OpenAI Codex vs Bolt.new
A detailed side-by-side comparison to help you choose the right AI coding agent for your needs.
Best for cloud-based autonomous coding agent
OpenAI Codex
OpenAI Codex is a cloud-based software engineering agent that runs in a sandboxed environment, capable of handling multiple coding tasks in parallel while you focus on other work. Unlike inline code c...
AI Models
GPT-5.3-CodexGPT-5.1-Codex-Minicodex-mini-latest
Key Features
- Autonomous cloud sandbox with full dev environment per task
- Parallel task execution—run multiple agents simultaneously
- GitHub integration with automatic PR creation
- Reads and writes files, runs tests, executes shell commands
- Verifiable diffs with complete action logs
Pricing
ChatGPT Pro — $200/month
ChatGPT Plus — $20/month
API — Usage-based pricing
Pros
- True autonomous agent that works independently in cloud sandbox
- Parallel task execution multiplies developer productivity
- Complete audit trail with verifiable diffs and action logs
Cons
- Best experience requires expensive ChatGPT Pro subscription
- Internet-disabled sandbox limits tasks needing external APIs
Best for instant full-stack app prototyping
Bolt.new
Bolt.new is an AI-powered app builder by StackBlitz that lets users create, run, and deploy full-stack web applications directly in the browser from natural language prompts. The platform uses WebCont...
AI Models
Claude Sonnet 4GPT-4oGemini 2.5 Pro
Key Features
- Full-stack app generation from natural language in browser
- WebContainers technology for instant Node.js environment
- Token-based system with monthly rollover on paid plans
- Built-in deployment with custom domain support
- Support for React, Next.js, Vue, Svelte, and more
Pricing
Free — $0/month
Pro — $25/month
Teams — $30/user/month
Enterprise — Custom pricing
Pros
- Fastest path from idea to deployed app with WebContainers
- Token rollover prevents waste on paid plans
- No local setup needed — everything runs in browser
Cons
- Free tier includes Bolt branding on deployed sites
- Token-based pricing can be unpredictable for complex projects