Testing Fable AI: 46-Minute Autonomous Generation of Promo Video
lennysan · x · 2026-07-30
Lenny demonstrated the powerful capabilities of the AI video tool Fable by creating a product promo video. He gave it a single instruction: read the launch post and create a video.
Fable then ran completely autonomously for 46 minutes without asking any questions, finding all the product logos and generating the video. When asked to add background music, it even logged into the user's ElevenLabs account independently, generated the music, and mixed it in. This zero-intervention, long-chain autonomous operation showcases the immense potential of AI Agents in practical workflows.
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