30秒動画、50以上の参照素材に対応。 今すぐ試す
GPT Image 2.5

ChatGPT Image 2.5 AI 画像生成ツール

OpenAI が 2026 年 9 月 8 日に公開した GPT Image 2.5 は、テキストや参照画像から商品写真、ポスター、ポートレートを作成できます。背景、文字、細部を調整し、変更する箇所と残す箇所をより細かく指定できます。

Flare と Sunburst は medium/high/xhigh/max 品質、1K/2K/4K プリセット、PNG/JPEG/WebP 出力に対応しています。実際のサイズは選択したプリセットと異なる場合があります。

シンプルな人物スケッチをピンクの髪のイラストキャラクターに変換

GPT Image 2.5 と GPT Image 2:何が変わった?

GPT Image 2.5 は、より自然な細部、参照画像との高い一致度、優れた編集制御を実現します。Flare は生成時間を短縮し、Sunburst はさらに精密な編集に重点を置いています。

項目GPT Image 2GPT Image 2.5
公開日2026 年 4 月 21 日2026 年 9 月 8 日
画像の細部写実的な画像生成より自然な光と細やかな質感
参照画像参照画像を使って生成結果を誘導顔や商品などの被写体らしさをより維持
部分的な編集テキスト指示による変更に対応より正確に変更し、ほかの部分への意図しない影響を抑制
編集を重ねた際の一貫性追加の編集に対応以前の変更や細部をより維持
生成速度OpenAI の比較基準Flare:OpenAI によると遅延が 50% 減少
Arena テキストから画像の順位3 位 · スコア:1381Sunburst 1 位 · 1421、Flare 2 位 · 1399
Arena 単一画像編集の順位3 位 · スコア:1461Sunburst 1 位 · 1520、Flare 2 位 · 1491

順位は Arena の 2026 年 9 月 7 日時点のランキングを基に、9 月 9 日に確認したものです。GPT Image 2.5 の結果は Preliminary(暫定)で、投票の増加により変動する場合があります。GPT Image 2 の項目は medium 品質です。速度に関する説明は Flare のみに適用され、Sunburst は対象外です。

ChatGPT Image 2.5 の主な機能

プロンプト、スケッチ、参照画像から始めて完成したビジュアルを作成。画像全体を作り直さずに細部を調整できます。

スケッチを完成画像に変換
01

スケッチを完成画像に変換

ラフな絵を商品写真、インテリアデザイン、3D 風のシーンに変換します。スケッチをアップロードして希望する見た目を説明してください。絵で配置や比率を示し、GPT Image 2.5 が色、光、質感を加えます。

画像フレーム
画像フレーム
アニメーション GIF
アニメーション GIF
02

GIF やストップモーション用のフレームを作成

ポーズ、表情、物の位置を少しずつ変えた画像を作り、別の編集ツールでループ GIF やストップモーション風アニメーションにまとめます。共通の参照画像を使うと、キャラクターや設定の一貫性を保ちやすくなります。

最初から作り直さずに画像を編集
03

最初から作り直さずに画像を編集

背景の差し替え、商品の色の変更、ポスターの文字の更新が可能です。変更する箇所と残す箇所を説明してください。GPT Image 2.5 はより精密な編集で、被写体、レイアウト、周囲の細部を保ちやすくします。

参照画像の被写体らしさを維持
04

参照画像の被写体らしさを維持

同じ商品を異なる場面に置いたり、ポートレートの新しいスタイルを試したりできます。参照画像で結果を誘導し、元の特徴に近づけることで、統一感のある商品写真やキャラクター画像を作れます。

文字とレイアウトを含むポスターを作成
05

文字とレイアウトを含むポスターを作成

文字を画像に組み込んだイベントポスター、招待状、SNS 向けビジュアルをデザインできます。正確な文言、配置、目立たせる要素を指定し、公開前に綴りや小さな文字を確認してください。

自然な細部を持つ画像を作成
06

自然な細部を持つ画像を作成

自然な肌の質感、布地の細部、リアルな商品の反射を生成できます。素材、光源、場所を説明し、柔らかな照明のスタジオ写真から屋外シーンまで、希望する結果に近づけましょう。

GPT Image 2.5 のサンプルとプロンプト

GPT Image 2.5 サンプル 1

An expedition team in weathered EVA suits discovering cyclopean alien architecture half-buried in blue ice on a distant moon, a colossal stone face staring from a cliff, aurora lights dancing overhead, frost crystals catching the light of a distant binary star, footprints in untouched snow, sense of ancient dread, cold blue-cyan palette with warm suit lights, National Geographic meets Alien, cinematic documentary still.

GPT Image 2.5 サンプル 2

Turn the reference sketch into a photorealistic autumn portrait, preserving its pose and composition. A young adult woman with long brown hair sits on a wooden swing, holding both ropes and smiling gently. She wears a cream knit sweater, burgundy plaid scarf, and blue jeans. Shoot from a close, slightly low angle beneath orange-red maple leaves, with a rustic fence and wooded hills behind her. Soft daylight, natural skin and fabric texture, windblown hair, subtle film grain. 16:9 landscape, finished photo only, no sketch or text.

GPT Image 2.5 サンプル 3

A whimsical cinematic 3D illustration of frightened, dirty fruits and vegetables on a wooden kitchen counter. A large red apple stands in the center, surrounded by a tomato, lettuce, carrot, and broccoli, all with expressive eyes and worried faces. Soil, caterpillars, flies, and a snail cover their surfaces. A hand holds a magnifying glass in the foreground, revealing colorful cartoon microbes on the apple’s skin. Warm sunlight, a cozy rustic kitchen, detailed textures, shallow depth of field, playful educational advertising style. Background signs read "FRUTAS Y VERDURAS MÁS LIMPIAS = UNA FAMILIA MÁS SANA" and "LO QUE NO VES TAMBIÉN IMPORTA." Landscape composition.

GPT Image 2.5 サンプル 4

A candid full-body photo of a young adult woman at an outdoor flower market, holding a bouquet wrapped in brown paper. White camisole, loose light-blue jeans, ivory shoulder bag, tousled brown hair, looking down with a gentle smile. Colorful flower stalls, soft daylight, natural skin texture, subtle film grain.

GPT Image 2.5 サンプル 5

Find exactly 100 distinct, real, drawable physical things whose established English names start with X. Include varied objects, organisms, foods, materials, and artifacts. Exclude invented names, "Xmas," abstract terms, symbols, software, duplicates, synonyms, trivial variants, and generic objects padded with X-word modifiers. Allow established compounds, common object abbreviations such as "XLR connector," accepted loanwords, and accurately drawable scientific terms. Verify obscure terms and avoid misleading names or illustrations. For each entry, provide: number, exact name, category, brief definition, visual description, and High/Medium confidence. Check every entry twice for validity, tangibility, visual distinctness, accurate depiction, and suitability for a children’s educational chart. Exclude borderline entries where possible; identify any retained ones. Add a "Rejected candidates" section with brief reasons. Prioritize accuracy over quantity. If fewer than 100 qualify, state this and provide the best verified set without inventing fillers. Only after validating 100 entries, create a 10 × 10 picture grid. Each cell must show exactly one approved item, its number, and its unchanged name. Use a white background, consistent illustrations, clear cell divisions, large readable labels, and no decorative objects. Depictions must match the validated definitions precisely.

GPT Image 2.5 サンプル 6

Photorealistic Paris street portrait, vertical 9:16. A young Southeast Asian hijabi woman walks forward, turning back toward the camera with a calm, curious expression. She wears a flowing taupe hijab, oversized emerald blazer, beige tulle maxi skirt, and brown leather shoulder bag, carrying blush roses wrapped in kraft paper. The Eiffel Tower is recognizable in the upper-right background. Slow-shutter panning creates horizontal background blur while her face stays relatively sharp. Wind moves her hijab and skirt. Slight Dutch angle, 50mm perspective, soft afternoon backlight, muted natural colors, creamy highlights, and subtle film grain. Romantic, candid, and realistic. No aged-photo effects, heavy grain, orange grading, plastic skin, CGI, text, or watermark.

GPT Image 2.5 サンプル 7

Photorealistic travel portrait of a young East Asian woman on a sandy shore beside moss-covered rocks, with a grand medieval stone abbey rising on a rocky island behind her. Long dark brown hair, gentle smile, looking at the camera. She wears an oversized black coat with hands in pockets, a cream scarf, and a subtle chain shoulder bag. Soft evening light, pale blue sky, detailed stone architecture, natural skin and fabric textures, candid smartphone-photo feel.

GPT Image 2.5 サンプル 8

Makoto Shinkai-style anime illustration of a boy with a backpack skateboarding down a steep coastal street, viewed from behind. A sparkling turquoise ocean and crescent beach on the left, a detailed seaside town on the right, towering white clouds in a brilliant blue sky. Vivid summer colors, cinematic sunlight, nostalgic atmosphere.

GPT Image 2.5 サンプル 9

Create a charming handcrafted miniature travel scene featuring [ICONIC STRUCTURE] as the main focal point. Show the landmark as a beautifully sculpted tiny 3D model, with soft rounded details, handmade textures, delicate imperfections, and a whimsical storybook feeling. Surround it with a few subtle elements that represent its location—such as tiny trees, flowers, streets, boats, mountains, clouds, or local objects—without making the scene crowded. Place everything on a clean warm-white textured paper background, with plenty of elegant negative space. Add a small tasteful wooden or paper travel plaque containing: [STRUCTURE NAME] [CITY, COUNTRY] Famous for: [SHORT UNIQUE FACT] Use soft natural lighting, gentle shadows, pastel yet realistic colors, miniature diorama depth, handcrafted clay/paper textures, and a premium cute travel-journal aesthetic. Centered composition, highly detailed landmark, adorable but sophisticated, clean and collectible travel-card design, no photorealistic people, no clutter.

GPT Image 2.5 サンプル 10

A candid fashion portrait of a young man with tousled dark hair sitting among empty blue velvet theater seats. Brown suede jacket, cream shirt, loose burgundy tie, ivory wide-leg trousers, and dark leather boots. Holding a small silver camera, looking off-camera. Direct flash, natural textures, subtle film grain, vintage editorial style. Landscape, approximately 5:4.

GPT Image 2.5 サンプル 11

Create image of Magazine feature article [travel] guide page, cute, information dense photo book style magazine feature article page. Add all necessary sections, tips, recommendations, information. add photos for any sections and recommendations if you like. Place the attached person at the precise location of [Plateau of Gorgoroth in Mordor]. Seamlessly blend the attached person as if they are sightseeing. Approach this task with the understanding that this is a critical, information rich page that will significantly influence visitor numbers, text accuracy is important.

GPT Image 2.5 サンプル 12

A minimalist illustrated poster inspired by Léon: The Professional. A tall man in sunglasses and a long black coat holds a suppressed pistol upright beside a young girl with a short black bob, an oversized green jacket, shorts, and black boots. She holds a potted plant; a suitcase rests between them. Huge red "LEON" lettering fills the upper background, with a simplified gray city skyline below. Angular geometric shapes, elongated proportions, dramatic shadows, subtle paper texture, and a restrained red, black, cream, and green palette.

GPT Image 2.5 サンプル 13

Transform my photo into an authentic 1980s retro Indian fashion portrait, inspired by the reference image. Keep the exact face, facial features, face structure, skin tone, identity, and natural proportions unchanged. Do not alter or beautify the face. Dress her in a full-sleeve pink shirt tucked neatly into a black high-waisted skirt with a stylish belt. Remove the scarf completely. Add simple 1980s-inspired accessories. Give her bouncy, voluminous retro hair styled with a cute ribbon. Create an authentic 1980s background and atmosphere. Use a Kodak film-camera look with warm faded colors, subtle film grain, soft analog texture, gentle vintage lighting, and natural skin texture. Make it look like a genuine photograph taken in the 1980s, not a modern photo with a vintage filter. No watermark, no text, no distortion.

GPT Image 2.5 サンプル 14

A documentary wildlife photograph of dozens of seagulls resting on brown seaweed-covered tidal flats, scattered between winding pools of vivid blue seawater. Some stand with clear reflections, others rest or stretch their wings. Elevated viewpoint, layered horizontal composition, strong natural sunlight, crisp shadows, detailed coastal textures, realistic colors. Landscape format, no text or interface elements.

GPT Image 2.5 サンプル 15

A dramatic low-angle photograph of a male cyclist resting astride a mountain bike on a rocky countryside trail, drinking from a water bottle. Black cycling kit, red-and-black helmet, sunglasses. The large front tire dominates the foreground, surrounded by dry golden grass and distant wind turbines beneath a turquoise sky with towering clouds. Warm late-afternoon sunlight, long shadows, rich earthy colors, detailed gravel, wide-angle perspective. Vertical composition, realistic outdoor sports photography.

GPT Image 2.5 サンプル 16

Create a professional 16:9 character reference sheet based strictly on the uploaded image. Preserve the character’s exact face, age, hairstyle, body proportions, costume, accessories, colors, and distinctive details without redesign. Include: One large hero portrait. Five aligned full-body views: front, front three-quarter, side, back three-quarter, and back. Six expressions: neutral, happy, serious, angry, surprised, and sad. 4–6 natural full-body poses. Costume, accessory, and material close-ups. A faithful color palette, proportion guides, and silhouette thumbnail. Use a clean off-white background, organized grid, generous spacing, readable labels, consistent scale, neutral studio lighting, and detailed materials. Keep identity and left/right design details consistent throughout. No overlapping or cropped figures, anatomical errors, extra props, clutter, logos, or watermarks. Target resolution: 15360 × 8640.

ChatGPT Image 2.5 x Seedance 2.5

最後の一皿

動画の生成結果

プロンプト

Create ONE 16:9 landscape storyboard image with exactly 16 panels in a clean 4×4 grid, read left to right, top to bottom. Polished 3D animation style, expressive comedy, detailed food, cinematic lighting. Keep two consistent characters: a tall, lean, long-limbed chef with a dark moustache, white jacket and apron; and a short, round, exhausted guest with messy hair, a wrinkled shirt and loose tie. Setting: a closed restaurant kitchen with steel counters, copper pans and large wall switches. Panels: 1. The chef wipes the counter; the guest slumps beside cold takeaway noodles under one spotlight. 2. The guest pokes the noodles, then drops his forehead onto the counter. 3. The chef notices him and sets down his clothes. 4. The chef rolls up his sleeves and tightens his apron. 5. He switches on the kitchen lights; the burners ignite. 6. He rapidly slices beef into neat pieces. 7. Orange flames rise from a copper pan; the chef remains calm. 8. The guest ducks as a pan flies past, his tie blown backward. 9. The chef juggles cooking tasks and tosses a pan overhead. 10. A rapidly spinning pepper grinder releases a huge pepper cloud. 11. The guest sneezes, then watches wide-eyed. 12. The chef catches two falling pans without spilling anything. 13. Overhead view of beautifully plated beef medallions, dark sauce and three tiny herbs. 14. The guest tastes the dish, closes his eyes and sheds a joyful tear. 15. The guest grins; the chef smirks and discards the takeaway box. 16. The kitchen goes dark except for the guest’s spotlight as he keeps eating. Maintain matching faces, costumes, props and kitchen layout. Lighting shifts from cool darkness to warm cooking light, then back to darkness. Clear panel borders, small numbers 1–16 only, no dialogue, captions, logos or watermark.

意外なヒーローたち

動画の生成結果

プロンプト

Create a premium cinematic character bible sheet for CALVIN & BOB from central intelligence. LAYOUT: Split screen partner format. Two halves divided by a bold dramatic dividing element in the center. LEFT SIDE — CALVIN: Deep blue watercolor splash behind him fading into center. Large bold brushstroke text CALVIN top left in deep blue. Below small text: THE SPY / CENTRAL INTELLIGENCE. One massive dramatic cropped hero image of Calvin from mid-thigh up — enormous muscular build, light blue unicorn t-shirt, no fanny pack, serious focused expression, fist raised, deep blue watercolor splash radiating behind him. CENTER: Bold dramatic CENTRAL INTELLIGENCE in deep blue slightly worn. Below it small text: OFFICE PARK. UNLIKELY HEROES. RIGHT SIDE — BOB: Warm yellow and white watercolor splash behind him fading into center. Large bold brushstroke text BOB top right in deep yellow. Below small text: THE ACCOUNTANT / CENTRAL INTELLIGENCE. One massive dramatic cropped hero image of Bob from mid-thigh up — wide nervous eyes, white striped shirt, normal grey blue tie loosened, mouth open mid scream, warm yellow and white watercolor splash radiating behind him. BOTTOM CENTER: Color palette — deep blue, warm yellow, white, grey. Tagline centered: ONE WAS READY. ONE WAS NOT. OVERALL: Clean white background, deep blue watercolor left side, warm yellow watercolor right side, dramatic blue center divider, bold flat color blocking, chunky simplified forms, hard edge shadows, thick black outlines, vibrant saturated colors, minimal clean typography, cinematic cel-shaded 3D anime, hand-painted textures, not cartoon not Disney not Pixar, print ready.

ビーフウェリントン

動画の生成結果

プロンプト

Create a 15-second cinematic anime cooking sequence in a stainless-steel kitchen with warm dramatic lighting. Follow the uploaded character sheet exactly: a tall, athletic, middle-aged chef with spiky blonde hair, blue eyes, a white chef uniform and black apron. No other chefs. 0–2s: Sear beef fillet, turning each side until golden. 2–4s: Finely chop mushrooms and cook into dark duxelles. 4–6s: Layer Parma ham and duxelles, then tightly roll around the beef using cling film. 6–8s: Remove the film, wrap in pastry, seal and brush with egg wash. 8–10s: Place in the oven; jump cut to the golden baked Wellington. 10–13s: Sound briefly drops as he slices through, revealing pink beef beneath crisp pastry. 13–15s: Wide hero shot of the steaming Wellington; the chef steps back proudly. Cel-shaded 3D anime, hand-painted textures, strong shadows and subtle film grain. Food-focused close-ups, occasional chef reactions, cuts every 2–3 seconds. Preserve cooking order, compressing preparation and baking through montage. Build orchestral music with sizzling and chopping sounds toward the finale.

SeeGen AI で GPT Image 2.5 を使う方法

ワークスペース、Playground、API で Flare または Sunburst をご利用ください。生成した画像は1枚ごとに課金されます。

1

プロンプトや画像を追加

新しく作りたい画像を説明するか、参照画像を追加して作成・変更したい内容を伝えます。

2

設定を選んで生成

画像サイズと品質を選び、必要なクレジットを確認して「生成」をクリックします。

3

確認してダウンロード

画像を確認してダウンロードします。さらに編集する場合は結果をアップロードし、変更する箇所と残す箇所を説明してください。

コミュニティの反響

GPT Image 2.5 のレビューとコミュニティの議論

Reddit、YouTube、X のユーザーレビュー、画像例、実演をチェック。使われているプロンプト、共有された結果、直面した制約を確認できます。

Reddit の体験談と議論

YouTube のレビューとチュートリアル

X のサンプルと第一印象

ChatGPT Image 2.5 画像生成ツールのよくある質問

Flare と Sunburst の違いは?+
Flare は高速な画像生成向け、Sunburst は精度が重要な細かな編集向けです。どちらもテキストから画像を作成でき、参照画像も使えます。
スケッチ、写真、スタイルの参考画像を一緒に使えますか?+
はい。一緒にアップロードし、それぞれの役割を説明してください。例:「スケッチのレイアウトに従い、写真の人物を残し、スタイル参考画像の色を使う」。
どの画像を参照するか、どう伝えればよいですか?+
アップロード順で画像を指定し、それぞれから使う要素を説明します。例:「顔は @Image1、服装は @Image2 を使い、背景は @Image1 のままにする」。
画像の一部だけを変更するには?+
変える箇所と残す箇所を明示します。例:「ジャケットを青にする。顔、ポーズ、光、背景は変えない」。小さな意図しない変更が起こる場合もあるため、結果を確認してください。
編集を繰り返すと細部が変わるのはなぜ?+
各編集で生じた小さな違いが積み重なるためです。元の参照画像を再利用し、顔、商品の形、ロゴの位置など、保ちたい細部を繰り返し指定すると抑えられます。
GPT Image 2.5 でさまざまな言語の文字を追加できますか?+
はい。ただし精度は言語、フォント、文字サイズによって異なります。正確な文言を引用符で囲み、配置を指定してください。公開前に綴りや小さな文字を確認しましょう。
GPT Image 2.5 は GIF を作れますか?+
生成するのは静止画で、完成したアニメーション GIF ではありません。複数のフレームを生成し、GIF 編集ツールで結合できます。背景や構図をそろえ、フレーム間の変化を小さくしてください。
画像を Seedance 2.5 の動画にするには?+
画像をダウンロードして Seedance 2.5 にアップロードするか、ギャラリーから選び、参照画像や開始フレームとして使います。動き、カメラワーク、タイミングを説明してください。GPT Image 2.5 がビジュアルを作り、Seedance 2.5 が動きを加えます。

GPT Image 2.5 でアイデアを形に

プロンプト、スケッチ、写真から始めましょう。SeeGen AI の GPT Image 2.5 で新しい作品を作成したり、既存の画像を磨いたりできます。