For professionals · Students
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Decidi for students
Mark your own work like a tough examiner would.
Stress-test your work free 1,500 free credits · no sign-up, no card
Have your argument, your evidence and your facts challenged before you hand it in — so you learn where it’s weak from a tutor’s eye, not from a grade.
Why students use it
- Get a tough-examiner read on the essay: the weak argument, the unsupported claim, the missing counter-point.
- Fact-check the facts — independent models catch the confident wrong answer a single chatbot would hand you.
- Pressure-test the thesis: is it actually argued, or just asserted and hoped through?
- Surface the counter-argument you’d lose marks for ignoring.
- Stress-test the structure and the evidence so the marker can follow the logic.
- Use it to learn — the personas explain why something is weak, not just that it is.
Stress-test before you ship
- The thesis — argued or merely asserted?
- Every factual claim — right, and supported?
- The counter-argument you didn’t address
- Structure — does the logic actually flow?
- Evidence — does it prove what you say it proves?
- How a strict marker would grade it
Your council
Adversarial passes we run
Examiner-grade critiqueFact checkCounter-argument sweepThesis-strength testStructure & evidence review
Stress-test your work now
1,500 free credits · no sign-up, no card