Wan 2.5 文本转视频·极速模式

About Wan 2.5 Text to Video Fast

Wan 2.5 text to video fast is a second text-to-video route for the same Alibaba model. It keeps the prompt, negative prompt, expansion switch, seed and optional audio track, drops the 480p tier, and prices each five seconds below the standard page at the two sizes it does support. The form opens at 1280×720 for five seconds, a 460-credit run.

The frame list is shorter: 1280×720 or 720×1280, and 1920×1080 or 1080×1920. There is no 480p option and no square option, so the smallest frame here is already HD. Five seconds cost 460 credits at 720p and 690 at 1080p, with a ten-second clip costing double; the estimate above the generate button updates with the frame and the length, before the request leaves the page. Set beside the standard page, that is 180 credits less per five seconds at 720p and 270 less at 1080p.

The rest of the control set is the same. The prompt is cut at 2,000 characters on the server, the optional negative prompt takes the same limit, and prompt expansion sits off by default and adds cinematic detail to the prompt when switched on. The seed starts at -1; a fixed integer with an unchanged prompt and frame is what makes a clip repeatable, and the helper beside the field frames a seed as a way to keep pacing consistent between versions. Audio is optional and accepts MP3, WAV, OGG or M4A files up to 40 MB, with the panel describing it as a reference for motion and lip-sync.

Wan 2.5 text to video fast is a separate endpoint, not a speed setting on the standard model, so treat the two as different renders and compare them on your own prompt before committing a series to one. What the route does state is its own time estimate: 220 seconds at 720p and 280 at 1080p, against 380 and 440 on the standard page, shown as a countdown after submission. The countdown is a budget, not a deadline; the panel keeps working while the file is packaged. If the deliverable has to be 720p or 1080p anyway, this route is both cheaper and quicker. If you want a 320-credit 480p draft first, the standard page is the only one that offers it. The response also carries the provider's task id, and the page can show the raw JSON for the last run if you need to check what was sent.

How Wan 2.5 Text to Video Fast works

1. 1

   Pick 720p or 1080p

   Four frames: 1280×720 and 1920×1080 landscape, 720×1280 and 1080×1920 portrait. The 480p pair on the standard page is not on this list, so the low-end draft has to happen elsewhere.

2. 2

   Write the prompt and controls

   Stay inside 2,000 characters, name artifacts to avoid in the negative prompt, leave expansion off unless you want the prompt rewritten, and enter a fixed seed if the shot has to be repeatable. Audio is optional, capped at 40 MB and used as a timing reference.

3. 3

   Choose 5 or 10 seconds and run

   Five seconds cost 460 credits at 720p and 690 at 1080p; ten seconds doubles it. Confirm the estimate, submit, then download the MP4 when the countdown ends and the file is ready.

What Wan 2.5 Text to Video Fast is best for

• HD social clips

  720p in portrait is the cheapest frame on this route, which makes it the practical default for a feed that never shows more than 720p anyway. Five seconds is 460 credits, ten is 920.

• Product teasers at 1080p

  A five-second 1080p clip costs 690 credits, and the prompt can be re-run with a fixed seed when a client asks for a variation on the same product and lighting.

• Prompt testing

  The endpoint's own estimate is shorter than the standard page at both sizes, so a session that tries several prompts in a row spends less time waiting between results.

• Voiceover cuts

  Upload narration with the prompt and the model gets a timing reference for motion and lip-sync, through the same optional audio field the standard page exposes.

Wan 2.5 Text to Video Fast at a glance

Model

Alibaba Wan 2.5 text to video fast, run through WaveSpeed

Frames

1280×720, 720×1280, 1920×1080, 1080×1920; no 480p, no square

Duration

5 or 10 seconds

Credit cost

460 per 5 seconds at 720p, 690 at 1080p; 10 seconds doubles

Controls

Prompt and negative prompt up to 2,000 characters, prompt expansion, seed, optional audio up to 40 MB

Output

MP4, downloaded from the preview panel

Wan 2.5 Text to Video Fast FAQ

Is Fast cheaper than the standard Wan 2.5 page?

Per five seconds, yes at both sizes it supports: 460 against 640 at 720p, and 690 against 960 at 1080p. It is not cheaper at the bottom of the range, because there is no 480p frame here and the standard page charges 320 credits for one. A ten-second run doubles the Fast figures to 920 and 1,380.

Does it render faster?

The route's own estimate is shorter at both sizes: 220 seconds at 720p against 380 on the standard page, and 280 against 440 at 1080p. The figure is an estimate, shown as a countdown after submission, not a guarantee, and it does not change the credit charge.

Can I make a square or 480p clip?

No. This page offers four frames, two landscape and two portrait, at 720p and 1080p. A square or 480p clip has to come from the standard Wan 2.5 text-to-video page, or from cropping the finished video in an editor.

What happens when a run fails?

The charge is refunded when the provider returns no video. The exact cost appears above the generate button before anything is sent. New accounts get 300 credits at signup and 50 more per daily login, both expiring after 30 days; Starter is $4.90 a month for 300 credits, which does not cover a 720p run on its own.