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Flux Kontext API

透過 RunAPI 使用 Flux Kontext API,包含 model skill、統一驗證與按用量計費。

runapi.ai
curl -X POST https://runapi.ai/api/v1/flux_kontext/text_to_image \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "flux-kontext-max",
  "prompt": "Edit this product photo: change the background to a tropical beach while keeping the product exactly the same."
}'
import { FluxKontextClient } from "@runapi.ai/flux-kontext";

const client = new FluxKontextClient();
const result = await client.textToImage.run({
    model: "flux-kontext-max",
    prompt: "Edit this product photo: change the background to a tropical beach while keeping the product exactly the same.",
});
<?php

require __DIR__ . "/vendor/autoload.php";

use RunApi\FluxKontext\FluxKontextClient;

$client = new FluxKontextClient();
$result = $client->textToImage->run([
        'model' => 'flux-kontext-max',
        'prompt' => 'Edit this product photo: change the background to a tropical beach while keeping the product exactly the same.',
]);
require "runapi/flux_kontext"

client = RunApi::FluxKontext::Client.new
result = client.text_to_image.run(
    model: "flux-kontext-max",
    prompt: "Edit this product photo: change the background to a tropical beach while keeping the product exactly the same."
)
npx skills add runapi-ai/flux-kontext -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 cursor
@runapi.ai/flux-kontext v1
OVERVIEW

關於 Flux Kontext

Flux Kontext is Black Forest Labs' in-context image editing model that applies targeted edits while preserving style, character identity, and scene composition. It excels at style transfer and maintaining visual consistency.

供應商
Black Forest Labs
模態
Image

比較所有 API 變體

變體 計費方式 定價
flux-kontext-max call $0.170 查看 →
flux-kontext-pro call $0.110 查看 →
PRICING

Flux Kontext 定價

Endpoint 解析度 時長 價格
text_to_image $0.17 / image

顯示 flux-kontext-max 的定價。其他變體保有各自的 endpoint 定價。

Agent 整合

透過 Agent 執行 Flux Kontext

運作方式

Flux Kontext 快速入門

  1. 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。

  2. 設定

    設定 RunAPI key,並在 coding workspace 安裝 model skill。

  3. 開發

    使用 skill 指引,在你的 app 內加入模型功能。

  4. 接收

    透過 task ID 查詢、在支援時串流,或處理 webhook callback。

CONTEXT

什麼是 Flux Kontext API?

Flux Kontext is Black Forest Labs' context-aware editing model, built on the 12B-parameter Flux architecture. Through RunAPI, both Kontext Pro and Max variants share a single key.

供應商
Black Forest Labs
查看全部 →
模態
Image
瀏覽模型 →

為什麼透過 RunAPI 使用 Flux Kontext API

一組驗證,全部供應商通用

一把 RunAPI 金鑰就能開通整個目錄。無需分開註冊帳戶,也不用為每個整合各自輪替金鑰。

統一價格與計費

以美元按次計費,每月結帳。失敗的生成不收費。

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 Kontext 常見問題

What is contextual editing?

Flux Kontext edits a specific region of an image while preserving the lighting, perspective, and style of the untouched areas.

What is the difference between Pro and Max?

Pro is the standard tier for most editing tasks. Max offers higher fidelity and is suited for complex multi-element edits.

What input formats are supported?

JPEG, PNG, and WebP. Keep input images under 10 MB for optimal performance.

Can I maintain character identity across edits?

Yes — Kontext is designed to preserve character consistency when editing backgrounds, clothing, or scene elements.

How fast is generation?

Typically 3–5 seconds per image, depending on complexity and variant.

我應該先從哪個版本開始?

先選擇符合你品質標準中最便宜的版本。大多數團隊會先用快速版本,之後再升級到專業版用於正式上線。

相似模型

如果你喜歡 Flux Kontext API,可以試試這些

開始用 Flux Kontext API 開發。