Claude Fable 5 Launches: Mythos-Class at 2x Opus
Jun 9, 2026 · 607 messages · 86 active members
Anthropic released Fable 5 mid-day via /model claude-fable-5 in Claude Code v2.1.169+, with a reported 91/100 senior engineer benchmark (Opus 4.8: 63, GPT-5.5: 62), 128k context, and 2x Opus pricing. Builders praised one…
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