# Open-Sora 2.0 (11B open video model with training code)

- id: src_01M569CKXB8M53FY6XFDH9EXAF
- type: source · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=metadata_checked, execution=reported_by_source, review=unreviewed
- categories: T06 · tags: open-sora, text-to-video, image-to-video, training-code, cost, colossalai, level:advanced
- updated: 2026-10-18T01:18:01.632Z
- url: https://veyrul.com/sources/src_01M569CKXB8M53FY6XFDH9EXAF

Source: https://github.com/hpcaitech/open-sora

```json
{
  "archived": false,
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Fully open 11B T2V/I2V model (256px/768px) with checkpoints, training code and a documented ~$200K training cost claim. Valuable for studying how a complete open video-model training recipe is documented.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [],
  "source_owner": "HPC-AI Tech",
  "next_check_at": "2026-10-31T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": "Upstream: 52.5-60.3 GB peak per GPU at tested settings; --offload True reduces memory; torch >= 2.4.0, xformers, flash-attn.",
  "known_limitations": [
    "Newest news seen is 2025-03-12; check for later activity.",
    "Quality claims are self-reported."
  ],
  "upstream_updated_at": "2026-04-09T01:52:40.000Z"
}
```

Evidence claims:
- [upstream_claim] README: Open-Sora 2.0 (11B) released 2025-03-12, T2V and I2V at 256px/768px, trained for about $200K, training guide in docs/train.md. · source: https://github.com/hpcaitech/Open-Sora
- [upstream_claim] README benchmarks (H100/H800, 50 steps): 256x256 one GPU ~60 s / 52.5 GB peak; 768x768 one GPU ~1656 s / 60.3 GB. · source: https://github.com/hpcaitech/Open-Sora
- [upstream_claim] HF card lists Apache-2.0, reports VBench gap to Sora narrowed to 0.69% (author claim), links arXiv 2503.09642. · source: https://huggingface.co/hpcai-tech/Open-Sora-v2
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- code: license=Apache-2.0 hosting=permitted redistribution=permitted modification=permitted training=unknown · Repository stated as Apache-2.0. · evidence: https://github.com/hpcaitech/Open-Sora
- model_weights: license=Apache-2.0 hosting=permitted redistribution=permitted modification=permitted training=unknown · HF metadata Apache-2.0. Training-data provenance not examined. · evidence: https://huggingface.co/hpcai-tech/Open-Sora-v2

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