The top alternative to gpt-image-1 is GPT Image 2 API, rated 1258 Elo (#2 of 71) in the Image Editing Arena, followed by GPT-Image 1.5 (1254 Elo) (gpt-image-1 itself ranks #48 of 71 at 1135 Elo).
GPT Image 2 API is the highest-ranked image to image alternative, with 1258 Elo (#2 of 71) in the Image Editing Arena from blind human-preference votes. The full ranking below lists 15 alternatives.
All models here compete in the same human-preference arena as gpt-image-1, which holds 1135 Elo at rank #48 — open any model page or a head-to-head compare link for the direct matchup.