What is the difference between Google Flights and the ITA Matrix?

I’m retited. Hv no dog in this hunt. I used ITA Matrix professionally & personnaly for more than a decade. It was & still is superior because it catches without fail all airlines minus Southwest. Misses no detail on what flight is avail for you & always finds the rock bottom eheapest as well as allothers. Most helpful is it offers way more categories to include in your search than others do, so you spin your wheels less getting to what works for you.

Ex: If I can only depart after 3 PM, will not consider more than 1 stop or only a nonstop, and ned to get in by a certain time on my return flighht, all that and more is there to select on 1st inquiry so you don’t hv to wade through lists of flights that will not work for you. Way more effiscient.

Google Flights does not offer as many categoreis so a bit less helpful 5us comes in 2nd among air search engines, but since using the same software, finds all/more flights than other search engines and does it fast. They are both superior to others. My knowlegde is based on booking decades of travel as part of a job in Congress, many last second flights, many long complicated foreign trips, et al. Hope this helps you.