Wan 2.5 Preview is the latest iteration of the Wan series text-to-image models, delivering high-fidelity image generation from textual prompts. This release removes previous restrictions on image side length, enabling flexible and unrestricted pixel dimension choices within a defined pixel area. Wan 2.5 combines advanced AI architecture with enhanced pixel-level control to produce diverse and highly detailed visuals.
vs Stable Diffusion: Wan 2.5 is optimized for high-resolution images with fast inference and consistent quality at large sizes, while Stable Diffusion sometimes experiences quality degradation when scaling up.
vs DALL·E 3: Wan 2.5 Preview provides flexible dimension control enabling users to adapt output sizes freely, making it particularly advantageous for specialized design and print applications.
vs Midjourney: Wan 2.5 Preview is more versatile in dimension customization and supports both stylized and photorealistic outputs with rapid generation, appealing to users needing size flexibility without sacrificing detail.
vs Imagen: Wan 2.5 Preview surpasses Imagen by allowing free selection of image dimensions within pixel area limits, providing more adaptability for diverse use cases and print-ready results.
Measured on the AI/ML API gateway across live traffic. Figures are medians unless stated. Last updated 2026-10-12.
import requests r = requests.post( "https://api.aimlapi.com/v1/images/generations", headers={"Authorization": "Bearer " + AIMLAPI_KEY}, json={ "model": "alibaba/wan2.5-t2i-preview", "prompt": "A cat holding a sign that says hello" }, ) print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/images/generations", { method: "POST", headers: { Authorization: `Bearer ${process.env.AIMLAPI_KEY}`, "Content-Type": "application/json", }, body: JSON.stringify({ "model": "alibaba/wan2.5-t2i-preview", "prompt": "A cat holding a sign that says hello" }), }); console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/images/generations \ -H "Authorization: Bearer $AIMLAPI_KEY" \ -H "Content-Type: application/json" \ -d '{"model":"alibaba/wan2.5-t2i-preview","prompt":"A cat holding a sign that says hello"}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Output | |
| Benchmark | Score | What it measures | Source | Retrieved |
|---|---|---|---|---|
| Text-to-Image Arena | 961 | Human preference Elo from blind pairwise comparisons of generated images, measured independently by Artificial Analysis | Source | September 21, 2026 |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
Wan 2.5 Preview This page | Image generation at scale | |||
| Image generation at scale | ||||
| Image generation at scale | ||||
| Image generation at scale | ||||
| Image generation at scale |
Wan 2.5 Preview takes image, text as input and returns image.
Wan 2.5 Preview became available on November 13, 2025.
Wan 2.5 Preview is priced at $0.039 / gen.
Wan 2.5 Preview is billed per generation — a fixed charge per output rather than by prompt length.
Yes, Wan 2.5 Preview accepts image input as well as a text prompt.
Wan 2.5 Preview was built by Alibaba Cloud.
Send a request to https://api.aimlapi.com/v1/images/generations with alibaba/wan2.5-t2i-preview as the model id.
Yes. Wan 2.5 Preview is served through AI/ML API, so the same key and endpoint format used for other models applies.
