Codex vs v0: Side-by-Side Comparison 2026

Codex vs v0 comparison 2026. Side-by-side features, pricing & capabilities.

Feature Codex v0
Category AgentBuilder
Starting Price Free Free
Model Family GPT / CodexClaude
Context Window 400K200K (via Claude)
Code Completion ✓ ✗
Chat ✓ ✓
Inline Editing ✓ ✓
Agentic Mode ✓ ✓
Multi-File Editing ✓ ✓
Terminal Commands ✓ ✗
Browser Use ✗ ✗
Test Generation ✓ ✗
Debugging ✓ ✓
Refactoring ✓ ✓
Code Review ✓ ✗
PR Review ✓ ✗
Documentation ✓ ✗
Image to Code ✗ ✗
Voice Input ✗ ✗
App Generation ✓ ✓
Deployment ✗ ✗
Git Integration ✓ ✓
Supported IDEs Codex App, VS Code, CLIv0 (browser-based)
Open Source Yes (CLI)No

Pricing verified 2026-02-05. Codex pricing | v0 pricing

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Overview

Codex is ai agent from OpenAI. v0 is app builder from Vercel. Both tools are actively maintained as of 2026.

Codex: What You Get

Codex — AI Coding Agent from OpenAI. App / CLI / IDE.

  • Code completions
  • AI chat
  • Agentic mode
  • Multi-file editing
  • Terminal commands
  • Test generation
  • Debugging
  • Code review
  • Git integration
  • App generation

Pricing: Free / $8/mo. 6 plans available.

Models: GPT-5.3-Codex, Codex-mini-latest

v0: What You Get

Vercel's AI tool that generates React/Next.js UI components from text descriptions and screenshots, with shadcn/ui integration.

  • UI generation from text
  • Screenshot to code
  • shadcn/ui integration
  • React/Next.js output
  • Live preview

Pricing: Free / $20/mo. 4 plans available.

Models: Claude 3.5 Sonnet

Key Differences

  • Category: Codex is ai agent, v0 is app builder.
  • Model family: Codex uses GPT / Codex; v0 uses Claude.

Which Should You Choose?

Choose Codex if you want Codex handles multi-step tasks independently. Choose v0 if you want Best AI for generating React/Next.js UI components. Both tools are strong options — the right choice depends on your workflow and priorities.

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