Everything is worked out in your browser. Your answers are never uploaded. Put two, three or four AI answers side by side, see exactly which words differ, and score them against your own criteria. It is free and private.
How to compare answers
- Choose how many answers to compare: Two, Three or Four.
- Paste each answer into its own box, or press Try an example.
- Under Compare against, pick the answer to use as the starting point.
- Read the differences. Added words are shown in green and, if you like, removed words are struck through.
- Press Add criterion to score each answer on things you care about, such as accuracy or tone, and set how much each counts.
- Press Download CSV to keep the results. Clear all starts again.
Why compare answers
Models, prompt changes and even repeated runs give different answers. Reading them next to each other, with the changed words marked, shows quickly whether a new prompt really helped, which model follows instructions better, or what a rerun changed.
How the differences are marked
Pick one answer to compare against. Every other answer is shown with the words it adds in green and, if you like, the words it leaves out struck through. Similarity is the share of words two answers have in common, in order.
Tips for fair comparisons
- Ask each model or version the exact same question.
- Decide your criteria before you read the answers, such as correctness, clarity, length and tone.
- Give heavier weight to the criteria that matter most for your job.
- Check facts yourself. Similar wording does not mean an answer is right.
- Repeat the test with a few different questions before choosing a favourite.
Who uses it
Students comparing study help, freelancers choosing a workflow for a client, and teams testing prompt changes. To check structured answers against a schema, use the AI answer schema check.
Questions
How accurate are the token counts?
They're estimates based on characters and words, usually within a tenth or so for English. For prices, use the AI cost estimator.
What does the CSV contain?
One row per criterion with its weight and each answer's score, then the weighted totals, word counts and estimated tokens. It opens in Excel, Google Sheets or Numbers.
Can I compare more than four answers?
Four side by side is the most that stays readable. For more, compare in rounds against the same first answer and keep the CSVs.
Is my text saved?
No. The answers stay in this tab only and are gone when you close it. Your choice of how many answers and the display options are remembered.