See what changed between two versions — in plain language
The diff itself is computed by the program — the AI only explains the located changes and must cover every one. Each change shows the old and new text so you can verify the explanation.
How to use it
- Sign in, then paste version A and version B.
- Run the task (1 trial): every change is listed with an explanation.
- Compare each explanation against the quoted old/new lines before relying on it.
Limits & formats
Up to 15,000 characters per version; line-based comparison (like a code diff), so reflowed-paragraph text may show as several line changes. Explanations describe what changed — they do not judge legal validity, intent or quality. The program diff stays the source of truth.
Privacy
Both versions are sent through YYSI's server to our AI provider (DeepSeek) as the task input. YYSI stores hunk counts, token usage and the explanations. Results are kept for 24 hours, then become unavailable.
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