リノベーション相談

# 🖼️ 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 banner (16:9) for renovation-coordinated furniture consultation service. Scene: a beautifully designed renovated Japanese home interior - newly polished wooden floors, white walls, brand new 匠大塚 sofa and dining set being arranged by a stylish female Japanese interior coordinator (40s) gesturing professionally to a young Japanese couple (30s) who are smiling and pointing at a fabric sample. A large floor plan blueprint visible on the dining table, fabric samples scattered. Natural daylight. Left-center text in modern sans-serif Japanese: "リフォームと家具を、" (dark navy). Below: "ひとつの提案で。" (larger). Subtext: "匠大塚 リフォーム連動 家具コーディネート相談" (smaller). Right-side: small "無料相談実施中" badge in red circle. Bottom: "ご予約は店頭・Webから" (small). Style: lifestyle editorial, professional, warm. No watermarks.
```