OpenAI shut down Sora's app in April 2026 and its API on September 24, after burning roughly $1 million a day against just $2.1 million in lifetime revenue. Three rivals split the market it left behind: ByteDance's Seedance 2.5 for physics-level realism, Runway's Gen-4.5 for multi-shot character consistency, and Luma's Ray 3.2 for HDR exports that drop straight into professional post-production.
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