Sounds like he is ready for a bed! Or even just a matress on the floor least he won't hurt himself if he rolls out. My Nephew was in a bed at 12mths and coped well with the transition. My boy hasn't discovered he can climb out of the cot, although he will climb on to things to get on the couch or to reach the table, so I think we won't be far away from getting a bed.

Good Luck!