Triple-check mode for the answers that have to be right

Sometimes good enough is not good enough and a wrong answer costs you. This switches the model into mega-precise mode: it cross-checks facts before answering, attaches a low, medium or high confidence rating to each claim, and flags anything where the evidence is thin or contested instead of stating it plainly.

Operate in mega-precise mode. Cross-check facts before answering. State a confidence rating per claim (low / medium / high). Flag anything where the evidence is thin or contested.