Parameters: 1.3B; Source: Parameters
Checkpoint: Official smaller T2V checkpoint `Wan-AI/Wan2.1-T2V-1.3B`, distinct from Wan 2.1 T2V 14B.; Source: Checkpoint

Input and output

Maximum resolution: 480p; Source: Maximum resolution
Maximum duration: 5 s; Source: Maximum duration

Watermarking and provenance

AI watermarking refers to invisible signals embedded in the output. Visible marks and provenance metadata are listed separately. Unknown means there is insufficient evidence for that particular field.

AI watermarking: Unknown; no source
Watermarking technique: Not known; no source

Licence and access

Weights: Open weights; Source: Weights
Access: Local; Source: Access
Release: Wan-Video dates the initial model-weight release to February 25, 2025.; Source: Release

Further details

Input mode: Text-to-video.; Source: Input mode
Documented output: The checkpoint is documented for 480p; published inference examples are five seconds long. The 14B checkpoint's higher 720p output is not attributed to 1.3B.; Source: Documented output
Weights license: The Wan 2.1 repository lists Apache 2.0 for its released checkpoints.; Source: Weights license

Frequently asked questions about Wan 2.1 T2V 1.3B

How long can a video with Wan 2.1 T2V 1.3B be?

Up to 5 seconds in one go. Resolution: 480p.

According to Alibaba

Longest clip: 5s
Resolution: 480p
Open weights: yes

Sources and data date

Type	Evidence and data date
Additional source	Alibaba (retrieved November 1, 2026)
Additional source	Alibaba (retrieved November 1, 2026) · Alibaba · Editorial description reviewed November 1, 2026
Additional source	OpenRouter: Popularity index (derived), CC BY 4.0
Additional source	Vercel AI Gateway: Popularity index (derived), CC BY 4.0
Additional source	Ollama: cumulative downloads for the popularity index
Additional source	Replicate: cumulative runs for the popularity index
Additional source	Google Trending Now: limited feed selection for Germany and the US
Additional source	Creative Commons Attribution 4.0