Pittsburgh: The humans won! The question now is how long can they hold off the computer?

The two-week long "Brains Vs. Artificial Intelligence" poker tournament at Rivers Casino in Pittburgh, US, closely watched around the world by poker and artificial intelligence enthusiasts, concluded on Friday.

Humans beat the machine, but how long till the computer improves?

Four of the world's top 10 poker players beat Claudico - the computer poker program designed over the last decade by a team of researchers at Carnegie Mellon University - by a combined $732,713 theoretical dollars or chips. (No real money was wagered.)

"It's definitely been a good run," said Bjorn Li, who finished with the biggest lead over Claudico, $529,033 ahead. That earned him $US44,676 ($56,313) from the $US100,000 prize pot that the casino and co-sponsor Microsoft put up for the players to divide. Doug Polk, the world's top-ranked online player, won $US26,734, Dong Kyu Kim won $US18,589, and Jason Les won $US10,000.