Qwen Image 2512 comes from Alibaba's Qwen research team, which has built a reputation for open-source AI models that punch above their weight. The image model continues this tradition—despite being freely available and relatively inexpensive to run, it produces genuinely photorealistic imagery with particularly strong skin textures, natural lighting, and environmental detail. With per-megapixel pricing, it represents one of the best quality-to-cost ratios among current models.
Seedream V4.5 is ByteDance's flagship image generation model, carrying forward the legacy of earlier versions that achieved an ELO of 1222. Version 4.5 sits around 1147 on current benchmarks, still placing it among the better models available. ByteDance built this with production use cases in mind: fast generation (~2.5s), up to 4K resolution, image-to-image capabilities, and a prompt enhancement feature that helps users get better results without prompt engineering expertise.
The pricing tells an interesting story. Qwen charges per megapixel, meaning cost scales with resolution. Seedream uses flat pricing regardless of resolution. For standard generation, Seedream costs about twice as much—a modest premium for a model with higher benchmarks. But when you consider Seedream's 2K and 4K options at the same price, the value proposition shifts for high-resolution work.
Both models excel at photorealism, though they take different approaches. Qwen tends toward a more documentary, natural aesthetic while Seedream often produces slightly more polished, commercial-looking results. Neither represents the absolute pinnacle of quality, but both deliver professional-grade output that satisfies most production requirements.
Tip: If you need image-to-image capabilities, high resolution output, or faster generation, Seedream's premium is easily justified. For pure text-to-image at standard resolution, Qwen often delivers comparable quality at half the cost.