Prompt A/B Lab
Power users don't write better first drafts — they iterate. Put your original prompt and your revision side by side: same scoring as the Prompt Grader, plus a word-level diff so you can see exactly which changes earned the improvement.
Put two versions of the same prompt head to head. Same checks as the Prompt Grader.
0 tokens · 0 words
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0 tokens · 0 words
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What changed (A → B)
Checks measure structure, not magic — the real test is sending both to your AI and comparing the answers. This tool just makes the structural differences visible first.
Want the “why” behind this tool?
Tools build the reflex; the guide builds the understanding. They're better together.