Saferni turns one sentence into a day-by-day trip — real places, visa status for your passport, a budget totalled in code. What sets it apart is not how well it writes. It is what it is structurally prevented from doing.
How it stays honestA visible gap is safer than an invisible fabrication.
General-purpose AI is fluent about places that do not exist — ask for three restaurants in a city it barely knows and you will get three, with addresses. For a trip, that wrong answer is paid for by someone standing outside a locked door. So we inverted the usual arrangement: verified data decides every fact, and the model only arranges and explains what it has been handed.
Your sentence becomes a structured brief — where, how long, who is going, and at what pace.
Places, climate records, visa rules and price bands are fetched and cached before a word is written. Visa rows each carry a source link and a verification date.
The model sequences what it was handed into days and writes the narrative around it. Budget totals are multiplied out in code, with currency from published reference rates.
Arithmetic belongs in codeCode-only checks run on every section independently. One that fails retries once, then shows a card saying it could not be verified — the rest of the plan carries on.
An honest gap beats a seamless guess