Read and Reproduce OpenSora

Key Insight

OpenSora is a fully open replica of OpenAI's Sora recipe — a DiT running over 3D VAE latents and trained with flow matching — and because its code, weights, and data pipeline are all public, it is the fastest way to see a complete Sora-style system end to end rather than from a paper's block diagram. Running inference on a pretrained checkpoint first builds intuition for what the model can and cannot do; then swapping out one component (for example, retraining with a different VAE) teaches which piece of the pipeline controls which failure mode. This is the project where the abstract architecture of Phase 6 becomes a concrete thing you can run, break, and fix.