The new f-150s have up to 10,000 pounds of towing capacity.
Saw that 10k rating in the article. Depends on a few things. How well balanced the trailer is aka not too much tongue weight. What gear ratio the axle has. 5th wheel/gooseneck would be preferred. I’ve probably pulled 7,000 lbs(old sling wrecker on car trailer) with my 2001 F-150 5.4 liter but it was a dog going up hills and I could definitely feel the load back there. Trailer brakes are a must when the trailer outweighs the truck.
I’ve had 1/2, 3/4 and 1 tons, which are all misnomers since it’s the GVW/tow rating that matters, and there is a lot of difference. Personally, I don’t like going much over 5,000lbs with an F-150 - 1500.