Claude Mythos 5

Claude Fable 5 and Claude Mythos 5 - Anthropic

Claude Fable 5とClaude Mythos 5が出ましたよ、のリリースの文章を読んでいたらいきなりSlay the Spireの話が出てきて、見間違いかと思ったけど本当にSlay the Spireの話だった。Claude Opus 4.8よりClaude Fable 5の方がSlay the Spireがうまいらしい。わはは。

Memory and long-context. Fable 5 stays focused across millions of tokens in long-running tasks and improves its outputs using its own notes. When we had the model play the deck-building game Slay the Spire, giving it access to persistent file-based memory improved its performance three times more than for Opus 4.8; Fable also reached the game’s final act three times more often.