There are 13 levels of upgrades for the Robot

Multiplier at max level: x8192


Upgrade Cost
Extra Arms 35,000,000
Smoth Gears 350,000,000
Extreme Speed 3,500,000,000
Genius A.I. 35,000,000,000
Hyper Speed 350,000,000,000
Quick Motors 3,500,000,000,000
Rust Free Metal V1 35,000,000,000,000
Rust Free Metal V2 700,000,000,000,000
Rust Free Metal V3 14,000,000,000,000,000
Rust Free Metal V4 280,000,000,000,000,000
Rust Free Metal V5 5,600,000,000,000,000,000
Rust Free Metal V6 112,000,000,000,000,000,000
Rust Free Metal V7 2,240,600,000,000,000,000,000