Anthropic Claude Code

Claude Code is Anthropic's agentic coding tool, launched in 2026, that operates directly in your terminal. Unlike traditional code assistants that suggest completions, Claude Code acts as a full engineering agent. It can read and understand entire codebases, navigate file structures, write and edit across multiple files, run tests, handle git operations, and resolve complex bugs autonomously. It uses Claude 4 Opus under the hood for reasoning and supports extended thinking for complex architectural decisions. Claude Code integrates with VS Code, JetBrains IDEs, and works standalone in any terminal. It's particularly effective for large refactors, debugging production issues, and implementing features that span multiple files. The tool has quickly become a favorite among professional developers for its accuracy and codebase-level understanding.