Watch a leading model answer confidently, slip up, and get caught — line by line. Real logged cases, replayed here.
The six cases replayed here are drawn from the baseline's errors — across the full 15-problem set it answered 7 correctly (47%).
Forty points is what checking your work is worth.
In-session learning, auditable step-by-step reasoning, byte-identical determinism, verified arithmetic, and the measured economics.
All demos