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AI CURATED HOT STORY · 11/4/2026

Leaked Anthropic Fable 5.5 Generates Animation via Pure Code in 2 Hours

1 reports archived1 independent sourcesupdated 11/4/2026, 23:14:03
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1 Sources Cross-Validated

Developers leaked early tests of Anthropic's unreleased flagship model, Claude Fable 5.5, which generated a full animation by running code autonomously for over two hours without external assets. This demonstration highlights the shift from code completion to long-horizon autonomous execution, though official confirmation and standardized benchmarks are still pending.

LATEST/Developers leaked early tests of Anthropic's unreleased flagship model, Claude Fable 5.5, which generated a full animation by running code autonomously for over two hours without external assets. This demonstration highlights the shift from code completion to long-horizon autonomous execution, though official confirmation and standardized benchmarks are still pending.

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2 fully observed hours
Fewer than 3 fully observed hours; trend not plotted yet.

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Total 1 reports · Latest first
  1. IT之家 · 智能时代T2·78 pts

    Leaked Anthropic Fable 5.5 Generates Animation via Pure Code in 2 Hours

    • Fable 5.5 independently produced a 66-second animation with audio using Python/HTML code, without image/video generation tools.
    • The model demonstrated ~2 hours 40 minutes of continuous autonomous execution, signaling a new paradigm for AI agents handling complex dynamic scenes.
    • Tests are informal community leaks lacking unified benchmarks; Anthropic has not confirmed release dates or performance metrics.