Seedream V4.5 is ByteDance's flagship image generation model, part of their successful Seedream series. With an ELO around 1147 on benchmark leaderboards, it represents a capable mid-premium option. The model stands out for its combination of speed, resolution flexibility, and features—generating in approximately 2.5 seconds with support for 1K, 2K, and 4K output resolutions. It also includes image-to-image capabilities and built-in prompt enhancement, all at a flat rate regardless of resolution.
ImagineArt 1.5 is a newer entrant focused specifically on lifelike realism. With an ELO score around 1157, it actually benchmarks slightly higher than Seedream V4.5 in overall quality ratings. ImagineArt positions itself as a photorealism specialist, aiming for images that feel natural and authentic rather than obviously AI-generated. At roughly 25% less than Seedream, it offers competitive pricing for standard-resolution photorealistic work.
The two models represent different approaches to quality. Seedream V4.5 offers versatility—4K resolution, image editing, prompt enhancement—making it suitable for varied production workflows. ImagineArt 1.5 takes a more focused approach, prioritizing natural photographic aesthetics without the additional features. This specialization can produce more consistently realistic-looking results when that specific quality matters most.
Pricing favors ImagineArt 1.5 with roughly 25% savings over Seedream. However, Seedream's flat-rate pricing includes 4K resolution at no extra cost, making it the clear value choice for high-resolution work. The decision often comes down to whether you need Seedream's resolution and editing features, or whether ImagineArt's focused photorealism at a lower price better suits your standard-resolution needs.
Tip: Choose Seedream V4.5 for high-resolution output, image-to-image workflows, or when you want prompt enhancement. Choose ImagineArt 1.5 for budget-conscious photorealistic work at standard resolutions where natural-looking results matter most.