Seedream 5.5 is on Runware from $0.02 per image

Runware added Seedream 5.5, ByteDance's image model that builds on Seedream 5.0 Pro.

What it adds over 5.0 Pro is transparent output for text-to-image, layer decomposition with a layer count you control and text recognition, and multi-turn edits. Set settings.background to transparent and you get an RGBA image, either from a prompt or from a reference photo that has no alpha channel. Layer decomposition splits one image into a base plus up to 99 layers, and text layers come back with their text, font and color. Edits accept up to 10 reference images.

Output comes in 1K, 1.5K and 2K tiers, or custom sizes up to about 4.6 megapixels at aspect ratios from 1:16 to 16:1. Runware lists $0.02 per image up to 1.5K and $0.035 at 2K, plus $0.008 per input image. If you already call Seedream 5.0 Pro on Runware, switch the model ID to bytedance:seedream@5.5.

Runware also passes along ByteDance's own reported results, that unedited areas stay pixel-stable across 100 rounds of edits and that usability in film and office work is more than double that of 5.0 Pro.