Claude Code: The AI Pair Programmer Changing How Developers Work in 2026

What is Claude Code?

Claude Code is Anthropic's command-line AI coding agent built on the Claude Sonnet 4.5 model family. Unlike traditional chat-based assistants, it runs in your terminal, reads your codebase, and can edit files, run tests, and execute git workflows on your behalf.

Key Features

Agentic workflows — multi-step tasks like refactors, migrations, and bug fixes from a single prompt.

Full repo context — understands your entire project, not just the open file.

Terminal-native — pairs with your existing tooling (vim, tmux, CI scripts).

Safe by default — asks before destructive operations.

Getting Started

Install with npm install -g @anthropic-ai/claude-code, then run claude in any project directory. Authenticate with your Anthropic account and start describing what you want built.

Real-World Use Cases

Teams at IT Support in Tokyo use Claude Code for legacy code migrations, writing test suites, and turning Figma designs into production React components — cutting development time by 40-60%.

Should You Adopt It?

If you ship code daily, yes. The learning curve is minutes, not weeks, and it complements (rather than replaces) your IDE.