Based on 964 job postings seen since 1 Apr 2026 (627 open now; closed ones count for 12 months). Each posting speaks for its own role.
Sponsor registers
Licensed sponsor (UK)Listed on the Register of licensed sponsors: workers (UK Home Office) as “Anthropic Limited”: Worker (A rating). Register checked 4 Nov 2026.
Permit employer (IE)Listed on the Employment permits issued to companies (Department of Enterprise, Tourism and Employment) as “Anthropic Ireland Limited”: 3 permits (2025-2026). Register checked 4 Nov 2026.
H-1B sponsor: 239 approvals in FY2025–FY2026Listed on the H-1B Employer Data Hub (U.S. Citizenship and Immigration Services (USCIS)) as “ANTHROPIC PBC”: 239 approvals (FY2025-FY2026). Register checked 4 Nov 2026.
A register listing doesn't guarantee that a given job offers sponsorship — confirm with the employer. A $100,000 payment on new H-1B petitions for workers outside the US (2025 proclamation, extended to September 2027) is blocked by federal courts as of October 2026; check the current rules with the employer.