News: Anthropic
AMD and Anthropic partnership: up to 2 GW of MI450 GPUs, July 22, 2026
The AMD and Anthropic partnership, announced July 22, 2026, covers up to 2 GW of Instinct MI450 Series GPUs.
Claude Opus 5.5 tops the Intelligence Index on September 22, 2026
On September 22, 2026, Artificial Analysis scored Claude Opus 5.5 at 58 on its Intelligence Index at max effort.
Claude Fable 5.1 and Mythos 5.1 release on September 1, 2026
Claude Fable 5.1 release: Anthropic shipped Fable 5.1 and Mythos 5.1, one model with two safeguard levels, on Sep 1.
Anthropic Claude Opus 5.5 release on September 22, 2026: what's new
Claude Opus 5.5 release: Anthropic shipped the model on September 22, 2026, at Fable 5.1 level on most work.
Anthropic Claude Sonnet 5.5 release on September 28, 2026: what's new
Claude Sonnet 5.5 release: Anthropic shipped the first Sonnet with cyber safeguards on September 28, 2026.