Claude Fable 5 ranks #1 in Code Arena: Frontend, leading by a wide margin over Opus-4.8.
Highlights:
- #1 in every sub leaderboard: HTML, React
- #1 in every sub category: Brand & Marketing, Reference-Based Design, Data & Analytics, Consumer Product, Gaming, Simulations, and Content Creation Tools.
Huge congrats to @AnthropicAI for this milestone! The thread breaks down how Claude Fable 5 ranks across single-modality arenas.
Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use.
Its capabilities exceed those of any model we’ve ever made generally available.