

Run agent-generated code in isolated environments

AutoGPT apps

LangChain tools

Custom agents

Prototyping Tools

Build no-code platforms with instant code execution

UI builders

Form generators

Chart creators

Education Platforms

Let students run AI-generated examples instantly

Code tutorials

Learning exercises

Homework demos

Stop Waiting. Start Building.

Join developers who've eliminated the sandbox bottleneck. Turn any AI-generated code into a live URL in seconds, not minutes.

2-5s

Code to live URL

Zero

Configuration required

92%

Issues auto-fixed

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Trusted by developers at

Y Combinator

500+ AI apps

Enterprise ready

Free tier includes 100 sandbox executions per month.No credit card required.