fal.ai: Up to 8 reference images. · KREA: Up to 8 reference images. · WaveSpeed: Up to 8 reference images.
Reference names
fal.ai: Prompts name references in words, not with @ tokens. · KREA: Prompts name references in words, not with @ tokens. · WaveSpeed: Prompts name references in words, not with @ tokens.
Outputs
Output size
fal.ai: square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9, auto · WaveSpeed: 256–4096 pixels on a side.
The edit endpoint krea/v3/edit bills that same $0.03 per megapixel for the output and for each reference image: 1024×1024 with one reference is $0.06, and 2048×2048 with eight references is $1.08.