Starting with bots is cool and all, but god damn are they slow. I don't want to adjust their base speed though because that causes the infinite tech to scale differently. I couldn't find a mod that does what this one does, so I wrote it myself. Enjoy!
This mod has settings for what level of how early the techs are, as well as a setting to make them cheaper (though default is already cheaper).
Early = Two red techs, two green techs, one blue tech, one yellow tech
Very Early = Three red techs, three green techs
Extremely Early = All red techs