You can have up to 15 bots and up to 16 players in multiplayer. 4 players in split screen. Bots count as players. Meaning, if you have 3 players in a game then you can only have 14 bots. Honestly, though, the bot games aren't worth playing because you can't play on Team Assault with bots. Only TDM and DM. Those lack the objective based factors that balance out the Mantel and Rebel sides, which is what they are balanced out for.
Communication error, by "nothing cool", I meant "Did you say bat mitzvah, how young are you, holy crap" ~Coco Monkay