O-1A vs H-1B: the differences that matter
Both are US work visas, but they work very differently. The H-1B depends on a lottery. The O-1A depends on your evidence.
Sai Veda
Approved for the O-1A twice. Updated October 2026.
At a glance
| Question | O-1A | H-1B |
|---|---|---|
| How you get it | Show evidence for at least 3 of 8 criteria | Employer registers you, and a lottery picks who can apply |
| Lottery | No | Yes, for most new applicants |
| Who files | A US employer or an agent | A US employer |
| First approval | Up to 3 years | Up to 3 years |
| Extensions | In increments of up to 1 year, with no fixed limit | Usually up to 6 years in total |
| Premium processing | Available | Available |
When the O-1A makes sense
If you weren't picked in the lottery, you're near the end of your H-1B time, or you want to work through your own company, the O-1A is worth a look. You need real evidence, so start building it early.
Switching from H-1B to O-1A
An employer or agent can file an O-1A while you're on H-1B. Many people make this switch. Your lawyer will help with timing so there's no gap in your status.
Questions
Is the O-1A harder to get than the H-1B?
It's different. The H-1B depends on luck in the lottery. The O-1A depends on evidence you can build on purpose.
Read the criterion guides
- How to meet the O-1A judging criterion
- How to meet the O-1A scholarly articles criterion
- How to meet the O-1A critical role criterion
This is what worked for me, not legal advice. Talk to an immigration lawyer about your case.
Sources
Official rules this guide is based on. Check them, and ask your lawyer, before you file.