Head to head: Flux 3 Image vs Krea 2 Large
Flux 3 Image vs Krea 2 Large
By Ryan Merket · Published
A prompt-following matchup across intimate interiors, workshop scenes, and carefully staged compositions. The deciding question is whether cinematic atmosphere can outweigh reliable control of framing and scene layout.
Flux 3 Image wins this matchup on consistency, not on every individual image. It scored 65.5 to Krea 2 Large’s 53.5, took seven of eight tasks, and won with 98% statistical confidence—a decisive result, not a photo finish. The pattern is clear across the reading nook, sail loft, greenhouse, hands-and-anatomy, perspective, attribute-binding, and tram-depot prompts: Flux more often honored the requested 16:9 frame while keeping the scene’s defining elements legible and well arranged. Krea could produce appealing images, but square crops repeatedly undercut briefs that explicitly called for wide compositions; in the depot, a large foreground obstruction also compromised the requested symmetry. Krea’s one task win came in the copper foundry, where its dramatic low-angle treatment landed better. That exception matters: Krea can bring cinematic force to a scene. But across this set, atmosphere didn’t compensate for missed framing or less faithful composition as often as Flux’s steadier prompt execution did. **Final call: Flux 3 Image is the stronger choice for prompts with specific framing, spatial relationships, and multiple required details. Krea 2 Large gets the foundry, but Flux gets the matchup.**
Negation
A cozy reading nook with an armchair, a stack of books, and a mug of tea by a window — with absolutely NO plants, NO lamps, and NO artwork or picture frames anywhere in the frame. Warm afternoon light, 16:9.
OpenAI: GPT-6 Luna: Model A closely matches the requested cozy reading nook, with the armchair, stacked books, tea by the window, warm afternoon light, and none of the prohibited items. Model B also avoids plants, lamps, and artwork, but its extra chair and darker, square composition fit the prompt less well. (Second judge pass, order swapped — scores are the average of both: Model A closely matches the requested cozy reading nook, includes the armchair, stacked books, tea, and window, and respects all exclusions i | Anthropic: Claude Fable 5.1: Model A delivers a true 16:9 cozy nook with arm…
Golden-hour sail loft
A painterly realistic 16:9 image of three sailmakers at work in a coastal loft in Nuuk during golden hour: amber sunlight slants through tall salt-flecked windows, igniting floating lint and warming bolts of cream canvas as one worker feeds fabric through an industrial zigzag machine, another marks reef points with blue chalk, and a third holds a triangular sail panel up to the light; long glowing shadows, calm maritime mood, honey-colored wood tables, and a composed side-on view that emphasizes the late-day radiance.
OpenAI: GPT-6 Luna: Model A more completely matches the requested 16:9 coastal loft scene, with all three sailmaking tasks clearly shown and the harbor visible through the windows. Model B has more dramatic golden-hour beams and dust, but its square framing and less evident coastal setting make it a weaker fit overall. (Second judge pass, order swapped — scores are the average of both: Model A better fulfills the requested 16:9 side-on view and clearly places the three sailmakers’ distinct tasks in a coastal Nuuk l | Anthropic: Claude Fable 5.1: Model A delivers the required 16:9 frame, all t…
Greenhouse calibration team
A wide 16:9 editorial-style photograph of six geothermal agronomy technicians coordinating inside a foggy volcanic greenhouse on São Miguel: one kneels beside a tray of purple basil seedlings with a conductivity meter, two confer over a laminated irrigation map clipped to a crate, one steadies a silver CO2 canister, one adjusts a ceiling mist line from a narrow ladder, and the supervisor in orange gloves points toward a row of tagged tomatoes; balanced composition with clear spacing between all workers, hoses and benches leading the eye through one coherent shared workspace, soft diffused morning light glowing through wet glass.
OpenAI: GPT-6 Luna: Model A better matches the requested wide editorial framing and gives the six technicians clear space in one coherent workspace, with the benches and hoses leading through the scene. Model B depicts more of the specified actions explicitly, including the conductivity meter, but its square framing and tighter arrangement depart from the prompt’s balanced 16:9 composition. (Second judge pass, order swapped — scores are the average of both: Model A better matches the requested wide editorial compos | Anthropic: Claude Fable 5.1: Model A delivers the requested wide 16:9 editor…
Hands & anatomy
A natural candid photo of a person tying a friendship bracelet, both hands clearly visible with anatomically correct fingers and a plausible grip on the threads, soft daylight, shallow depth of field, 16:9.
OpenAI: GPT-6 Luna: Model A better fulfills the candid, softly lit 16:9 scene, with both hands clearly visible in a plausible thread-working grip. Model B has appealing close-up detail, but its square crop misses the requested aspect ratio and shows less of the overall activity. (Second judge pass, order swapped — scores are the average of both: Model B has a crisp, appealing close-up with a convincing grip, but its square crop departs from the requested 16:9 framing. Model A shows the bracelet-making action and bo | Anthropic: Claude Fable 5.1: Model A delivers the requested 16:9 frame, soft…
Perspective & scale
A photorealistic one-point-perspective shot down a long empty library aisle, shelves receding to a single vanishing point, books getting consistently smaller with distance and nothing warped or wrongly sized, warm overhead light, 16:9.
OpenAI: GPT-6 Luna: Model A delivers a clear, balanced one-point perspective with consistently receding shelves and books, warm overhead lighting, and the requested wide format. Model B has an atmospheric look, but its square framing, dimmer lighting, and softer, less orderly shelves make it a weaker match. (Second judge pass, order swapped — scores are the average of both: Model A more clearly delivers the requested 16:9 one-point-perspective aisle, with shelves and books consistently diminishing toward a centered | Anthropic: Claude Fable 5.1: Model A delivers a clean 16:9 one-point perspec…
Attribute binding
A photorealistic tabletop scene: a matte green cube to the LEFT of a glossy red sphere, a small blue cylinder BEHIND both, and a single yellow rubber duck sitting ON TOP of the cube. Colors must stay on the correct objects. Soft studio light, 16:9.
OpenAI: GPT-6 Luna: Model A closely matches the requested 16:9 photorealistic tabletop arrangement, with the duck on the green cube and the blue cylinder behind the main objects. Model B includes the objects and their colors, but its square framing, conspicuous blurred background lettering, and more stylized look make it less faithful to the prompt. (Second judge pass, order swapped — scores are the average of both: Model A more closely matches the photorealistic tabletop brief and requested 16:9 framing, with the | Anthropic: Claude Fable 5.1: Model A delivers a photorealistic 16:9 tabletop…
Copper foundry hammer swing
A cinematic realist image of a coppersmith in a small architectural-metal workshop captured mid-swing as she drives a raising hammer into a half-formed copper dome, sparks and tiny flakes flying, leather apron twisting, braid whipping sideways, one boot braced on a low sandbag stand, shelves of numbered chasing tools blurred behind her; dramatic low-angle composition with strong motion blur in the hammer arc but a sharp determined face, industrial tungsten light and a faint shaft of daylight from a high window, 16:9.
OpenAI: GPT-6 Luna: Model A more completely matches the requested 16:9 workshop scene, with the coppersmith, half-formed dome on a sandbag stand, flying sparks, numbered tools, and a clear determined face. Model B has a compelling low-angle cinematic feel, but its square crop, softer face, and oversized hammer make it less faithful and technically less convincing. (Second judge pass, order swapped — scores are the average of both: Model A more clearly depicts the coppersmith striking a half-formed dome on a sandbag | Anthropic: Claude Fable 5.1: Model B nails the dramatic low-angle compositio…
Silent tram depot
Film-noir black-and-white scene of a night-shift tram maintenance depot in Brno after rain, with two mechanics in oil-dark coveralls inspecting the undercarriage of a parked cream-and-maroon tram using clipboards and a drop light, puddles reflecting steel columns and overhead cables, deep shadows and crisp highlights, symmetrical wide composition — and the depot yard must contain absolutely no passengers, no commuters, and no bystanders anywhere.
OpenAI: GPT-6 Luna: Model A closely matches the centered, symmetrical wide depot scene, with two mechanics inspecting the tram, overhead cables, and rain-slick reflections; Model B has a strong noir mood but its large foreground obstruction and less balanced framing obscure much of the scene and weaken the requested composition. (Second judge pass, order swapped — scores are the average of both: Model A more fully matches the requested symmetrical wide depot scene, with two mechanics inspecting the tram, reflective | Anthropic: Claude Fable 5.1: Model A delivers the requested symmetrical wide…
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