In some states in the US, there's a subset of guilty plea called an Alford plea, which is basically, "I'm not admitting that I did anything wrong, and I maintain that I'm innocent, but I'm pleading guilty to get this over with, because the government has enough evidence to make a jury believe I'm guilty."

It's as shitty an option as it sounds. The whole system of plea bargaining as it stands is broken, IMO.