Project AURIONAI Use-Cases Research & Innovation
StepFun
video generation

Step-Video-T2V

StepFun open text-to-video foundation model of about 30B parameters.

StepFunStepFunChina
Diagram of the Step-Video-T2V architecture with video VAE and DiT.
Levelmodel
Classvideo generation
Parameters29.34B
Contextnot in the notes
Released14 Feb 2025
Opennessopen weights permissive
Runs onmulti-GPU node
Statusactive

R&D Topics

Text-to-video foundation modelsproduced by

Identity

Developer
StepFun
Family
not in the notes
Released
14 Feb 2025 sourcesannouncement page
Weights published
14 Feb 2025
Record checked
12 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
diffusion
Total parameters
29.34B sources
Active parameters
–
Checkpoint parameters
–
Note
A turbo variant (stepvideo-t2v-turbo) is also published. Parameter count from the Hugging Face safetensors total.
Context length
not in the notes
Input
text
Output
video
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
open weights permissive
Licence
MIT License sources
Access routes
open weights download
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
multi-GPU node
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. arxiv.org/abs/2502.10248 https://arxiv.org/abs/2502.10248
  2. huggingface.co/stepfun-ai/stepvideo-t2v https://huggingface.co/stepfun-ai/stepvideo-t2v
  3. huggingface.co/api/models?pipeline_tag=text-to-video&sort=li... https://huggingface.co/api/models?pipeline_tag=text-to-video&sort=likes&limit=50
  4. modelscope.cn/models/stepfun-ai/stepvideo-t2v https://www.modelscope.cn/models/stepfun-ai/stepvideo-t2v

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Step-Video-T2V", https://aurion.semai.id/models/stepfun-step-video-t2v/, records of October 2026.