Unit economics

Self-Hosting Flux and Qwen vs Paying Per Image: The Real Unit Economics

2026年10月 · minimaxi.design ECスタジオ

Flux and Qwen Image Edit both have open weights, so every seller with a growing catalogue eventually asks: should we run them ourselves? The honest answer depends on three numbers you can estimate before buying anything — GPU cost per hour, images per hour, and how busy the GPU actually is.

The formula

Cost per image = GPU cost per hour ÷ (images per hour × utilisation), plus engineering time, storage and failed generations.

Worked example with stated assumptions (not a benchmark): a rented high-end GPU at $2.50 per hour, 10 seconds per edit, gives 360 images per hour. At 100% utilisation that is about $0.007 per image. At 25% utilisation — realistic for a team that edits in bursts — it is about $0.028 per image. Compare that with the live pay-per-image list prices below.

このサイトの画像編集・画像ツール 65 種のリスト価格は1枚 $0.0060 から $0.22 まで。月額サブスクはなく、出力1枚ごとの従量課金です。

The costs people forget

• Idle time. A GPU billed per hour costs the same while nobody is editing. Utilisation, not raw speed, decides the bill.
• Engineering. Model updates, queueing, upscaler and cutout models, monitoring. A few days of engineering per month outweigh years of API fees for a small catalogue.
• Licences. Qwen-Image weights are released under Apache 2.0. FLUX.1 Kontext [dev] weights ship under a non-commercial licence; commercial self-hosting needs a licence from Black Forest Labs. Hosted API calls are covered by the provider. Read the current licence text before deploying.
• Retries. Your effective cost is per accepted image. A model with a 50% accept rate doubles every figure above.

When self-hosting wins

• Steady, high volume — tens of thousands of edits a month, every month.
• You need a custom fine-tune or LoRA on your brand style (see LoRA training) and want it on dedicated hardware.
• Data-residency rules require images to stay on your infrastructure.

When pay-per-image wins

• Bursty work: launches, seasonal refreshes, new suppliers.
• You want several models (Flux for scenes, Qwen for text, an upscaler, a cutout model) without operating each one.
• The catalogue is under a few thousand SKUs.

At current list prices, editing a full eight-image set for 100 SKUs is about $25.20 on Qwen Image Edit Plus. If that number is small next to an engineer's week, pay per image. If you need dedicated capacity, Supercomputer runs batches on reserved GPUs.