Lightricks视频性价比最高

LTX-2.5 图生视频 API

Name: LTX-2.5 API
Brand: Lightricks
SKU: lightricks/ltx-2.5
Availability: InStock

由 Lightricks 提供图生视频与 LTX-2.5。开放权重 1080p 视频，带声音——几秒渲染完成，每秒只需几美分。

lightricks/ltx-2.5/image-to-video

起价最高 −68%

$0.029/s$0.09

视频按秒计费 · 720p

使用 Max：起价 $0.028/s →运行正常100% 正常运行时间（30 天）中位数 8s

用 LTX-2.5 创作获取 API 密钥

API 文档 →对比模型 →

试用 LTX-2.5 图生视频

提示词*

0/5000

首帧*

作为开场画面的图像。支持 JPG/PNG/WebP，可使用 URL 或上传。

分辨率

1080p（1920×1080）或 720p（1280×720），横屏。

时长

生成视频片段时长（1–8 秒）。按秒计费。

生成音频

生成画面时同步配乐，只需在提示词中描述声音。无需额外收费。

Enable Safety Checker

Always on here. Set enable_safety_checker to false over the API to turn it off.

If set to true, the safety checker will be enabled. Content our Acceptable Use Policy prohibits stays blocked either way.

预计费用…

使用 Google 或电子邮箱免费创建账户，只为你生成的内容付费。

你的视频会显示在这里

输入提示词，选择设置，然后点击“运行”。仅成功生成的结果会收费。

还可查看：LTX-2.5 文生视频

查看 LTX-2.5 示例和提示词

LTX-2.5 图生视频 API

POST/api/v1/run/lightricks/ltx-2.5/image-to-video

提交异步任务并返回 202 和生成任务 ID。请轮询 GET /api/v1/generations/{id} 或传入 webhook_url。参见任务生命周期。

输入参数

名称	类型	说明	影响价格
`prompt`必填	string	描述镜头，包括主体、动作、镜头运动、光线和风格。	否
`image_url`必填	string (URL)	作为开场画面的图像。支持 JPG/PNG/WebP，可使用 URL 或上传。	否
`resolution`	string (enum)	1080p（1920×1080）或 720p（1280×720），横屏。可选值：720p · 1080p 默认值：1080p	是
`duration`	integer	生成视频片段时长（1–8 秒）。按秒计费。范围：1–8s 默认值：6	是
`generate_audio`	boolean	生成画面时同步配乐，只需在提示词中描述声音。无需额外收费。默认值：true	否
`seed`	integer	使用相同的 seed 和设置即可复现结果。留空则随机生成。	否
`enable_safety_checker`	boolean	If set to true, the safety checker will be enabled. Content our Acceptable Use Policy prohibits stays blocked either way. 默认值：true	否
`webhook_url`	string (URL)	可选。生成完成后，我们会在此地址 POST 结果，并使用你的 Webhook 密钥进行签名。Webhooks	否

请求

const API = "https://cheapergen.com/api/v1";
const headers = {
  Authorization: `Bearer ${process.env.CHEAPERGEN_API_KEY}`,
  "Content-Type": "application/json",
};

// 1. Submit the job
let job = await fetch(`${API}/run/lightricks/ltx-2.5/image-to-video`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "画面活了起来：镜头缓缓向前移动，灯光也随之变化",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "resolution": "1080p",
    "duration": 6
  }),
}).then((r) => r.json());

// 2. Poll until it finishes (or pass webhook_url and skip polling)
while (job.status === "queued" || job.status === "running") {
  await new Promise((r) => setTimeout(r, 3000));
  job = await fetch(`${API}/generations/${job.id}`, { headers }).then((r) => r.json());
}

console.log(job.status === "succeeded" ? job.output.video.url : job.error);

import os, time, requests

API = "https://cheapergen.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['CHEAPERGEN_API_KEY']}"}

# 1. Submit the job
job = requests.post(f"{API}/run/lightricks/ltx-2.5/image-to-video", headers=headers, json={
    "prompt": "画面活了起来：镜头缓缓向前移动，灯光也随之变化",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "resolution": "1080p",
    "duration": 6
}).json()

# 2. Poll until it finishes (or pass "webhook_url" and skip polling)
while job["status"] in ("queued", "running"):
    time.sleep(3)
    job = requests.get(f"{API}/generations/{job['id']}", headers=headers).json()

print(job["status"], job["output"]["video"]["url"] if job["status"] == "succeeded" else job["error"])

curl -X POST https://cheapergen.com/api/v1/run/lightricks/ltx-2.5/image-to-video \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "画面活了起来：镜头缓缓向前移动，灯光也随之变化",
  "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
  "resolution": "1080p",
  "duration": 6
}'

响应

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "lightricks/ltx-2.5",
  "endpoint": "lightricks/ltx-2.5/image-to-video",
  "mode": "image-to-video",
  "status": "queued",
  "input": {
    "prompt": "画面活了起来：镜头缓缓向前移动，灯光也随之变化",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "resolution": "1080p",
    "duration": 6
  },
  "output": null,
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": true,
    "official_usd": null,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": null
  },
  "source": "api",
  "started_at": null,
  "completed_at": null,
  "urls": {
    "get": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4",
    "cancel": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4/cancel"
  },
  "created_at": "2026-10-15T09:21:04Z"
}

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "lightricks/ltx-2.5",
  "endpoint": "lightricks/ltx-2.5/image-to-video",
  "mode": "image-to-video",
  "status": "succeeded",
  "input": {
    "prompt": "画面活了起来：镜头缓缓向前移动，灯光也随之变化",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "resolution": "1080p",
    "duration": 6
  },
  "output": {
    "video": {
      "url": "https://cdn.cheapergen.com/outputs/gen_8c2Q.mp4",
      "content_type": "video/mp4",
      "duration": 5,
      "width": 1280,
      "height": 720
    }
  },
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": false,
    "official_usd": 0.264,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": 0.0385
  },
  "source": "api",
  "created_at": "2026-10-15T09:21:04Z",
  "started_at": "2026-10-15T09:21:06Z",
  "completed_at": "2026-10-15T09:22:31Z"
}

LTX-2.5 定价

按视频按秒计费按量付费，无需订阅。生成失败会自动退款。

档位	官方价格	CheaperGen	可节省
720p 16:9 · 24 fps	~~$0.09~~/s	$0.0285/s 订阅月度套餐后： Pro $0.0279Max $0.0272	−68%
1080p 16:9 · 24 fps	~~$0.13~~/s	$0.057/s 订阅月度套餐后： Pro $0.0557Max $0.0544	−56%