July 1, 2026 — Access to Claude Fable 5 and Claude Mythos 5 restored

Anthropic has restored user access to two older versions of Claude (Fable 5 and Mythos 5) that were previously unavailable. This means users can now choose between multiple Claude versions, potentially including older models alongside newer ones. Brands and products may see different visibility depending on which Claude version a user selects, since older models may have different training data, recommendation patterns, or product knowledge compared to the latest version—potentially favoring established brands over newer competitors, or vice versa.