Gemini CLI vs Claude Code: Which to Choose for Python Tasks – Real Python

A hands-on comparison of Gemini CLI and Claude Code for Python development tasks, covering setup, models, performance benchmarks, code quality, and pricing. Both tools are tested with the same CLI to-do app prompt run three times each. Gemini CLI offers a free tier and Google Cloud integration, while Claude Code (paid) generates code faster, produces more production-ready output with better modularity, type hints, and error handling. SWE-bench Verified scores show Gemini 3 Flash at 75.4% vs Claude Sonnet 4.6 at 75.2%, making them nearly tied on real-world engineering tasks. The choice comes down to budget constraints vs. code quality needs.