STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT 5.5 vs GPT 6 Sol

GPT 6 Sol scores 11.0 points higher overall (53.0 vs 42.0). GPT 6 Sol scores higher on Selfie, with its largest category advantage in prompt & likeness.

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All results ↗

Overall StealthMark

42.0/100
53.0/100

General Intelligence

26.2/100
32.0/100

Visual Intelligence

53.4/100
68.3/100

Newton's Mirror

Same prompt

Physics, perspective and recursive reflections, tested together. Explore the test ↗

GPT 5.520.8/100

GPT 5.5: Newton's Mirror SVG benchmark
Researcher observations

The paint ordering and separate black bead support part of the physical state, but adhesion and rotational transport remain only partly established. The sweeping cyan arc and long crimson lobes do not clearly communicate the limited time since their respective impacts. The main sphere is too large and too low, and the black bead is below its required projected position. Displaced isolated sphere images, a flattened floor echo and missing recursive, nested and emitter reflections provide little coherent optical structure. The colored paint is excessively bulky for the specified quantities.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

GPT 6 Sol25.3/100

GPT 6 Sol: Newton's Mirror SVG benchmark
Researcher observations

The centered sphere, separate airborne black form and color ordering support scene recognition. Rounded shading and curved rims provide readable volume and gloss. Shrinking side images, a floor counterpart and curved lamp highlights provide isolated reflection cues, but broad bands and sparse repetitions leave nested room imagery, outer chains and ordered emitter mapping unsupported. Vertical framing departs from the prescribed view, while paint contact, transport and solid-metal appearance remain weak or uncertain.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryGPT 5.5GPT 6 Sol
State at 600 ms19.5/2519.0/25
Camera and placement7.0/1512.0/15
Reflections5.0/1208.0/120
Materials and scale6.0/106.5/10
Floor-damage reward0.0/100.0/10

Selfie

Same prompt

GPT 5.542.8/100

GPT 5.5: Selfie SVG benchmark
Researcher observations

Six pale, scaled lobes form a balanced radial arrangement, but they remain separate capsules rather than an interlocking serpent knot. There are no crossings, alternating overlaps, or crisp inner bends; the central hexagon is an isolated outline. Small outward-facing heads sit within the lobes without integrated necks. Soft shading and tidy contours provide some finish, while repetitive oval scales and cartoon faces limit organic credibility.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

GPT 6 Sol65.8/100

GPT 6 Sol: Selfie SVG benchmark
Researcher observations

Six evenly spaced lobes, small outward-facing heads and a regular hexagonal opening make the motif immediately readable. The central angular band merges several intersections, weakening the alternating weave. Pale shading gives modest volume, but scales are sparse and repetitive, crossing shadows are weak, and the heads have limited anatomical definition.

Prompt withheld

This prompt is held back to prevent benchmaxxing.

Compare category scores
CategoryGPT 5.5GPT 6 Sol
Prompt & likeness2.5/107.5/10
Anatomy & construction3.0/106.5/10
Space & placement5.0/106.5/10
Light & reflections5.0/106.0/10
Purposeful detail4.5/106.0/10
Artistry & character4.5/107.0/10
Materials & effects4.5/105.5/10
Visual integrity7.0/106.5/10

Beach

Same prompt

GPT 5.563.3/100

GPT 5.5: Beach SVG benchmark
Researcher observations

The sunset, palms, birds, playful animals and ball clearly establish the requested beach scene. Warm sky gradients and clean silhouettes make it appealing. Animal construction remains basic, especially the round-eared foreground figure's unclear torso and limbs. The dolphin lacks a convincing splash, and broad reflection bands suggest sunset light without resolving its behavior on water.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections Make it a masterpiece, no tools allowed

GPT 6 Sol76.0/100

GPT 6 Sol: Beach SVG benchmark
Researcher observations

A cohesive, appealing beach illustration with framing palms, a warm sunset and a clear reflection path. The turtle, crab, birds and beach ball fulfill the playful brief. Clean silhouettes and restrained colors work well, while simplified anatomy, shallow spatial cues and inconsistent foreground shadows limit depth and finish.

Exact prompt

Create an SVG of a amazing beach scene. Sunset, animals, fun, birds, reflections Make it a masterpiece, no tools allowed

Compare category scores
CategoryGPT 5.5GPT 6 Sol
Prompt & likeness8.0/108.5/10
Anatomy & construction5.5/107.5/10
Space & placement6.0/107.0/10
Light & reflections6.0/107.0/10
Purposeful detail5.0/107.0/10
Artistry & character6.5/108.0/10
Materials & effects5.0/106.5/10
Visual integrity8.0/108.5/10

Mona Lisa

Same prompt

GPT 5.552.5/100

GPT 5.5: Mona Lisa SVG benchmark
Researcher observations

The dark veil, restrained smile, crossed hands and muted landscape establish Mona Lisa references. Replication is limited by the oversized frontal face, simplified eyes and hands drawn as overlapping tapered shapes without fingers. Clean contours and a balanced frame support the composition, but broad landscape bands, sparse garment detail and shallow shading leave the portrait basic rather than masterful.

Exact prompt

Replicate mona-lisa as SVG Make it a masterpiece, no tools allowed

GPT 6 Sol53.5/100

GPT 6 Sol: Mona Lisa SVG benchmark
Researcher observations

The dark clothing, crossed arms, restrained smile and distant landscape establish the Mona Lisa reference. Replication is limited by the oversized, nearly frontal head, schematic eyes and fingerless hand shapes. Soft shading suggests facial volume, but muddy transitions and angular scenery weaken depth and painterly finish.

Exact prompt

Replicate mona-lisa as SVG Make it a masterpiece, no tools allowed

Compare category scores
CategoryGPT 5.5GPT 6 Sol
Prompt & likeness6.0/106.0/10
Anatomy & construction4.5/104.5/10
Space & placement5.5/105.5/10
Light & reflections5.0/106.0/10
Purposeful detail3.5/104.0/10
Artistry & character5.5/105.5/10
Materials & effects4.0/105.0/10
Visual integrity7.5/106.5/10

Raccoon

Same prompt

GPT 5.556.0/100

GPT 5.5: Raccoon SVG benchmark
Researcher observations

The raccoon's masked face, bright hull and sweeping wake make the scene readable and lively. The dog is much less resolved: its head is ambiguous, overlapping brown forms obscure its anatomy, and its paws do not visibly grip the controls. Smooth shapes and cheerful colors provide appeal, but weak steering construction and limited depth keep the drawing uneven.

Exact prompt

Generate an SVG: A raccoon sits on a dog's back while the dog steers a jet ski Make it a masterpiece, no tools allowed

GPT 6 Sol78.0/100

GPT 6 Sol: Raccoon SVG benchmark
Researcher observations

The raccoon rides the dog's back, and the dog's connected foreleg reaches the steering grip. Expressive faces, a cohesive palette and sweeping wake make an appealing illustration. Vehicle construction and seating remain simplified; broad splash ribbons convey speed more convincingly than physical displacement. The sun has little corresponding reflection or effect on the subjects.

Exact prompt

Generate an SVG: A raccoon sits on a dog's back while the dog steers a jet ski Make it a masterpiece, no tools allowed

Compare category scores
CategoryGPT 5.5GPT 6 Sol
Prompt & likeness6.0/108.5/10
Anatomy & construction4.0/107.5/10
Space & placement6.0/108.0/10
Light & reflections5.5/106.0/10
Purposeful detail5.5/108.0/10
Artistry & character6.5/108.0/10
Materials & effects5.5/107.5/10
Visual integrity6.5/108.5/10

Pelican

Benchmax control

Outside General and Visual Intelligence.

GPT 5.564.3/100

GPT 5.5: Pelican SVG benchmark
Researcher observations

The oversized bill, bright bicycle and sunset create an appealing, recognizable cartoon. Riding mechanics are less convincing: the wing has no clear steering contact, leg attachments are uneven, and feet do not visibly engage pedals. A dark notch complicates the rear neck junction. Clean contours and orderly spokes provide polish, while simplified anatomy and lighting limit depth.

Exact prompt

Generate an SVG of a pelican riding a bicycle Make it a masterpiece, no tools allowed

GPT 6 Sol80.3/100

GPT 6 Sol: Pelican SVG benchmark
Researcher observations

The pelican reads clearly, with an expressive face, generous bill and appealing pastel composition. Spokes, basket weave and feather contours are carefully organized. Both legs connect to the body, though joint definition and pedal contacts are simplified. Consistent wheel placement and a ground shadow establish support; restrained shading gives limited volume.

Exact prompt

Generate an SVG of a pelican riding a bicycle Make it a masterpiece, no tools allowed

Compare category scores
CategoryGPT 5.5GPT 6 Sol
Prompt & likeness7.5/109.0/10
Anatomy & construction4.5/107.5/10
Space & placement6.5/108.0/10
Light & reflections6.5/107.0/10
Purposeful detail6.0/108.0/10
Artistry & character7.5/108.5/10
Materials & effects6.0/107.0/10
Visual integrity7.5/108.5/10