Head to head: FLUX 2 vs OpenAI: GPT-5.4 Image 2
FLUX 2 vs OpenAI: GPT-5.4 Image 2
By Ryan Merket · Published
A head-to-head across image prompts that test scene detail, exact counts, object relationships, framing, and adherence to constraints. The comparison focuses on where each model follows the brief—and where polished imagery still misses a requested detail.
OpenAI: GPT-5.4 Image 2 takes the saved verdict, with aggregate scores of **67.1** to FLUX 2’s **58.5**. The task record is 5 wins for OpenAI, 2 for FLUX 2, and 1 tie; the editorial strength is **Clear result (not statistical)**. OpenAI’s edge comes from scenes where completeness and legibility matter: the watchmaker’s face and tweezer work are clearer, the no-mouse workstation includes more of the specified hardware, and the courier drone’s brake-turn and branding read more convincingly. It also wins exact counting, though both outputs show seven cups. FLUX 2’s best case is composition. It more consistently delivers the requested 16:9 framing, and wins on the cozy nook with forbidden items excluded and on the tabletop’s object placement. OpenAI’s square framing repeatedly costs it fidelity—even in images with strong detail—and the perspective task is a tie, not a clean win for either model. This assessment applies to the saved task sample, not image generation in general. **Final call: OpenAI: GPT-5.4 Image 2 wins this matchup on more complete scene execution; FLUX 2 remains the more dependable choice in this sample when the specified wide frame or precise layout is the priority.**
Watchmaker with microtool
A young watchmaker-engineer seated at an anti-static bench, carefully replacing a sensor ribbon inside a transparent modular smartwatch called "Nexa Tile"; both hands are fully visible in the foreground with anatomically correct fingers, natural knuckle bends, believable thumb placement, and clean nail detail as one hand steadies the watch and the other uses a fine ceramic tweezer; realistic human proportions, relaxed shoulders, clear face in three-quarter view, cool task lighting from an articulated lamp, shallow depth of field, photorealistic studio image, 16:9.
OpenAI: GPT-6 Luna: Model B more clearly shows the watchmaker’s face, both hands, and the careful tweezer work, with readable Nexa Tile branding and a polished workshop setting. Model A better matches the requested 16:9 framing and cool lighting, but the face is cropped and the repair action is less clearly presented. (Second judge pass, order swapped — scores are the average of both: Model B more completely matches the requested scene, with a clear three-quarter face, both hands visible, a transparent watch, fine | Anthropic: Claude Fable 5.1: Model B hits far more of the brief—clear three-q…
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 matches the requested 16:9 framing and has clear one-point perspective, but Model B is sharper and more convincing in its warm lighting, shelf detail, and consistent sense of scale. Model B is square rather than 16:9, which keeps it from being a stronger match overall. (Second judge pass, order swapped — scores are the average of both: Model A better matches the requested 16:9 framing while maintaining a clear, centered one-point perspective, receding shelves, and warm overhead lighting. | Anthropic: Claude Fable 5.1: Model A delivers the requested 16:9 frame with…
Exact counting
A clean overhead flat lay on white marble of EXACTLY seven identical espresso cups arranged in a single straight row, each clearly separate and individually countable, even soft lighting, 16:9.
OpenAI: GPT-6 Luna: Model A presents exactly seven clearly separated cups in a straight row and matches the requested 16:9 overhead marble flat lay. Model B also has seven cups, but its square format and low placement with extensive empty space weaken the composition. (Second judge pass, order swapped — scores are the average of both: Model B presents seven very consistent, clearly separated cups in a straight row, but its square framing misses the requested 16:9 format. Model A matches the wide format and count, t | Anthropic: Claude Fable 5.1: Both show exactly seven countable espresso cups…
No-mouse workstation
An isometric 3D render of a minimalist programmer’s workstation for a robotics startup: ultrawide monitor showing a hex-grid diagnostics dashboard, split ergonomic keyboard, compact trackpad built into the desk, soldering microscope, cable management tray, tiny desk plant, and a brushed aluminum mini-PC labeled "Aster Node"; morning window light casts long diagonal shadows across a pale oak surface, clean restrained palette, precise materials, and the desk must contain NO mouse and NO stylus anywhere in the scene, 16:9.
OpenAI: GPT-6 Luna: Model B includes more of the requested specifics, especially the split keyboard, built-in desk trackpad, cable tray, and clearly labeled mini-PC, while Model A better matches the isometric 16:9 presentation. Model B’s square framing and busier background detract slightly, but its overall adherence is stronger. (Second judge pass, order swapped — scores are the average of both: Model B includes the requested split keyboard, recessed desk trackpad, cable tray, microscope, plant, and labeled mini-P | Anthropic: Claude Fable 5.1: Model B nails nearly every listed element—clear…
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 follows the requested 16:9 format and includes the cozy chair, books, tea, window light, and none of the forbidden items. Model B is beautifully lit and also avoids the forbidden items, but its square framing misses the requested aspect ratio. (Second judge pass, order swapped — scores are the average of both: Model B is beautifully lit and includes all requested nook elements without any prohibited objects, but its square format misses the requested 16:9 framing. Model A matches the wid | Anthropic: Claude Fable 5.1: Model A delivers the requested 16:9 frame with…
Memphis repair kiosk
A compact sidewalk electronics-repair kiosk at dawn rendered in unmistakable 1980s Memphis design style: playful geometric laminates, squiggles, terrazzo-like pastel surfaces, bold cyan-magenta-yellow-black accents, asymmetrical cabinets, and a striped awning labeled "PatchPort 17"; a transparent display case holds neatly arranged old pagers and translucent phone shells, while a technician’s stool and soldering mat sit under a soft peach sunrise, viewed in a clean three-quarter composition with crisp shadows, high style fidelity, 16:9.
OpenAI: GPT-6 Luna: Model A more closely matches the requested compact 16:9 three-quarter kiosk, with accurate PatchPort 17 lettering, a striped awning, pastel geometric laminates, displayed pagers and phone shells, and a clear repair workspace. Model B is richly detailed and stylish, but its square framing and extra storefront signage make it less faithful to the requested composition. (Second judge pass, order swapped — scores are the average of both: Model B delivers a richer, more convincing repair kiosk with t | Anthropic: Claude Fable 5.1: Model A delivers the requested 16:9 frame, a cl…
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 more closely matches the requested 16:9 tabletop arrangement, with the duck on the green cube and the glossy red sphere to its right; the blue cylinder is partly obscured behind them. Model B is more polished and shows the cylinder more clearly, but its square format misses the specified aspect ratio and its cube looks less matte. (Second judge pass, order swapped — scores are the average of both: Model A follows the requested 16:9 format and places the duck on the cube, with the red sph | Anthropic: Claude Fable 5.1: Model A satisfies every constraint—correct 16:9…
Courier drone brake-turn
A delivery quadcopter marked "LatticeLoop" whipping through a narrow alley between solar-clad apartment towers, captured mid-brake-turn as one parcel bay swings open and a tiny padded envelope ejects toward a balcony locker; rotor wash scatters orange jacaranda petals and loose thermal receipts into spiraling arcs, motion blur streaks the propellers, reflections ripple across wet pavement, and the low camera angle plus hard noon sunlight create a vivid sense of speed and dynamic energy, cinematic 16:9.
OpenAI: GPT-6 Luna: Model B delivers a stronger low-angle brake-turn, with convincing rotor blur, a readable “LatticeLoop” mark, and richly detailed wet alley; its square framing and less explicit balcony delivery miss part of the prompt. Model A better matches the requested 16:9 framing and shows parcels flying toward a balcony, but its motion feels more stylized and less convincing. (Second judge pass, order swapped — scores are the average of both: Model B more clearly delivers the low-angle brake-turn, readable | Anthropic: Claude Fable 5.1: Model B delivers correct 'LatticeLoop' text, mo…
Matchup powered by OpenRouter.