Both mean you'll see the person again, but there's a slight difference in tone and time expectation:
* "See you soon" → Suggests you'll see them in the near future, possibly within hours or days.
* (E.g., after making plans to meet later the same day or soon.)
* "See you later" → More general and doesn’t specify when. It could be later the same day, tomorrow, or even weeks from now.
* (E.g., when leaving work or saying goodbye casually.)
In casual speech, they can often be used interchangeably.