Use when the user wants two (or three) Claude models to do the same thing side by side, for example "compare Opus and Haiku on a landing page", "race Sonnet against Haiku", "run this prompt on two models", "compare Opus 5.5 and Haiku 4.5 on the scroll race, use these pictures".
Install
npx skills add ZazaGdev/FocusShell --skill compare-modelsnpx skills add ZazaGdev/FocusShell --skill compare-models -a claude-code -gnpx skills add ZazaGdev/FocusShell --skill compare-models -a codex -ggemini skills install https://github.com/ZazaGdev/FocusShell.git --path manager/.claude/skills/compare-modelsgh skill install ZazaGdev/FocusShell compare-modelsgit clone --depth 1 https://github.com/ZazaGdev/FocusShell /tmp/ZazaGdev__FocusShell
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/ZazaGdev__FocusShell/manager/.claude/skills/compare-models ~/.claude/skills/compare-models # Claude Code
cp -R /tmp/ZazaGdev__FocusShell/manager/.claude/skills/compare-models ~/.agents/skills/compare-models # Codex, Cursor, Gemini CLI, Copilot, OpenCode