新学期 学習机

# 🖼️ GPT-image-2 (OpenAI API) — 画像生成 使い方ガイド

## TOOL
**GPT-image-2** (OpenAI API)

## エンドポイント / モデル
- `POST https://api.openai.com/v1/images/generations`
- `model: "gpt-image-2"`
- 認証: OpenAI API キー (`Authorization: Bearer ...`)

## 主要パラメータ

| パラメータ | 値の例 |
|---|---|
| `size` | `"1024x1024"` (正方形 / SNS) / `"1024x1536"` (3:4 縦長 / マイソク) / `"1536x1024"` (16:9 / LP ヒーロー) |
| `quality` | `"medium"` (LP・チラシ標準) / `"high"` (印刷品質) |
| `response_format` | `"b64_json"` を推奨 (取得後に WebP/PNG に変換) |
| `n` | 通常 1 |

## 料金 (参考)
- `medium` 1024x1024 ≈ $0.053/枚
- `medium` 1024x1536 ≈ $0.080/枚

## 実投入するプロンプト本文

```text
A horizontal LP hero (16:9) advertisement for new school year study desk promotion. Scene: a bright child's room with a premium 匠大塚 solid wood study desk near a window, an ergonomic chair, a desk lamp turned on, a young Japanese elementary school student (6-7 years old) sitting and writing in a notebook with a happy expression, sunny morning light, bookshelf with school books, a small potted plant. Bright, optimistic atmosphere. Left-side text in friendly rounded Japanese font: "学びの基地を、" (deep navy). Below: "本物の家具で。" (larger, same font). Bottom-left: "匠大塚 新生活応援フェア 開催中" (smaller). Right side: small infographic-style "10年使える品質保証" badge (gold circle, small text). Style: warm, encouraging, educational. No watermarks.
```