Which tools do Claude, Codex and Cursor choose? We measured 17k runs to find out
Researchers ran 17,000 tests to compare the tool selection behavior of three AI coding assistants—Claude, Codex, and Cursor. They measured which programming tools each model picks when prompted, revealing distinct preferences and usage patterns. The study offers insight into how these assistants integrate external tools across multiple programming languages and development environments for both beginners and experts.