Claude Opus is Anthropic's flagship intelligence tier inside the Claude family, positioned above Sonnet and Haiku. Covers Opus dot-releases through the 4.x generation (4.0, 4.1, 4.5, 4.6, 4.7, 4.8 and successors), capabilities, pricing, and the workflows Opus is the right choice for.
The Claude Opus 4.6 to 4.7 cycle ran from February 19 to April 1, 2026, a 41-day window that exemplifies the accelerated…
Claude Opus, Sonnet, and Haiku are the three tiers of Anthropic’s Claude model family, designed to serve different workload profiles at different…
The phrase "frontier model" shows up in AI policy documents, procurement contracts, vendor marketing, regulatory filings, and architecture proposals. It is used…
The June 12, 2026 suspension of Claude Fable 5 and Claude Mythos 5 is the first time a publicly-deployed frontier AI model…
Anthropic has disabled Claude Fable 5 and Claude Mythos 5 for all customers, complying with a US government export-control directive that arrived…
Update (2026-06-13): On June 12, 2026, Anthropic disabled Claude Fable 5 and Claude Mythos 5 for all customers after the US government…
Claude Opus 4.7 launched on April 16, 2026, and Claude Opus 4.8 launched on May 28, 2026, exactly 41 days later. That…
Claude Opus 4.8 is Anthropic’s latest frontier model, released on May 28, 2026 as an upgrade to Opus 4.7. It ships with…