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Compare the real cost of going by car, train, bus, or plane

Osi analyzes each option for your route with costs broken down per person and door-to-door times, including transfers, and gives you a clear recommendation with the reasoning in numbers.

An example: Strasbourg to Interlaken, 10 days

“Is it better to rent a car or use trains from Strasbourg to Interlaken?”

OptionTotalNotes
A — Full car€1,351Rental + international one-way fee + fuel + Swiss vignette + parking
B — Trains only€242Cheap, less flexible in rural towns
C — Mixed (recommended)€703Car in Germany (Alsace + Black Forest) + train to Interlaken. Saves about €650 vs full car

Real analysis generated by Osi for a 10-day trip.

What Osi breaks down

What it does not do

Prices are approximate and may vary. The Plan does not book for you: Osi sends you to official sites and the provider always confirms the final price.

How to use it

Tell Osi the origin, destination, dates and how many people are traveling, on the web or on Telegram. The Free plan includes 10 messages a day; paid plans add unlimited messages and more advanced AI models.

Compare my route on the web

Compare on Telegram

Related guides

Frequently asked questions

Which options does Osi compare?

Rental car, train, bus and flight, with costs broken down per person and door-to-door times, including transfers.

Are the prices final?

No. They are approximate and may vary. The Plan does not book for you: check with the provider, who always confirms the final price.

Can I do this for free?

Yes, the Free plan includes 10 messages a day. Paid plans add unlimited messages and more advanced AI models for transport analysis and complex reasoning.