Rumor: Anthropic Has Completed Training of the New Mythos, Sonnet 5 May Be Released This Week
2026-06-22 03:16
Odaily Planet Daily News: According to AI observer Andrew Curran, Anthropic has completed training of the new and more powerful Mythos model. However, it remains unclear whether the model will be named Mythos 5.1 or Mythos 6; it is also possible that it is solely for internal R&D to accelerate subsequent model development.
Additionally, as the model identifier "claude-sonnet-5" has appeared on the Anthropic partner service platform, the developer community widely speculates that Claude Sonnet 5 may be officially released this week.
