Claude Code
Claude Code has no separate "AI node." The tool is itself an AI-powered coding agent, so the reasoning is built in. The model reads the codebase, plans the work, writes and runs code, and manages multi-step tasks through natural language in the terminal or the Claude Agent SDK.

For multi-agent work, it can now run parallel agents that split a problem and merge results, which is powerful for large refactoring or code generation jobs. The trade-off is that all of that coordination is code-first orchestration: You rely on Anthropic's solutions or express it in the SDK and your own scripts, not in a visual builder. Code-first orchestration is a strength when you're building software. But it works against you for operational workflows, because the logic sits in scripts only developers can read. Ops teams and non-engineers can't easily see what runs or step in when it breaks.
In day-to-day use, Claude Code lives in the CLI and inside your dev environment, where it can scaffold a module, add tests, run them, and fix what fails before you ever review a diff. That tight build-test-fix loop is its key characteristic, and it's why teams lean on it for AI coding work that would otherwise take hours of manual iteration.