What is the difference between H-1B and H-1B1?

H-1B:

• For specialty occupation workers
• Subject to annual cap (85,000)
• Available to all countries
• 6-year limit (extendable with I-140)

H-1B1 (for Singapore and Chile):

• Similar to H-1B but for citizens of Singapore and Chile only
• 6,800 visas reserved (1,400 for Chile, 5,400 for Singapore)
• Not subject to regular H-1B cap
• Similar requirements and benefits