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Decidi for students

Mark your own work like a tough examiner would.

Stress-test your work Chat free · 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
A worked example — the dissertation argument before the deadline

Say your dissertation is due in three weeks. The argument felt airtight in month two; now you cannot tell whether chapter three actually supports the conclusion or just sits near it, and your supervisor’s feedback window has closed.

The Strict Examiner reads the draft the way it will actually be marked: against the stated research question, checking whether each chapter earns its place in the chain from evidence to conclusion. The Data Skeptic audits how the sources are used — the secondary citation doing primary work, the study quoted beyond what it found — and the Steelman builds the counter-argument your conclusion must survive, because addressing the real objection is what separates upper grades from safe ones. The Ruthless Editor cuts the paragraphs written to reach a word count, and the Devil’s Advocate asks the viva question you are hoping nobody asks. You get a prioritised revision list sized to three weeks, not a fantasy rewrite.

Stress-test your work now

Chat free · no sign-up, no card