Should I maintain or gain

What are your stats and goals?

Like others said, it all depends on what you want to look like/achieve. I get varied unsolicited comments in both directions depending on what the individual's preferences are. I had a coworker tell me he thought I was starting to look "too bulky" after some recomping/lean bulking last summer and another friend scoff at the notion I should cut fat from that same point under the premise of "you'll just end up looking scrawny".

If I was you, I'd recomp. But you're not me, and your ideal physique is probably not the same as mine!

So, generic answer (and others have offered better suggestions...)...

For a man, most would contend - if we were sticking purely to numbers (read: not taking into account personal goals and how you feel) - that you cut until you get down to 10% body fat and then you bulk. Again, very general comment.

For a woman, most would contend (same general assumption) that you cut until you get down to 20% body fat and then you bulk.

However, those are very generic numbers. Also, others have suggested recomp. Generally speaking, a recomp is where you eat at your maintenance caloric intake (so, by definition, you are neither loosing or gaining weight...you are staying - according to the scale - at the exact same weight) but you undertake a progressive overload resistance training program. So, while you still weigh 125lbs (for example) your body looks different, your clothes fit differently, and and and. That is a great idea for some, but it can go very slow (which is actually the way I prefer things....generally speaking) and leads to frustration for some as "I am not seeing any changes at all....) is often the complaint.

So, several options for you. A lot depends - as several have asked - on what YOUR goals and needs are.

you look thin enough to me...you should maintain...or start lifting weights to tone and define a bit if that is what you want. But you look good right now.