FLUX 3 Image Klein vs GPT Image 2.5 Sunburst

29 identical prompts, default settings, blind community votes. Head-to-head: 30% preferred FLUX 3 Image Klein, 70% preferred GPT Image 2.5 Sunburst, 0 ties, 10 votes.

FLUX 3 Image Klein and GPT Image 2.5 Sunburst have met in 10 blind head-to-head votes on 29 identical prompts in the BudgetPixel AI Image Arena. GPT Image 2.5 Sunburst was preferred in 70% of them and FLUX 3 Image Klein in 30%, with 0 ties — a narrow lead that more votes could still overturn. FLUX 3 Image Klein was faster, at 6.4s median per image against 47.9s for GPT Image 2.5 Sunburst.

• “Across a brushed steel counter, exactly six fountain pens rest in three groups: two crimson pens on the left, two ivory pens in the center, and two cobalt pens on the right; nothing else.”Prompt adherence

  

  

• “Exactly four enamel camping cups form a vertical tower on a pale wooden shelf, bottom to top: red, yellow, blue, white; all handles face right. Soft morning light, nothing else.”Prompt adherence

  

  

• “Realistic. Three scenes in one. 1) A room filled with many types of candy. 2) A room filled with many kinds of animals. 3) A room filled with all kinds of money. Above each room, a list names what is inside.”Prompt adherence

  

  

• “An image representing the word and concept of “Relaxing.” There are at least 4 moments that represent this. The word “Relax” and another word representing it are hidden naturally in the background.”Prompt adherence

  

  

• “Across a sheltered coastal inlet, a contemporary high-tech cable-stayed bridge spans between granite shores, its slender steel pylons and pale concrete deck catching cool sunrise light; viewed from a rocky bank, straight lines and credible engineering define the scene.”Architecture & interiors

  

  

• “German bunker complex on the French Atlantic coast during World War II”Architecture & interiors

  

  

• “Beyond dry orchard rows, a Pueblo Revival adobe house settles into the desert foothills, with timber lintels and a muted clay roof; warm late-afternoon light, viewed from a rocky rise, reveals clean geometry and credible construction.”Architecture & interiors

  

  

• “A miniature, intricately detailed fox crafted from living constellations, curled asleep atop a crescent moon. Surrounding it are delicate, bioluminescent flowers that pulse with gentle light, casting intricate shadows. The background is a deep indigo sky filled with swirling nebulae and distant, twinkling stars. The overall aesthetic is dreamlike and whimsical, with a painterly finish and a touch of cosmic wonder.”Concept art & fantasy

  

  

• “A celestial fox made of stardust and nebulae, carrying a satchel overflowing with glowing cosmic jewels, journeys through an ethereal dreamscape. Swirling galaxies and bioluminescent flora fill the background. The scene is rendered in a surreal, photorealistic style, emphasizing intricate details and a sense of infinite wonder.”Concept art & fantasy

  

  

• “Cinematic, photorealistic artwork of a sorrowful young woman in a flowing ivory lace dress kneels in shallow surf at the waterline during sunset. Her long, windblown dark hair frames her downcast face; a tear flows down her cheek and into the water, one hand presses against her chest, glowing faintly crimson to suggest her still-beating heart, while her other fingertips touch the water. The world behind her remains beautiful: a golden sun shines over restless waves, seabirds cross the sky, and fiery peach clouds fade into star-filled indigo. In the wet sand, her reflection becomes a dark cosmic void. Stars ripple around a fading, ghostlike image of her partner deserting her and dissolving into darkness. The tear forms concentric ripples, disturbing an entire universe. Contrast warm golden life above with cool blue-black devastation below. Natural cinematic lighting, detailed water reflections, realistic anatomy, restrained grief. No text, borders, or collage.”Concept art & fantasy

  

  

• “A colossal ancient bear, its fur woven with moss and starlight, stands at the edge of a shimmering, otherworldly forest. The trees are made of crystal and emit a soft, ethereal glow. In the distance, a nebula swirls in the twilight sky. The scene is rendered in a fantasy art style, with surrealist elements and cinematic lighting that emphasizes the majestic scale of nature.”Concept art & fantasy

  

  

• “Along a garden path at violet dusk, an adult man in a midnight-green dinner suit adjusts one cuff beneath warm lantern glow, caught in a quiet pre-event pause with glossy leaves and elegant magazine polish.”Glamour

  

  

• “Moonlight washes a snowbound high plateau beneath sharp stars, while dry flurries cross the midnight air; frost feathers the foreground tussocks, and dark, rolling ridgelines recede into a blue-black distance.”Landscape & nature

  

  

• “After a passing squall, a waterfall drops through a narrow basalt gorge at dusk, its white plume breaking against dark ledges; rain-beaded moss and sharp foreground stones lead toward cliffs fading behind drifting spray.”Landscape & nature

  

  

• “At dawn on a rugged basalt shore, a tide pool mirrors clearing rain clouds; translucent water reveals rippled sand, barnacle-crusted rock, and blurred kelp below the surface, with slick foreground stone leading toward hazy coastal cliffs.”Landscape & nature

  

  

• “Realistic. Four scenes in one. 1) A pretty Japanese woman, about 19–23 years old, in cat-type cosplay at an anime convention. 2) An old German man or woman, about 60–65 years old, finally having a breakthrough that would change the world. 3) A happy, mixed-race, 21-year-old female or male hacker checking their bank account, which has many zeros, with a bundle of cash near their PC. 4) A happy moment that would make you smile.”Photorealism

  

  

• “A man is pushing his car, which is stuck in the mud, amid heavy rain in the countryside. The sky is gloomy, and some hail is also falling on the car and the ground. The big man has mud all over his trousers. Show him struggling.”Photorealism

  

  

• “A realistic scene of an Indian wedding showing the emotions of the adult bride and her adult family members”Photorealism

  

  

• “Wind lifts the hem of a charcoal wool coat as an adult man in his late 40s keeps a pensive gaze. The portrait frames him against a windswept coastal bluff beneath cool, cloud-filtered daylight.”Portrait & fashion

  

  

• “Under a narrow window beam, an adult woman in her late 50s wears a sculpted wool cape over a cotton blouse; her wry expression rests against a charcoal plaster backdrop in a black-and-white portrait, shaped by soft angled light.”Portrait & fashion

  

  

• “With a violin tucked close, an adult man in his early 50s draws a bow, his hands prominent, wearing a charcoal silk shirt; his intent expression is framed against a warm umber backdrop in soft amber window light, in a close portrait photograph.”Portrait & fashion

  

  

• “Across a basalt terrace, an adult woman in her early forties poses in a full-length fashion photograph, wearing a pleated indigo silk dress and cropped linen jacket, her composed half-smile lit by hard afternoon sunlight from one side against a pale limestone ridge.”Portrait & fashion

  

  

• “An unbranded, unmarked faceted optical-glass paperweight rests on charcoal slate against a pale blue-gray background; broad diffused studio light and a narrow side highlight reveal crisp internal refractions and bright edge reflections.”Product & commercial

  

  

• “A slim, unbranded sparkling-water can of brushed aluminum, beaded with condensation, stands on a pale terrazzo surface against a seamless electric-blue background; broad overhead diffusion and a crisp side strip create clean highlights, with no lettering or graphics.”Product & commercial

  

  

• “A folded unbranded merino cardigan rests on a honed limestone plinth, its chunky ribbed wool surface softly catching broad overhead diffusion and warm side bounce against a muted clay backdrop, with no tags, lettering, or graphics.”Product & commercial

  

  

• “Under a broad diffused key and cool edge light, an unbranded frosted-glass serum bottle displays clear golden oil against a muted plum background, resting on honed pale travertine with its blank surface free of lettering.”Product & commercial

  

  

• “Rain beads on a bicycle repair shop’s blue awning, with wheels and brass tools visible behind the glass; “IRON PETAL” is lettered in warm yellow enamel capitals across the wooden fascia.”Typography

  

  

• “A brass luggage tag hangs from a weathered sea chest in a harbor loft, its face bearing “MIST HARBOR” in deeply stamped blue capitals; ropes and salt-crusted fittings surround it, with no other writing visible.”Typography

  

  

• “At midnight, moths circle the laundromat’s glowing round windows while chrome washing machines gleam inside; “MOONTHREAD PARADE” shines in icy blue neon above the entrance, reflected across the wet pavement, with no other lettering visible.”Typography