Anthropic denies UK AI Safety Institute pre-release access to new model

Anthropic refused pre-release access to Mythos 5.1 for the UK AI Security Institute, a first for a major model, drawing criticism given its ties to UK figures while CEO Dario Amodei calls for government oversight.

2026-09-21 ~ 2026-09-21 · 3 related posts

• Ex-UK PM advises Anthropic, but Britain still can't get model access — ccerrato147 · 2026-09-21
• Anthropic denies UK AI Security Institute pre-release access to Mythos 5.1, a first — ccerrato147 · 2026-09-21
• Report: Anthropic denied UK AI Security Institute pre-release access to 'Mythos 5.1', a first — ccerrato147 · 2026-09-21