cto.new

cto.new is a completely free AI agent for planning, writing, and shipping code. It runs on leading models from Anthropic, OpenAI, and other providers, and is positioned as a “virtual CTO” for day-to-day engineering work—without requiring your own API keys or a linked credit card.

Built for everyday development

cto.new fits into a typical developer workflow and is designed to work alongside the tools you already use. You can hand it tasks, ask for a plan, and use it to improve existing code.

• Plan work and break down tasks
• Implement features based on tickets
• Review, edit, and refactor code
• Find and fix bugs

Frontier models, no setup overhead

The service uses modern frontier models, including Claude Sonnet 4.5, to generate working code and support architecture decisions. Billing, limits, and provider configuration are handled for you, so you can start immediately.

For solo developers and teams

cto.new can be used by individual developers as well as engineering teams in product companies when you need a fast, straightforward AI assistant for planning and coding with no hidden charges.