STEALTHMARK · HEAD TO HEAD

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GPT 5.6 Sol vs MISSINGNO.

GPT 5.6 Sol scores 11.0 points higher overall (49.0 vs 38.0). GPT 5.6 Sol scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

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Model guide ↗

Overall StealthMark

49.0/100
38.0/100

General Intelligence

37.3/100
33.6/100

Visual Intelligence

62.9/100
43.3/100

Newton's Mirror

Same task instructions

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

GPT 5.6 Sol36.8/100

GPT 5.6 Sol: Newton's Mirror SVG benchmark
Researcher observations

The central sphere and paint ordering are supported, but a frontal, centrally converging chamber replaces the required corner perspective. The first wall and floor images have incorrect placement and scale relationships. Sparse reflection cues remain, while continuous outer chains, open lateral sightlines, dense planar light sequences and curved nested spherical imagery are largely missing.

Benchmark task

A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.

MISSINGNO.24.1/100

MISSINGNO.: Newton's Mirror SVG benchmark
Researcher observations

The centered sphere, separate airborne black blob and cyan-above-crimson ordering provide limited valid structure. The colored beads do not establish the required impact and transport histories. One dim floor image supports a small part of the optical system, while the defining wall repetitions, nested sphere imagery and emitter mappings are missing. Rounded volume and some gloss earn material credit, tempered by soft surface appearance and excessive paint-bead scale.

Benchmark task

A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.

Compare category scores
CategoryGPT 5.6 SolMISSINGNO.
State at 600 ms24.0/2511.5/25
Camera and placement6.0/157.0/15
Reflections11.0/12012.0/120
Materials and scale10.0/105.5/10
Floor-damage reward0.0/100.0/10

Selfie

Different task instructions

GPT 5.6 Sol62.5/100

GPT 5.6 Sol: Selfie SVG benchmark
Researcher observations

Six evenly spaced lobes, outward-facing heads and a clear central hexagon establish the requested knot. The ivory silhouette is controlled, but broad crossing bands resemble rigid strips, shading provides limited muscular volume, and repetitive scale lines extend across black loop openings. Small oval heads have readable eyes and mouths but limited anatomical character or moist surface detail.

Benchmark task

A pale serpent woven into an interlocking knot tests connected anatomy, repeated structure and readable overlaps. Organic surface detail must work with the overall geometry.

MISSINGNO.49.7/100

MISSINGNO.: Selfie SVG benchmark
Researcher observations

An appealing purple character with a readable pleased expression and raised-moustache joke. Smooth shading and clean contours support the simple design, but indistinct mitten grips, minimally textured curls and an uncompressed strap weaken the requested physical interaction. The jelly suggests gloss more convincingly than translucency.

Benchmark task

A glossy purple jelly struggles with an oversized fake moustache at a playful checkpoint. The scene tests comic expression, physical contact and the appearance of a soft translucent body.

Compare category scores
CategoryGPT 5.6 SolMISSINGNO.
Task & likeness7.5/105.5/10
Anatomy & construction6.5/104.5/10
Space & placement7.0/106.0/10
Light & reflections5.0/105.5/10
Purposeful detail6.0/104.5/10
Artistry & character6.5/104.5/10
Materials & effects4.5/104.0/10
Visual integrity6.0/106.0/10

Mona Lisa

Different task instructions

GPT 5.6 Sol48.0/100

GPT 5.6 Sol: Mona Lisa SVG benchmark
Researcher observations

The crossed hands, dark dress and winding landscape establish the Mona Lisa composition. Replication is limited by enlarged eyes, an elongated face and a more frontal pose. Broad gradients suggest volume, but outlined features and flattened, overlapping fingers weaken the portrait. The frame and restrained palette unify the image; visible grain adds texture without convincing painterly transitions.

Benchmark task

An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.

MISSINGNO.28.1/100

MISSINGNO.: Mona Lisa SVG benchmark
Researcher observations

Clean contours, connected body forms and gentle gradients support a basic, coherent portrait. Likeness remains weak: the face dominates the body, the seated angle is lost, and crossed hands become dark lobes without traceable wrists or fingers. Readable facial details add some drawing complexity, but clothing, landscape and material treatment remain sparse.

Benchmark task

An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.

Compare category scores
CategoryGPT 5.6 SolMISSINGNO.
Task & likeness4.5/101.5/10
Anatomy & construction4.0/102.5/10
Space & placement5.5/102.5/10
Light & reflections5.0/103.0/10
Purposeful detail5.0/102.0/10
Artistry & character4.5/103.5/10
Materials & effects5.5/102.0/10
Visual integrity6.5/106.0/10

Beach

Different task instructions

GPT 5.6 Sol69.0/100

GPT 5.6 Sol: Beach SVG benchmark
Researcher observations

The purple-to-gold sunset, framing palms and varied beach activities create an appealing, coherent illustration. The sun’s reflection establishes a clear focal path. Figures and animals are recognizable but geometrically simplified; airborne dolphins lack convincing splashes, and the boat reflection is schematic. Clean silhouettes and playful details succeed more strongly than anatomical depth or material realism.

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

MISSINGNO.43.9/100

MISSINGNO.: Beach SVG benchmark
Researcher observations

A coherent sunset beach with clear requested subjects, balanced framing and clean shapes. The aligned solar reflection and warm gradients establish atmosphere. Primitive animal construction, ambiguous furniture, sparse depth cues and minimally developed surfaces limit its drawing complexity and physical richness.

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

Compare category scores
CategoryGPT 5.6 SolMISSINGNO.
Task & likeness8.5/107.0/10
Anatomy & construction6.0/104.0/10
Space & placement7.0/106.5/10
Light & reflections6.5/105.0/10
Purposeful detail7.0/103.0/10
Artistry & character6.5/103.0/10
Materials & effects6.5/105.0/10
Visual integrity8.0/103.5/10

Ground Truth

Same task instructions

GPT 5.6 Sol42.0/100

GPT 5.6 Sol: Ground Truth SVG benchmark
Benchmark task

A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.

MISSINGNO.44.1/100

MISSINGNO.: Ground Truth SVG benchmark
Benchmark task

A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.

Raccoon

Different task instructions

GPT 5.6 Sol65.5/100

GPT 5.6 Sol: Raccoon SVG benchmark
Researcher observations

Expressive faces, bold silhouettes and layered waves make an appealing cartoon. The raccoon sits convincingly behind the dog's shoulders, and the dog's forward paw reaches the steering grip. Steering construction and seated support remain somewhat ambiguous. The glowing sunset lacks a corresponding warm reflection or consistent illumination on the riders.

Benchmark task

A jet-ski scene pairs a canine driver with a raccoon passenger. It tests the placement and contact of interacting subjects, along with vehicle construction.

MISSINGNO.57.5/100

MISSINGNO.: Raccoon SVG benchmark
Researcher observations

The requested interaction reads clearly through recognizable animals, expressive faces and a coherent hull-water relationship. Clean curves and readable accessories give the cartoon polish. Partly unresolved grips and supporting contacts limit physical construction; modest shape complexity, weak directional lighting and schematic water constrain its finish.

Benchmark task

A jet-ski scene pairs a canine driver with a raccoon passenger. It tests the placement and contact of interacting subjects, along with vehicle construction.

Compare category scores
CategoryGPT 5.6 SolMISSINGNO.
Task & likeness7.0/108.0/10
Anatomy & construction6.0/105.0/10
Space & placement7.0/105.5/10
Light & reflections6.5/105.0/10
Purposeful detail7.5/106.0/10
Artistry & character6.0/105.0/10
Materials & effects7.0/104.5/10
Visual integrity6.5/107.0/10

Pelican

Different task instructions

GPT 5.6 Sol68.5/100

GPT 5.6 Sol: Pelican SVG benchmark
Researcher observations

The expressive pelican and balanced coastal composition remain appealing, but a sky-colored slit between the neck contours above the wing leaves the central anatomy incoherent. This visible construction and layering defect prevents a clean-integrity assessment. Clustered feet lack clear pedal contacts and the chain routing is schematic; lighting and water reflections remain graphic.

Benchmark task

A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.

MISSINGNO.58.8/100

MISSINGNO.: Pelican SVG benchmark
Researcher observations

A coherent, cheerful illustration with recognizable pelican features, balanced composition, clean contours and useful small details. Its controlled curves and layered wheels demonstrate competent drawing skill. Ambiguous pedal and steering contacts, sparse drivetrain construction and weak directional lighting limit the riding mechanics and finish.

Benchmark task

A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.

Compare category scores
CategoryGPT 5.6 SolMISSINGNO.
Task & likeness9.0/107.0/10
Anatomy & construction4.5/105.5/10
Space & placement7.5/106.0/10
Light & reflections7.5/105.0/10
Purposeful detail8.0/105.5/10
Artistry & character7.5/106.0/10
Materials & effects7.0/104.5/10
Visual integrity4.5/106.5/10