# Flux 2 Klein 4B vs GPT Image 2.5 Sunburst

As of Oct 15, 2026, Flux 2 Klein 4B leads GPT Image 2.5 Sunburst in 0 of 2 shared categories.

Flux 2 Klein 4B: price per 1M tokens is unset in the catalog.

GPT Image 2.5 Sunburst: price per 1M tokens is unset in the catalog.

Flux 2 Klein 4B: open weights.

GPT Image 2.5 Sunburst: closed weights.

- Which to pick, Image generation: As of Oct 15, 2026, GPT Image 2.5 Sunburst leads Flux 2 Klein 4B in Image generation at #1 against #67.
- Which to pick, Image edit: As of Oct 15, 2026, GPT Image 2.5 Sunburst leads Flux 2 Klein 4B in Image edit at #1 against #47.

As of Oct 15, 2026, Flux 2 Klein 4B is ranked #47 in Image edit (since Oct 15, 2026; sources LMArena Image Edit; methodology v1.0).

As of Oct 15, 2026, GPT Image 2.5 Sunburst is state of the art in Image generation (since Sep 24, 2026; sources LMArena Text-to-Image; methodology v1.0).