CodePair v2 is here - Live coding built for the AI ageLearn more

CodePair

Live coding sessions with real results.

CodePair delivers real-time collaboration, AI assistance, blazing-fast performance, and complete development environments. The ultimate platform for technical interviews and collaborative coding.

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IDE

Blazing Fast Performance

A lightning-fast integrated development environment built for real-time collaboration. Experience smooth typing, seamless multi-cursor editing, and integrated AI assistance with zero lag.

Blazing fast performance with zero input lag

Multi and single cursor with follow support

Integrated AI agent with full file and shell access

Blazing fast performance with zero input lag
Multi and single cursor with follow support
Integrated AI agent with full file and shell access

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CodePair IDE

app.js

const express = require('express');

const app = express();

app.get('/', function(req, res) {

res.send('Hello World!');

});

app.listen(3000);

Blazing Fast

AI

Integrated Coding Agent

Built-in AI coding assistant shared in real-time with hiring managers. Watch how candidates interact with AI, evaluate their prompting skills, and see how they leverage AI to solve coding problems - all visible to interviewers instantly.

Real-time AI interactions shared with hiring managers

See how candidates use AI to solve coding problems

Evaluate prompting skills and AI collaboration approach

AI can read, write, and edit code with full context

Assess candidates' problem-solving methodology with AI

Real-time AI interactions shared with hiring managers
See how candidates use AI to solve coding problems
Evaluate prompting skills and AI collaboration approach
AI can read, write, and edit code with full context
Assess candidates' problem-solving methodology with AI

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AI Coding Assistant

Ready

AI Ready

AI Capabilities

• ORM optimization

• Code generation

• Performance analysis

• Best practices

Terminal

Nix-Powered Environments

Full terminal access with Nix package manager. Install from over 1 million packages instantly - from programming languages to databases, everything just works.

Full bash/zsh terminal with root access

Nix package manager with 1M+ packages

Instant environment setup with flake.nix

Multiple language runtimes (Node, Python, Go, Rust)

Database and service management (PostgreSQL, Redis)

Full bash/zsh terminal with root access
Nix package manager with 1M+ packages
Instant environment setup with flake.nix
Multiple language runtimes (Node, Python, Go, Rust)
Database and service management (PostgreSQL, Redis)

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Terminal - Nix Environment

1M+ packages

candidate@codepair:~/project$

Nix Package Manager

• 1M+ packages available

• Instant installation

• Reproducible environments

• Zero conflicts

Run

Live Applications

Build and run complete applications in real-time. See React frontends, Node.js APIs, and full-stack projects come to life with instant previews.

Automatic port detection and proxy setup

Live reload for frontend applications

Multiple concurrent services (frontend + backend)

Database connections and data persistence

Instant preview links for stakeholders

Automatic port detection and proxy setup
Live reload for frontend applications
Multiple concurrent services (frontend + backend)
Database connections and data persistence
Instant preview links for stakeholders

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Terminal - Live Applications

Auto-proxy

candidate@codepair:~/todo-app$

Running Services

Frontend :3000

API :8000

Database :5432

Live Reload

Git

Real Git Workflow

Full Git workflow integration within CodePair. Candidates work with branches, commits, and PRs just like in real development environments.

Complete Git history and branching support

Real-time commit sharing between participants

Pull request workflow simulation

Diff visualization and merge conflict resolution

Integration with GitHub/GitLab repositories

Complete Git history and branching support
Real-time commit sharing between participants
Pull request workflow simulation
Diff visualization and merge conflict resolution
Integration with GitHub/GitLab repositories

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Git Workflow

Collaborative

candidate@codepair:~/todo-app$

Git Flow

main

Team Collaboration

• Real-time commit sharing

• Shared git history

• Branch synchronization

• Conflict resolution

trusted by leading organizations worldwide

Integrated Coding Assistant

AI Agent Built In

Empower candidates with our optional, ChatGPT-like AI agent. Gain insights into candidates' prompting skills, problem-solving abilities, and how they seamlessly integrate AI into their workflows—all shared with the hiring managers in real-time.

: Real-time AI collaboration: Watch candidates interact with AI, evaluate their prompting skills and problem-solving approach
: Code explanation & generation: AI can explain complex patterns, generate code snippets, and suggest optimizations
: Shared AI context: All AI interactions are visible to interviewers, providing insights into candidate workflows
: Optional integration: Enable or disable AI assistance based on your assessment requirements
: Flexible model support: Default models include CodePair-Pro and CodePair-Fast, with support for any model from OpenAI, Anthropic, Google, Azure, DeepSeek, and more

AI Coding Assistant

AI Ready

Seamless Team Coding Experience

Real-time Multi-Cursor Collaboration

Experience true real-time collaboration with our powerful collaboration engine. Multiple participants can edit simultaneously with perfect synchronization, live cursors, and instant updates. Watch candidates work naturally in a shared environment that feels just like pair programming in person.

src/components/TodoApp.jsx

import ( useState ) from 'react';

function TodoApp() {

const [todos, setTodos]

= useState([]);

return (

<div>

}

Zero Configuration Required

Effortless Environment Setup

Say goodbye to environment headaches. CodePair leverages Nix for instant, precise setup of development environments. With support for over 1 million packages, just add a flake.nix file, and everything from languages to databases is automatically configured.

: Instant configuration: Complete environments ready in seconds with flake.nix files
: 1M+ packages: Access to the entire Nix ecosystem including languages, databases, and development tools
: Reproducible environments: Consistent, identical setups across all interviews and sessions
: Zero maintenance: No more environment debugging or setup delays

flake.nix

See Applications Come to Life

Full Application Builds & Instant Previews

Watch candidates build and run complete applications in real-time. From React frontends to Node.js APIs, full-stack projects with databases and microservices - CodePair supports it all. With automatic port detection, live reload, and instant preview links, see applications come to life as candidates code.

Terminal

candidate@interview:~/todo-app$ npm run dev

Full Terminal Experience

Complete Browser-Based Shell Access

Full terminal capabilities, enhanced. Candidates get comprehensive shell access directly in the browser, enabling commands, package management, build tools, and more—exactly as they'd experience in a local environment.

: Full bash/zsh terminal: Complete command-line interface with all standard utilities
: Package management: npm, pip, cargo, go mod, and other language-specific tools
: Build tools & CI/CD: Docker, Git, testing frameworks, and deployment tools
: Database access: Direct connection to PostgreSQL, Redis, and other services

Terminal

user@codepair~/project$

Intelligent Test Creation

Advanced AI Assessment Builder

Create realistic, sophisticated assessments effortlessly. Our enhanced AI-powered assessment builder generates comprehensive Nix environment configurations, relevant sample data, and varied scenarios to thoroughly evaluate candidates across different skill levels.

: Intelligent environment generation: AI creates flake.nix files, docker-compose.yml, and full stack configurations
: Realistic sample data: Auto-generated user profiles, database schemas, and API endpoints
: Varied skill levels: Assessments tailored for junior, senior, and lead developer roles
: Multi-technology support: Full-stack React+Node.js, Python+Django, Go+PostgreSQL, and more

AI Assessment Builder

Advanced Mode

Universal Development Environment

Every Language. Every Framework. Every Stack.

CodePair supports virtually every programming language and framework through our Nix-powered environment system. From traditional languages to cutting-edge frameworks, emerging technologies to enterprise stacks - if it runs on Linux, it runs in CodePair.

Popular Languages & Frameworks

And hundreds more supported through our Nix ecosystem

Programming Languages

JavaScript TypeScript Python Go Rust Java C#C++Swift Kotlin PHP Ruby Dart Scala Elixir Clojure Haskell R MATLAB Solidity

Frameworks & Technologies

React Vue.js Angular Svelte Next.js Nuxt.js Django FastAPI Spring Laravel Express Flutter Unity TensorFlow PyTorch

Infrastructure & Databases

Docker Kubernetes PostgreSQL MongoDB Redis GraphQL Nginx Elasticsearch

Need something else? Our Nix-powered environment system supports virtually any technology that runs on Linux. From emerging languages to legacy systems, if it exists, CodePair can run it.

Get Started in Minutes

Start Using CodePair Today

Ready to experience the future of collaborative coding? CodePair is designed for seamless setup and immediate productivity.

Start Free Trial View Pricing

Live coding sessions with real results.

IDE

AI

Terminal

Run

Git

Integrated Coding Assistant

AI Agent Built In

Seamless Team Coding Experience

Real-time Multi-Cursor Collaboration

Zero Configuration Required

Effortless Environment Setup

See Applications Come to Life

Full Application Builds & Instant Previews

Full Terminal Experience

Complete Browser-Based Shell Access

Intelligent Test Creation

Advanced AI Assessment Builder

Universal Development Environment

Every Language. Every Framework. Every Stack.

Get Started in Minutes

Start Using CodePair Today

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