The O-1 is a nonimmigrant visa[1], but my understanding is that it's also one of the few nonimmigrant visas that USCIS allows for dual-intent consideration.
Eventually, you have to go through additional steps to convert to an immigrant visa (e.g. be sponsored by your (own) company, or marrying an American, etc.).
Eventually, you have to go through additional steps to convert to an immigrant visa (e.g. be sponsored by your (own) company, or marrying an American, etc.).
[1] https://www.uscis.gov/working-in-the-united-states/temporary...