Step-Video-T2V
Step-Video-T2V is a roughly 30B-parameter open (MIT) text-to-video model, the largest open video model when released.
StepFun's release preceded Wan 2.1 by 11 days; Wan's smaller 1.3B/14B sizes were easier to run.
- Date
- Friday, 14 February 2025
- Lab
- StepFun
- Kind
- model
- Access
- open weights
Hugging Face repo created 2025-02-14 (29.3B safetensors, MIT). The 'largest open video model' framing is from memory, not checked.
Sources
This record was checked against its sources on 6 October 2026. How we check