🔀 Prompt Diff

Compare two prompts side-by-side — token delta, cost difference, and text changes at a glance.

🔒 100% local Works offline 19 models No API key Char-level diff
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Select model for token counting & cost estimation

📝 Prompt A (before)
0 tokens
✏️ Prompt B (after)
0 tokens
Token delta
A → B
Cost delta (input)
per 1M calls
% change
token count
Char delta
A → B

📝 Prompt A (before)

Tokens0
Characters0
Words0
Lines0
Est. input cost$0.000000

✏️ Prompt B (after)

Tokens0
Characters0
Words0
Lines0
Est. input cost$0.000000

🔍 Text diff

Paste prompts above to see the diff

💰 Cost comparison — current model

Metric Prompt A Prompt B Delta Monthly Δ (1k calls)