~Δ Prompt Diff

Paste two prompt versions and see exactly what changed. Word-level diff, token delta, and cost comparison.

Model (for cost estimates)

Prompt A

Prompt B

tokens A

tokens B

token delta

char delta

$0.0000

cost A

$0.0000

cost B

$0.0000

cost delta

Token estimates are approximate (~+/-15% vs real tokenizers). Costs are input-only estimates based on public API rates in USD per million tokens.