一個驗證，對應所有 provider
一組 RunAPI key 即可解鎖整個 catalog。無需分開帳戶，亦無需為每個整合輪換密鑰。
curl -X POST https://runapi.ai/api/v1/flux_2/remix_image \
-H "Authorization: Bearer $RUNAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "flux-2-max-text-to-image",
"prompt": "Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, fine detail."
}'import { Flux2Client } from "@runapi.ai/flux-2";
const client = new Flux2Client();
const result = await client.remixImage.run({
model: "flux-2-max-text-to-image",
prompt: "Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, fine detail.",
});<?php
require __DIR__ . "/vendor/autoload.php";
use RunApi\Flux2\Flux2Client;
$client = new Flux2Client();
$result = $client->remixImage->run([
'model' => 'flux-2-max-text-to-image',
'prompt' => 'Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, fine detail.',
]);require "runapi/flux_2"
client = RunApi::Flux2::Client.new
result = client.remix_image.run(
model: "flux-2-max-text-to-image",
prompt: "Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, fine detail."
)npx skills add runapi-ai/flux-2 -g# Claude Code
claude mcp add runapi -s user -- npx -y @runapi.ai/mcp
# Codex
codex plugin install runapi-mcp@agents
# Cursor / Windsurf / VS Code
npx @runapi.ai/mcp init cursorOVERVIEW
關於 Flux 2
Flux 2 is Black Forest Labs' text-to-image and image remix model known for strong prompt adherence and high visual fidelity. Its pro tier auto-enhances prompts, while the flex tier exposes manual control over inference steps and guidance.
供應商
Black Forest Labs
模式
Image
比較所有 API 變體
PRICING
Flux 2 定價
| Endpoint | 解析度 | 時長 | 價格 | |
|---|---|---|---|---|
| remix_image | 1k, 2k | — | $0.14-$0.24 / image |
以下為 flux-2-flex-remix-image 的定價。其他變體保留各自的 endpoint 定價。
Agent 整合
透過 Agent 執行 Flux 2
運作方式
開始使用 Flux 2
-
選擇模型
挑選符合輸出類型、品質門檻與延遲目標的模型與變體。
-
設定
設定 RunAPI key，並在 coding workspace 安裝 model skill。
-
開發
使用 skill 指引，在你的 app 內加入模型功能。
-
接收
透過 task ID 查詢、在支援時串流，或處理 webhook callback。
為何透過 RunAPI 使用 Flux 2 API
統一定價與計費
按次以 USD 收費，每月結算。失敗的生成不會收費。
內含 schema 的 skill
型別化 schema 與 setup 備註打包在 model skill 內，讓實作從正確契約開始。
Flux 2 常見問題
What is the difference between Pro and Flex?
Pro is the flagship tier with automatic prompt enhancement. Flex gives you control over inference steps and guidance, and supports up to 8 reference images.
How strong is prompt adherence?
Flux 2 is specifically known for strong prompt adherence — it follows detailed descriptions including spatial relationships, colors, and object counts more faithfully than most models.
Does Flux 2 support remix-image?
Yes — both Pro and Flex have dedicated remix-image variants that use source images as style or content seeds.
What is automatic prompt enhancement?
The Pro variant automatically refines your prompt for better visual results. This is a zero-config feature — no extra parameters needed.
How does Flux 2 compare to Flux Kontext?
Flux 2 is for generating new images from prompts or remixing source images. Flux Kontext is for editing existing images with contextual awareness.
我應該先用邊個版本？
先選最平而且符合你質素要求的版本。大多數團隊會先用快速版本，之後再升級到 pro 用於正式生產。
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