Claude Code or Codex: choosing a workflow, not a brand

One task, two agents, and concrete differences in workflow, control, and output.

Useful when a large project must be understood quickly while preserving architectural context.

What works in practice

• Compare on the same repository and acceptance criteria.
• Measure time to a verified result, not tokens.
• Assess planning and final diff separately.
• The choice changes with the task.

Where the boundary is

There is no universal winner: each interface creates a different way of controlling the work.