OpenAI's GPT-5.5 surpasses Anthropic's Mythos in a key evaluation. Google having the best AI model by June 2026 at 0.5% YES.

Anthropic's Claude Sonnet 5 and OpenAI's GPT-5.6 are both rumored for imminent release, setting up a critical head-to-head in the AI mid-tier model wars.

Access to Fable 5 and Mythos 5 barred for foreign nationals immediately following security evaluation