A recent comprehensive evaluation of four AI-powered CLI coding tools—Claude Code, Codex, Gemini CLI, and OpenCode—has surfaced, based on 30 days of hands-on testing. The comparison covers key aspects such as code generation accuracy, speed, integration with existing workflows, and learning curve. For engineering teams and indie developers, choosing the right CLI tool can significantly impact productivity. The findings highlight that while each tool excels in specific areas, the best choice depends on the team's tech stack and project complexity. This analysis is particularly timely as AI-assisted development becomes mainstream, and developers seek reliable benchmarks to inform their decisions.
A comparative analysis of four major AI coding CLI tools based on 30 days of real-world testing, offering insights for developers evaluating tooling.