There isn’t a single winner in all cases. Dynamic range varies a lot by film type and by digital sensor generation.

In general, modern digital cameras are often roughly on par with negative film for total dynamic range, and typically better than slide film. Where film often differs is highlight handling: film tends to roll off into saturation more gradually, so blown highlights can look less abrupt. Digital sensors respond more linearly and have a harder clipping point, which makes overexposed highlights easier to lose completely.

That said, comparisons can be misleading because the whole workflow matters. Scanning film can reduce the usable dynamic range seen in tests, and the final display or print medium may be the real limiting factor. For example, a screen, inkjet print, or darkroom paper may each reproduce different amounts of contrast, regardless of what the original capture held.

So the short version is: modern digital is generally very competitive with negative film and usually exceeds slide film, while film may still have an advantage in highlight roll-off and tolerance near overexposure.