For a team choosing between CometAPI’s wan2.7 and viduq3 video routes, “16 seconds beats 15” is a poor default routing policy. It becomes useful only when that extra second is a hard requirement—and the exact route can deliver it with the controls the brief needs.
CometAPI’s August 23 comparison, fetched September 6, describes a shared asynchronous integration: submit to POST /v1/videos, receive a video ID, poll GET /v1/videos/{id}, then retrieve the completed MP4. It names wan2.7 and viduq3 and describes text-to-video and image-to-video support for both. That is a useful basis for a controlled comparison inside one CometAPI job workflow, not proof that every provider-side feature is exposed identically.
Treat duration as a constraint, not a score
The article reports 2–15 seconds for Wan 2.7 and up to 16 seconds for Vidu Q3, with Q3 limits dependent on route and variant. It also describes Wan’s broader continuation, reference and editing workflows, versus Q3’s emphasis on audiovisual storytelling. Those are model-family descriptions: verify the required control on the specific CometAPI route before making it an acceptance criterion.
A practical decision table for the CometAPI integration:
| Brief | Proposed routing rule |
|---|---|
| A single uninterrupted 16-second deliverable | Check whether the selected viduq3 route supports that duration and required inputs. A 15-second route cannot satisfy this brief as written. |
| A clip of 15 seconds or less | Compare both routes at the same supported duration and resolution; the maximum-length difference is irrelevant to that trial. |
| Existing footage must continue, or a subject must remain consistent | Confirm the necessary input/control is exposed first. Do not equate a shared create endpoint with equivalent continuation or editing support. |
Keep the comparison dataset small and inspectable
My recommendation is to version a prompt-and-reference set for the actual briefs, and run it through the same CometAPI create/poll/retrieve workflow. Keep prompt intent, input assets, duration and resolution matched wherever supported. Log the requested model ID and settings alongside each returned job ID; do not pool unlike settings into a single “winner” score.
Define acceptance before looking at outputs: required duration, subject continuity, prompt adherence and audio timing where relevant. Report accepted clips divided by attempted generations for each matched group, including failed generations in the denominator. Track retries and manual correction separately. This is a proposed evaluation method, not a measured acceptance-rate advantage for either model.
The source itself recommends a prompt/reference test set and cost per accepted clip rather than unit price alone. For this duration decision, compare actual generation spend per accepted clip at matched settings, with editing time reported separately. The article’s lower starting price for Q3 is not a like-for-like cost result, and its pricing tables explicitly distinguish CometAPI from direct-provider rates. Recheck current route pricing before budgeting; no live pricing or API test is established here.
Bottom line: use CometAPI’s common job lifecycle to hold the integration steady while testing route-specific output constraints. Let 16 seconds decide only when 16 seconds is genuinely required. Otherwise, choose from supported controls and measured acceptance on your own briefs—not the longest clip advertised for a model family.