Unreleased flagship Claude Fable 5.5 from Anthropic tested: 2 hours and 40 minutes of pure code generation produced a 66-second animation.
A developer reports that the unreleased Claude Fable 5.5 from Anthropic autonomously wrote and executed code for approximately 2 hours and 40 minutes. Without invoking image or video generation tools, it produced visuals, background music, and sound effects for a 66-second animation at 1920×804 resolution and 24fps, then packaged the result into a single HTML file.
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