I did a google search for "free tier vps" and sure enough, it does seem like the standard is roughly $300 in credit (AWS seems to do it differently). Which is enough for a small vps-like-thing for 5 years, or 4 large instances for a few weeks.
"Free Tier: All Google Cloud customers can use select Google Cloud products—like Compute Engine, Cloud Storage, and BigQuery—free of charge, within specified monthly usage limits. When you stay within the Free Tier limits, these resources are not charged against your Free Trial credits or to your Cloud Billing account's payment method after your trial ends."
I actually use the GCP free tier to run a few small things, it works really well for me!
There is a small catch though, getting a static IP for the instance is not free, and your egress traffic starts costing after you reach 1GB outgoing data use in a months time.
The cool thing is (afaict), getting a static IP and going over 1GB egress doesn't totally knock you out of the free tier, you just pay for the static IP and any data usage past 1GB. My setup ends up costing me under a dollar per month with a static IP and very light egress usage.
The performance of the machine is not great but it's also not terrible consider the cost. I pretty sure you could run a small website and some other services on it no problem.
