2026年AI画像生成モデルの価格比較：Midjourney、DALL·E、Flux、Imagen、Wan、Doubao等の1枚あたり料金
Why image generator pricing is harder than it looks
Every image generator advertises a single headline price, but the real cost depends on four variables that change the number by 5–10×:
- Resolution and quality tier — 1024×1024 standard vs. 2048×2048 HD can triple the per-image cost.
- Subscription vs. pay-as-you-go API — a $30/month Midjourney Standard plan works out to about $0.033 per image, while the same prompt on the OpenAI API costs $0.04–$0.13.
- Reject rate — production teams throw away 50–70% of generations. A 60% reject rate means you pay 2.5× the headline price per kept image.
- Hidden credits — Adobe Firefly, Leonardo, and Recraft all meter “premium” features separately, so the actual cost per image is rarely the number on the pricing page.
This guide ranks the 16 most-used text-to-image models in 2026 on a single cost-per-image axis, then translates that into monthly subscription cost for three realistic workloads: 100 images/month (casual), 1,000 images/month (creator), and 10,000 images/month (studio).
At-a-glance: per-image cost of every major model (Q3 2026)
| Model | Provider | Per image (standard, 1024²) | Per image (HD/2K) | Free tier | API access |
|---|---|---|---|---|---|
| Flux.1 Schnell | Black Forest Labs | $0.003 | — | Yes (rate-limited) | Yes |
| GPT Image 1 Mini | OpenAI | $0.005 (low) / $0.011 (med) / $0.036 (high) | $0.049 | ChatGPT free | Yes |
| Tongyi Wanxiang 2.2-t2i-flash | Alibaba Bailian | $0.004 (¥0.03) | — | 90 days / 1M tokens | Yes |
| Imagen 4 Fast | $0.02 | — | AI Studio | Yes | |
| Ideogram 3.0 Turbo | Ideogram | $0.03 | $0.09 (Quality) | 10/day | Yes |
| Midjourney v7 | Midjourney | ~$0.033 (Standard plan) | ~$0.033 | None | Enterprise only |
| GPT Image 1.5 | OpenAI | $0.034 (med) | $0.133 (high) | ChatGPT Plus | Yes |
| Flux.1.1 Pro | Black Forest Labs | $0.04 | $0.06 (Ultra) | Playground | Yes |
| Imagen 4 | $0.04 | $0.06 (Ultra) | AI Studio | Yes | |
| Recraft V3 | Recraft | $0.04 | — | 30 credits/day | Yes |
| Zhipu CogView-4 | Zhipu BigModel | $0.007 (¥0.05) | — | OpenRouter ~$0.02 | Yes |
| Gemini 2.5 Flash Image (“Nano Banana”) | $0.039 | — | Flow (zero credits) | Yes | |
| DALL·E 3 (legacy) | OpenAI | $0.04 (std) | $0.08 (HD) | Bing free | Until May 2026 |
| Wenxin Yige / ERNIE-image | Baidu Qianfan | Consumer: free daily credits; API billed per token | — | Daily free credits (watermarked) | Yes |
| Tencent Hunyuan Express | Tencent Cloud | $0.008–0.011 (¥0.06–0.08) | — | 10K free images (one-time) | Yes |
| Ideogram 4.0 Default | Ideogram | $0.06 | $0.10 (Quality) | 10/day | Yes |
| Hunyuan 2.0 | Tencent Cloud | $0.014 (¥0.10) | — | 10K free images | Yes |
| Stable Diffusion 3.5 Large | Stability AI | $0.065 | $0.08 (Ultra) | Self-host free | Yes |
| Nano Banana 2 (Gemini 3.1 Flash Image) | $0.067 | $0.151 (4K) | AI Studio | Yes | |
| FLUX.2 Max | Black Forest Labs | $0.07 (1MP) | $0.16 (4MP) | Playground | Yes |
| Qwen-Image-Max | Alibaba / Qwen | $0.08 (¥0.15–0.20) | — | 302.AI / Qwen App | Yes |
| Jimeng AI 4.0 (Doubao) | Volcano Engine | $0.028–0.031 (¥0.20–0.22) | 4K billed separately | 200 free calls (concurrency 1) | Yes |
| Doubao Seedream 5.0 Lite | Volcano Engine | $0.031 (¥0.22) | — | 200 trial calls | Yes |
| Doubao Seedream 4.5 | Volcano Engine / BytePlus | $0.035 (¥0.25 at 1K/2K) | $0.07 (¥0.50, character set) | 200 trial calls | Yes |
| Hunyuan 3.0 | Tencent Cloud | $0.028 (¥0.20, high-tier) | — | 10K free images | Yes |
| Nano Banana Pro (Gemini 3 Pro Image) | $0.134 | $0.24 (4K) | AI Studio | Yes | |
| Doubao Seedream 5.0 Pro | Volcano Engine / BytePlus | $0.19 (¥1.36 at 1K/2K) | $0.34 (¥2.44 at 4K) | None | Yes |
| Hunyuan TurboS | Tencent Cloud | $0.001 input / $0.0028 output per 1M tokens | — | — | Yes |
| Zhipu CogView-3-Flash | Zhipu BigModel | Free | — | Fully free, concurrency 30 | Yes |
| Hunyuan-lite | Tencent Cloud | Free (text only) | — | Permanently free | Yes |
| Kimi K2.5 multimodal | Moonshot | ¥2 input / ¥10 output per 1M tokens (image included in plan) | — | Kimi App free quota | Yes |
Numbers verified against each provider’s public pricing page in July 2026. Midjourney’s per-image cost is the effective rate on a $30/month Standard plan (15 fast GPU hours ≈ 900 images); Mega-plan users drop to ~$0.013 per image.
Chinese models: per-image cost in CNY and USD (Q3 2026)
Chinese models price in RMB (¥) on the domestic platform, but all the major models are now accessible internationally through BytePlus, Alibaba Model Studio (international), fal.ai, PiAPI, 302.AI, OpenRouter, and others. Domestic price is usually 2–3× cheaper than the international route because of the +86 phone-number requirement on Volcano Engine and the CNY-only payment on Baidu Qianfan.
| Model | Provider | Domestic per-image (standard) | Domestic 4K / flagship | International channel per-image | Free tier |
|---|---|---|---|---|---|
| Tongyi Wanxiang wan2.2-t2i-flash | Alibaba Bailian | ¥0.03 (~$0.004) | — | fal.ai $0.008–0.02 | 90 days / 1M tokens |
| Tongyi Wanxiang wan2.2-t2i-plus | Alibaba Bailian | ¥0.05 (~$0.007) | — | fal.ai ~$0.02 | Same as above |
| Tongyi Wanxiang wan2.5-t2i-preview | Alibaba Bailian | ¥0.05 | — | fal.ai ~$0.07 (video) | Same as above |
| Qwen-Image-Max (Qwen flagship) | Alibaba / Qwen | ¥0.15–0.20 | — | 302.AI $0.08/image | Qwen App free trial |
| Qwen-Image-3.0 (released 2026-07) | Alibaba / Qwen | API invite-only | 4.5K-token long prompts | fal.ai TBD | Qwen Studio / Qwen App coming soon |
| Doubao Seedream 4.5 | Volcano Engine / BytePlus | ¥0.25 (25 credits at 1K/2K) | ¥0.50 (character set + 3-view) | fal.ai $0.0675 (≤1536²) / $0.135 (≤2048²) | 200 trial calls |
| Doubao Seedream 5.0 Lite | Volcano Engine | ¥0.22 (22 credits) | — | fal.ai $0.04 (via oFox relay) | 200 trial calls |
| Doubao Seedream 5.0 Pro | Volcano Engine / BytePlus | 136 credits (¥1.36) at 1K/2K; 244 credits (¥2.44) at 4K | 4K ¥2.44 | fal.ai $0.0675–0.135 | None |
| Jimeng AI 4.0 (image) | Volcano Engine | ¥0.20–0.22 | 4K billed separately | — | 200 free calls (concurrency 1) |
| Wenxin Yige / ERNIE-image (consumer) | Baidu | Free daily credits + points; API billed per token | — | — | Daily free credits (watermarked) |
| ERNIE 4.5 / X1 text-to-image | Baidu Qianfan | Input ¥0.004/1K tokens, output ¥0.016/1K tokens | — | — | Wenxin Yiyan / Qianfan free on signup |
| Tencent Hunyuan Express | Tencent Cloud | ¥0.06–0.08/image | — | — | 10K free images (one-time) |
| Tencent Hunyuan 2.0 | Tencent Cloud | ¥0.10/image | — | — | Same as above |
| Tencent Hunyuan 3.0 | Tencent Cloud | ¥0.20/image (high-tier) | — | — | Same as above |
| Tencent Hunyuan portrait / style / product-bg | Tencent Cloud | ¥0.06/image | — | — | Same as above |
| Tencent Hunyuan AI portrait / model try-on | Tencent Cloud | ¥0.22 / ¥0.25/image | — | — | Same as above |
| Zhipu CogView-4 | Zhipu BigModel | ¥0.05/image (~$0.007) | — | OpenRouter equivalent ~$0.02 | — |
| Zhipu CogView-3-Flash | Zhipu BigModel | Free | — | — | Fully free, concurrency 30 |
| Zhipu GLM-Image (multimodal generation) | Zhipu BigModel | Launching soon, pricing on par with CogView-4 | — | — | Time-limited free |
| Kimi K2.5 multimodal image | Moonshot AI | Bundled in monthly plan; ¥2 input / ¥10 output per 1M tokens | — | — | Kimi App free quota |
| Hunyuan-lite | Tencent Cloud | Free (text only) | — | — | Permanently free |
| Hunyuan TurboS | Tencent Cloud | ¥0.80 input / ¥2.00 output per 1M tokens | — | — | — |
Key takeaway: Domestic Chinese pricing is 30–70% cheaper than international. Tongyi Wanxiang wan2.2-t2i-flash is the cheapest per-image API (¥0.03/image), and CogView-3-Flash and Hunyuan-lite are the truly zero-cost entry points.
Subscription pricing for the big four consumer tools
| Tool | Free tier | Entry paid | Mid tier | Top tier | Best for |
|---|---|---|---|---|---|
| Midjourney v7 | None (since April 2023) | Basic $10/mo (~200 images) | Standard $30/mo (15 fast hrs + unlimited Relax) | Pro $60/mo, Mega $120/mo (60 hrs, Stealth) | Artistic, photorealistic, brand-consistent work |
| ChatGPT (GPT Image 1.5) | Limited daily images | Plus $20/mo (soft daily cap) | Pro $200/mo (unlimited) | Enterprise custom | Prompt adherence, in-chat editing |
| Adobe Firefly | 25 credits/mo (watermarked) | Standard $9.99/mo (2,000 credits, unlimited std) | Pro $19.99/mo (4,000 credits) | Premium $199.99/mo (50,000 credits) | Commercial-safe, Creative Cloud integration |
| Leonardo AI | 150 credits/day (~25 standard images) | Apprentice $12/mo (8,500 credits) | Artisan $24/mo (25,000 credits) | Maestro $48/mo (60,000 credits + API) | Custom LoRAs, consistent character, multi-model access |
| Recraft | 30 credits/day, public outputs, no commercial use | Basic $10/mo (1,000 credits) | Pro $16/mo (2,000 credits, video gen) | Premium $160/mo (16,000 credits) | Vector SVG, brand icons, typography |
| Ideogram | 10 generations/day | Plus $8/mo | Pro $20/mo | Max $48/mo | Typography in posters and logos |
Annual billing saves 20% on almost every tool above (Midjourney, Leonardo, Recraft, Ideogram), which is the single biggest discount available without negotiating an enterprise contract.
Subscription pricing for the major Chinese tools (¥/month)
| Tool | Free tier | Entry paid | Mid tier | Top tier | Best for |
|---|---|---|---|---|---|
| Jimeng AI (Dreamina) | Daily free credits (200 trial calls, concurrency 1) | Standard ¥69/mo (auto-renew, ~880 credits) | Advanced ¥200/mo | Premium ¥500/mo | Chinese posters, Doujin / Jianying workflow |
| Jimeng AI credit packs | — | 1K images ¥200; 5K images ¥1,000; 10K images ¥2,000 | 50K images ¥80,000 | 100K images ¥180,000 | API integration + high concurrency |
| Wenxin Yige (Baidu) | Daily free credits (watermarked) | Monthly membership from ¥30/mo | Premium ¥60+/mo | Commercial license pack | Chinese creatives, e-commerce templates |
| Baidu Qianfan ERNIE image API | Free tokens for new Qianfan users | Tiered per-token (¥0.004 input / ¥0.016 output per 1K) | Volume packs | Enterprise contract | Custom development, cross-modal |
| Tencent Hunyuan (API + console) | 10K free images (one-time activation) | 1K images ¥99; 10K images ¥850 | 100K images ¥7,500 | 1M images ¥65,000 | Posters, e-commerce images, product images |
| Tongyi Wanxiang (Alibaba Bailian) | 90 days / 1M free tokens for new users | Per-image ¥0.03–0.20 | Volume packs (e.g. ¥200/5K) | Coding Plan ¥9.9 first month | Alibaba ecosystem, Qwen Studio |
| Zhipu BigModel (CogView) | CogView-3-Flash fully free, concurrency 30 | GLM-4-Air ¥1/1M tokens | GLM-5 ¥30 input / ¥90 output per 1M tokens | GLM-5.1 ¥6/¥24; Coding Plan free | CJK-prompt friendly, large free quota |
| Moonshot Kimi K2.5 | Kimi App free quota | Kimi Coding Plan (subscription) | Kimi multimodal ¥2/¥10 per 1M tokens | Enterprise contract | Long text + multimodal image |
| Doubao Pro (launched 2026-06-23) | Doubao App free | Standard ¥68/mo (auto-renew, includes 2.1 Pro) | Enhanced ¥200/mo (4× quota) | Premium ¥500/mo (10× quota) | All-in-one (text + image + video + digital human) |
A few Chinese subscription details that differ sharply from global services:
- Jimeng AI runs a dual membership + credit system. The ¥69/mo Standard plan comes with ~880 credits per month, which translates to roughly 4,000 standard images or 200 high-quality images — but expect queues during peak hours (tens of thousands of users waiting, 2–11 hour delays are common).
- Doubao launched the new “Pro” tier in June 2026, which bundles Doubao 2.1 Pro + office tasks + digital human + video + Skills into one ¥68/mo package. For agent-style all-stack users, this is better value than buying ChatGPT Plus alone.
- Baidu Qianfan markets ERNIE 4.5 / X1 text-to-image at ¥0.004 / ¥0.016 per 1K tokens, advertised as “1% of GPT-4.5 price.” Converted to per-image, that ends up 2–3× cheaper than GPT Image 1.5 Medium.
- Tencent Hunyuan’s 10K free image pack is a one-time gift. The pack does not auto-roll into pay-as-you-go when exhausted — you must manually enable postpaid billing. This is the most common gotcha for new users.
- Zhipu is the most aggressive on the free tier — CogView-3-Flash is completely free with concurrency 30, and GLM-4.7-Flash is also free, making it the best entry point for individual developers.
Cost by workload
100 images/month (casual creator, blog illustrations)
For a one-image-per-day workflow, the cheapest option is Microsoft Designer (free, 15 fast + unlimited standard per day, no watermark). Among paid tools, the rankings are:
- Midjourney Basic — $10/mo, ~200 fast images. Effectively free overage if you stay under 200.
- ChatGPT Plus — $20/mo, soft daily cap on GPT Image 1.5. Best if you also use ChatGPT for writing.
- Recraft Basic annual — ~$10/mo. Best if you need SVG vector output.
- Ideogram Plus — $8/mo. Best if you need typography.
1,000 images/month (full-time creator, social media)
At 1,000 images per month, the per-image economics start to matter:
- Midjourney Standard — $30/mo, unlimited Relax mode + 15 fast hours. Effective rate ~$0.033/image.
- FLUX.1.1 Pro API — $0.04 × 1,000 = $40/mo, no subscription commitment.
- Imagen 4 standard API — $0.04 × 1,000 = $40/mo, best photorealism for the price.
- Adobe Firefly Standard — $9.99/mo, 2,000 premium credits. Unlimited standard generations. Bundled free with most Creative Cloud plans.
- Recraft Pro annual — ~$16/mo, 2,000 credits. Vector + image.
- China pick: Tongyi Wanxiang wan2.2-t2i-flash API — ¥0.03 × 1,000 = ¥30/mo (~$4.20), roughly 1/10 the price of comparable international models.
- China pick: Tencent Hunyuan 2.0 — ¥0.10 × 1,000 = ¥100/mo (~$14), CJK-prompt friendly with native Chinese aesthetics.
- China multimodal: Doubao Pro ¥68/mo — includes 2.1 Pro text + Seedream image + Seedance video. Quota is 5× the free tier, equivalent to 1,000–2,000 images.
10,000 images/month (studio, e-commerce, agency)
At this scale, subscription tiers stop being the cheapest path and APIs win on raw cost:
- Self-hosted Stable Diffusion 3.5 on an L40S GPU — ~$0.0008/image at full utilization, about $8/month in compute. Requires ML ops.
- FLUX.1 Schnell API — $0.003 × 10,000 = $30/mo at draft quality.
- FLUX.1.1 Pro API — $0.04 × 10,000 = $400/mo, production-grade quality.
- Imagen 4 Fast — $0.02 × 10,000 = $200/mo. Best photorealism per dollar at scale.
- Midjourney Pro — $60/mo, 30 fast hrs + unlimited Relax. The most cost-effective unlimited plan if your prompts don’t need fast-mode priority.
- China self-host: Tongyi Wanxiang wan2.2-t2i-flash — ¥0.03 × 10,000 = ¥300/mo (~$42), 1/10 of international pricing.
- China at scale: Doubao Seedream 5.0 Lite Volcano API — ¥0.22 × 10,000 = ¥2,200/mo (~$310), on par with Imagen 4 Fast.
- China compliance pick: Tencent Hunyuan 100K image resource pack — ¥7,500/mo (~$1,050), includes Chinese aesthetics and East-Asian style specialization, low IP risk.
- China free ceiling: Zhipu CogView-3-Flash — completely free. Run at concurrency 30 and you can hit 1–2M images/month at zero cost.
The hidden costs the headline prices miss
1. Regeneration tax. A 60% reject rate means you pay 2.5× the headline cost per kept image. Drop your reject rate from 60% to 40% with better prompts and reference images, and your monthly bill drops by ~35% even though the per-image price is unchanged.
2. Premium credit metering. Adobe Firefly, Leonardo, and Recraft all bundle “unlimited” standard generations but meter premium features (vector export, video, partner models) against a credit pool. The Firefly Free tier gives you 25 credits and the Standard plan gives 2,000 — a single Character Reference in Ideogram can cost 2–3× the base rate.
3. Resolution multiplier. Stable Diffusion 3.5 Large is $0.065 at 1MP but $0.08 at 2MP. GPT Image 1.5 high-quality is $0.133 at 1024×1024 and $0.20 at portrait/landscape. If your layout allows square crops, save 30–50%.
4. Stealth and private mode. Midjourney Pro ($60/mo) is the cheapest plan with Stealth Mode (private images, no public gallery). Adobe Firefly and Recraft gate privacy to paid tiers as well. If you generate client work, plan on the mid-tier subscription rather than the entry tier.
5. API rate limits. Free-tier API keys on OpenAI, Stability, and Google are throttled to 5–10 requests/minute. Production traffic needs a paid account and may need to be routed through multiple providers.
6. China-specific gotchas. On Volcano Engine, a +86 phone number is required for signup and the account is CNY-only. The Doubao “credit” unit (a Volcano Engine metering unit called “suan-dian” in Chinese, roughly 1 credit = ¥0.01) means 22 credits ≈ ¥0.22/image. Jimeng AI queues 2–11 hours during peak hours. Wenxin Yige watermarks all free-tier outputs.
By use case: which model wins in 2026
- Photorealism and product photography → Midjourney v7 for the look, FLUX.1.1 Pro Ultra ($0.06/image) for API. Imagen 4 Ultra ($0.06) is the best photorealism per dollar if you don’t need Midjourney’s art-direction controls.
- Typography and posters → Ideogram 4.0 is the only Western model that renders readable in-image text more than 70% of the time. For CJK, Seedream 4.5/5.0 Pro (¥0.25–1.36) renders Chinese, Japanese, and Korean with native-quality typography.
- Vector and brand icons → Recraft V3 is the only major Western model with native SVG export, critical for logo and icon work.
- Commercial-safe enterprise → Adobe Firefly is the only major model trained exclusively on licensed content. The $9.99 Standard plan is bundled free with most Creative Cloud subscriptions. In China, ERNIE 4.5/X1 via Baidu Qianfan and Hunyuan 3.0 are the enterprise-grade commercial-safe options.
- Cheapest at scale → FLUX.1 Schnell at $0.003/image for drafts, Imagen 4 Fast at $0.02 for production photorealism. In China, Tongyi Wanxiang wan2.2-t2i-flash at ¥0.03/image (~$0.004) is the cheapest API.
- Self-hosted, free, fully customizable → Stable Diffusion 3.5 weights on Hugging Face, free commercial license for organizations under $1M annual revenue. In China, Qwen-Image-3.0 and CogView-4 are also open-weight and self-hostable.
- Open-chat editing and brand consistency → GPT Image 1.5 in ChatGPT Plus, $20/month. The best in-conversation “change this, keep that” workflow. The Chinese equivalent is Doubao 2.1 Pro in the new ¥68/month Pro tier.
- Best free option → Microsoft Designer for casual use, Leonardo AI for self-serve experimentation with custom LoRAs. In China, Zhipu CogView-3-Flash (free, concurrency 30) is the strongest free option, followed by Hunyuan-lite.
- Chinese prompts and East-Asian aesthetics → Seedream 4.5/5.0 Pro (Volcano Engine) for multi-reference and Chinese typography, Tongyi Wanxiang wan2.5/2.6 for the “Oriental photorealism” look, Tencent Hunyuan 3.0 for high-end Chinese cultural and traditional aesthetics, Wenxin Yige for e-commerce and Chinese marketing templates.
How to pick
Pick the tool that matches the single use case you spend most of your time on. Multi-assistant workflows are common in 2026 — even power users tend to default to Midjourney for client work, GPT Image 1.5 for quick social media, and FLUX or Stable Diffusion for fully-customized production pipelines.
If you only pay for one subscription, Midjourney Standard at $30/month is still the best value for visual quality in 2026. The output, the v7 art-direction controls, and the new Omni Reference feature (for character consistency) are unmatched at that price.
If you specifically need API access at scale, FLUX.1.1 Pro at $0.04 per image or Imagen 4 at $0.04 per image are the best mid-tier production options.
For typography-led posters and logos, Ideogram 4.0 at $0.06/image (or $8/month for the Plus plan) is the clear winner — no other model produces readable in-image text consistently.
For fully-customizable, open-source workflows, FLUX.1 Dev and Stable Diffusion 3.5 (self-hosted) are the best options, but be prepared to invest GPU hours and developer time in setup.
For commercial safety at the lowest risk, Adobe Firefly Standard at $9.99/month is the cleanest answer — and it’s already included with most Creative Cloud subscriptions. In China, Baidu Qianfan ERNIE 4.5/X1 is the most enterprise-friendly, with full Chinese regulatory compliance and a published “1% of GPT-4.5 price” rate card.
For the single best China-only subscription, Doubao Pro at ¥68/month is the strongest all-in-one bundle in 2026 — text, image, video, digital human, and Skills in one subscription. For free, Zhipu CogView-3-Flash is the ceiling.
Quick reference: cheapest API per image, by use case
If you just want the cheapest way to call a model, here is the answer in two lines per region:
- Global cheapest — Flux.1 Schnell ($0.003) for drafts, FLUX.1.1 Pro ($0.04) for production photorealism, Ideogram 3.0 Turbo ($0.03) for typography.
- China cheapest — Tongyi Wanxiang wan2.2-t2i-flash (¥0.03) for drafts, Doubao Seedream 5.0 Lite (¥0.22) for production, Hunyuan 2.0 (¥0.10) for Chinese aesthetics, CogView-4 (¥0.05) for everything else. All have free trial credits.
- Free with the least friction — Zhipu CogView-3-Flash (China, free) or Microsoft Designer (global, 15 fast + unlimited standard per day).
本ガイドのおすすめ
よくある質問
2026年で1枚あたり最も安いAI画像生成モデルは？
商用APIではFlux.1 Schnellが約0.003ドル/枚で最も安く、次いでGPT Image 1 Miniが0.005ドル（低品質、1024×1024）、Imagen 4 Fastが0.02ドルです。Stable Diffusion XLを自前GPUでセルフホストすると、満負荷時で約0.0008ドル/枚まで下がりますが、ハードウェアを前払いする必要があります。
実際に使うとMidjourneyはDALL·Eより安い？
1枚あたりならそうです。Midjourney Standardの30ドル/月で約900枚の高速画像を生成でき、1枚あたり約0.033ドルです。同じプロンプトをDALL·E 3（現GPT Image 1.5）で行うと0.034〜0.133ドル/枚。ただしMidjourneyには公開APIも無料枠もなく、OpenAIはChatGPT無料プランで1日数枚と20ドル/月のPlusサブスクを提供しています。
2026年最良の無料AI画像生成ツールは？
完全無料ではMicrosoft Designer（旧Bing Image Creator）が2026年最強 — 1日15回の高速生成+無制限の標準モード、ウォーターマークなし。Leonardo AI無料枠は1日150クレジット（約25枚の標準画像）で、自調自測に最適。完全無料のオープンソースは、16GB以上のGPUがあればStable Diffusion 3.5が無料ダウンロードできます。
ChatGPT Plusの画像生成の料金は？
ChatGPT Plusは20ドル/月の定額で、GPT Image 1.5生成を含みますが緩い1日上限があります。上限を超えると待つか、200ドル/月のChatGPT Proにアップグレードすると最高品質で無制限生成できます。内部的には、同じモデルがOpenAI APIでは1024×1024で0.009ドル（低）〜0.133ドル（高）/枚。
最も高額なAI画像生成モデルは？
1枚あたりで最も高い商用オプションは、GPT Image 1.5 Highの1024×1024で0.133ドル、Nano Banana Pro（Gemini 3 Pro Image）の1K/2Kで0.134ドル、Flux.1 Pro Ultraの2Kで0.06ドル。サブスクではMidjourney Mega（120ドル/月）とAdobe Firefly Premium（199.99ドル/月）が最高額です。
Adobe Fireflyは無料ツールと比較して価値がある？
商用安全性を重視するなら価値があります。FireflyはAdobe Stockのライセンシーコンテンツのみで学習した唯一の主要モデルで、企業利用のIPリスクはカテゴリ最低です。9.99ドル/月のStandardプランで2,000プレミアムクレジットと標準生成が無制限になり、大半のCreative CloudサブスクにはFireflyが無料で付属します。
中国系AI画像生成モデルで1枚あたり最も安いのは？
Tongyi Wanxiang 2.2-t2i-flashが0.03元/枚（約0.004ドル）でAlibaba Bailian経由で最安、Qwen-Image-Maxが約0.08ドル/枚でBytePlusおよび302.AIで僅差で続きます。Tencent Hunyuan Expressは0.06〜0.08元/枚、Doubao Seedream 4.5/5.0 Liteは0.22〜0.25元/枚、Wenxin Yigeは毎日のクレジット無料で、有料プランは30元/月からです。完全無料はZhipu CogView-3-FlashがBigModelで無料。
Doubao SeedreamのVolcano Engineと国際リセラーの価格差は？
Volcano Engine（中国国内、+86電話番号が必要）経由：Seedream 5.0 Liteは22クレジット/枚（約0.22元）、Seedream 4.5は25クレジット/枚（約0.25元）で1K/2K出力同額。Seedream 4.5の4K出力はリニアにスケール。国際リセラー（fal.ai、PiAPI、BytePlus ModelArk、302.AI）経由：Seedream 5.0 Proは≤1536²で0.0675ドル/枚、≤2048²で0.135ドル/枚。つまり国際ルートは元国内価格の約2.5〜3倍ですが、中国圏外の開発者にとって唯一の選択肢です。
Wenxin Yige（ERNIE画像）の価格とOpenAI APIの比較は？
Wenxin Yige（消費者向け製品）は毎日のクレジット無料でスタート、有料会員は30元/月から。基盤のERNIE-image API（Baidu Qianfan）の公式レートカードは入力約0.004元/1Kトークン、出力0.016元/1Kトークン、加えて1024×1024で1枚あたり数セント。対照的にOpenAIのGPT Image 1.5 Mediumは0.034ドル/枚 — トークン単価を1枚あたりに換算すると、Baidu APIは標準品質で2〜3倍安く、高品質（OpenAIは0.133ドル/枚）ではるかに安くなります。
2026年中国系画像生成の無料オプションは？
信頼できる選択肢が4つあります。①Zhipu CogView-3-FlashはBigModelで完全無料、コンカレンシー30。②Wenxin Yigeは毎日の無料クレジット割当（ウォーターマーク付き）。③Volcano EngineはJimeng画像生成の無料トライアル200回（コンカレンシー1）。④Hunyuan-liteはTencent Cloudのテキストモデルで完全無料、画像も0.06〜0.08元/枚で安価。国際的にはfal.ai、PiAPI、302.AIが登録時に無料トライアルクレジットを提供。
Zhipu CogView-4はベクター風画像でRecraftより安い？
Zhipu CogView-4は0.05元/枚（約0.007ドル）/生成、Recraftは公開APIで0.04ドル/枚（0.29元）。つまりZhipuはリスト価格で約4〜5倍安い。ただしRecraftはネイティブSVG出力を備えた唯一の主要モデル — 純粋なラスター画像はZhipuが価格で勝利、ベクター出力はコストに関わらずRecraftが唯一の信頼できる選択肢です。