The standard (at GOOG & others) is:
25% on year 1 2.08 & 1/3rd every month thereafter (75% vested equally over the next 36 months)
Furthermore, there are other grants that vest quarterly for the first 18 months of employment (in addition to the normal 4 year).
Look, I used to work at Amazon. They are the worst paying big company out there. Complete with totally shitty vesting plans. My first vesting with Amazon was over 5 years. Yup, they really took advantage of us new grads.