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

Access: API; Source: Access
Route release: Alibaba lists T2V Plus from January 9, 2025 and I2V Plus from January 20, 2025; no single date is assigned to the combined Plus model choice.; Source: Route release

Further details

API model IDs: T2V: `wan2.1-t2v-plus`; I2V: `wan2.1-i2v-plus`; first/last-frame route: `wan2.1-kf2v-plus`. These task-specific selectors are represented as one Plus model with multiple input modes.; Source: API model IDs
Output limits: The documented T2V/I2V Plus routes produce five seconds at 720p; video output is silent.; Source: Output limits
Regional API availability: The current legacy API documents the model route in International/Singapore and requires the workspace, endpoint, and API key to match.; Source: Regional API availability

Frequently asked questions about Wan 2.1 Plus API

How long can a video with Wan 2.1 Plus API be?

Up to 5 seconds in one go. Resolution: 720p.

According to Alibaba

Longest clip: 5s
Resolution: 720p
Audio: no

Sources and data date

Show all 9 sources

Type	Evidence and data date
Additional source	Alibaba (retrieved November 1, 2026) · Alibaba · Editorial description reviewed November 1, 2026
Additional source	Alibaba (retrieved November 1, 2026)1 2
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