Black Forest Labs图像

FLUX.2 [max] 文生图 API

Name: FLUX.2 [max] API
Brand: Black Forest Labs
SKU: bfl/flux-2-max
Availability: InStock

由 Black Forest Labs 提供文生图与 FLUX.2 [max]。适合主视觉图的高品质 FLUX.2。

bfl/flux-2-max/text-to-image

起价最高 −21%

$0.065/img$0.07

每张图像 · 1 MP

运行正常100% 正常运行时间（30 天）

用 FLUX.2 [max] 创作获取 API 密钥

API 文档 →对比模型 →

试用 FLUX.2 [max] 文生图

提示词*

0/5000

宽高比

输出图像比例。

分辨率

输出尺寸，单位为百万像素（1 MP ≈ 1024×1024）。FLUX.2 按百万像素计费。

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。

你的图像会显示在这里

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。

查看 FLUX.2 [max] 示例和提示词

FLUX.2 [max] 文生图 API

POST/api/v1/run/bfl/flux-2-max/text-to-image

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
`aspect_ratio`	string (enum)	输出图像比例。可选值：1:1 · 4:3 · 3:4 · 16:9 · 9:16 · 3:2 · 2:3 · 21:9 · 9:21 默认值：1:1	是
`resolution`	string (enum)	输出尺寸，单位为百万像素（1 MP ≈ 1024×1024）。FLUX.2 按百万像素计费。可选值：1MP · 2MP · 3MP · 4MP 默认值：1MP	是
`prompt_upsampling`	boolean	生成前让模型扩写并改写提示词。默认值：false	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
`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/bfl/flux-2-max/text-to-image`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "一张陶瓷花瓶与干花的编辑摄影，放在铺有亚麻布的桌面上，柔和的北向光，胶片颗粒感",
    "aspect_ratio": "1:1",
    "resolution": "1MP"
  }),
}).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.images[0].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/bfl/flux-2-max/text-to-image", headers=headers, json={
    "prompt": "一张陶瓷花瓶与干花的编辑摄影，放在铺有亚麻布的桌面上，柔和的北向光，胶片颗粒感",
    "aspect_ratio": "1:1",
    "resolution": "1MP"
}).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"]["images"][0]["url"] if job["status"] == "succeeded" else job["error"])

curl -X POST https://cheapergen.com/api/v1/run/bfl/flux-2-max/text-to-image \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "一张陶瓷花瓶与干花的编辑摄影，放在铺有亚麻布的桌面上，柔和的北向光，胶片颗粒感",
  "aspect_ratio": "1:1",
  "resolution": "1MP"
}'

响应

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bfl/flux-2-max",
  "endpoint": "bfl/flux-2-max/text-to-image",
  "mode": "text-to-image",
  "status": "queued",
  "input": {
    "prompt": "一张陶瓷花瓶与干花的编辑摄影，放在铺有亚麻布的桌面上，柔和的北向光，胶片颗粒感",
    "aspect_ratio": "1:1",
    "resolution": "1MP"
  },
  "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": "bfl/flux-2-max",
  "endpoint": "bfl/flux-2-max/text-to-image",
  "mode": "text-to-image",
  "status": "succeeded",
  "input": {
    "prompt": "一张陶瓷花瓶与干花的编辑摄影，放在铺有亚麻布的桌面上，柔和的北向光，胶片颗粒感",
    "aspect_ratio": "1:1",
    "resolution": "1MP"
  },
  "output": {
    "images": [
      {
        "url": "https://cdn.cheapergen.com/outputs/gen_8c2Q-0.png",
        "content_type": "image/png",
        "width": 2048,
        "height": 2048
      }
    ]
  },
  "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"
}

FLUX.2 [max] 定价

按每张图像按量付费，无需订阅。生成失败会自动退款。

档位	官方价格	CheaperGen	可节省
1 MP ≈1024×1024	~~$0.07~~/img	$0.0644/img	−8%
2 MP	~~$0.10~~/img	$0.0889/img 订阅月度套餐后： Pro $0.0877Max $0.0865	−11%
3 MP	~~$0.13~~/img	$0.1091/img 订阅月度套餐后： Pro $0.1059Max $0.1027	−16%
4 MP ≈2048×2048	~~$0.16~~/img	$0.1263/img 订阅月度套餐后： Pro $0.1214Max $0.1165	−21%