STEALTHMARK · HEAD TO HEAD

All comparisons ↗

MISSINGNO. vs LongCat-2.0

MISSINGNO. scores 12.4 points higher overall (38.0 vs 25.6). MISSINGNO. scores higher on Ground Truth.

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Model guide ↗
Model guide ↗

Overall StealthMark

38.0/100
25.6/100

General Intelligence

33.6/100
16.6/100

Visual Intelligence

43.3/100
36.4/100

Newton's Mirror

Same task instructions

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

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.

LongCat-2.021.9/100

Owl Alpha: Newton's Mirror SVG benchmark
Researcher observations

Cyan lies on the sphere's facing middle rather than showing its recent interaction near the apex. Separate airborne black and elongated crimson support part of the timing sequence. Small side images and an overlapping lower image provide limited reflection ordering, but recursive room structure, nested imagery and emitter mappings are largely absent. The main sphere is smaller and higher in the frame than prescribed, and the surfaces have a soft, matte appearance.

Benchmark task

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

Compare category scores
CategoryMISSINGNO.LongCat-2.0
State at 600 ms11.5/259.5/25
Camera and placement7.0/156.5/15
Reflections12.0/12010.0/120
Materials and scale5.5/105.5/10
Floor-damage reward0.0/100.0/10

Selfie

Different task instructions

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.

LongCat-2.061.6/100

Owl Alpha: Selfie SVG benchmark
Researcher observations

Amber slit eyes, a pointed beak, cream feathers and gold-trimmed black clothing establish the secretive owl rogue. The head appears frontal rather than lowered, with much of the face exposed. The centered silhouette is effective, but stiff cloak geometry, shallow facial modeling and extremely dark clothing limit depth and finish. Sparse gold markings suggest the requested circuitry only loosely.

Benchmark task

A cloaked owl with luminous eyes tests expression, fabric folds and the separation of dark forms.

Compare category scores
CategoryMISSINGNO.LongCat-2.0
Task & likeness5.5/107.0/10
Anatomy & construction4.5/106.0/10
Space & placement6.0/106.0/10
Light & reflections5.5/105.5/10
Purposeful detail4.5/106.0/10
Artistry & character4.5/106.5/10
Materials & effects4.0/105.5/10
Visual integrity6.0/106.5/10

Mona Lisa

Same task instructions

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.

LongCat-2.04.1/100

Owl Alpha: Mona Lisa SVG benchmark
Researcher observations

The centered portrait, slight smile, overlapping hands and distant landscape suggest Mona Lisa, but replication is weak. The face has little volume, the shoulders and torso form a narrow wedge, and the hands are fingerless ovals with unresolved wrists. Broad gray background bands provide limited depth. A bright head rim and pale hands contrast with an almost featureless dark figure.

Benchmark task

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

Compare category scores
CategoryMISSINGNO.LongCat-2.0
Task & likeness1.5/100.5/10
Anatomy & construction2.5/100.5/10
Space & placement2.5/100.5/10
Light & reflections3.0/100.5/10
Purposeful detail2.0/100.0/10
Artistry & character3.5/100.5/10
Materials & effects2.0/100.0/10
Visual integrity6.0/100.5/10

Beach

Different task instructions

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.

LongCat-2.054.4/100

Owl Alpha: Beach SVG benchmark
Researcher observations

The sunset, palms, birds and beach animals create a cheerful, readable scene. Clean silhouettes and a vivid sky establish the composition, but construction remains schematic. The right palm appears rooted in open water, shadows have limited connection to the sunset, and the sun’s reflection consists of rigid bands. Small creatures and beach equipment are recognizable but minimally developed.

Benchmark task

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

Compare category scores
CategoryMISSINGNO.LongCat-2.0
Task & likeness7.0/107.5/10
Anatomy & construction4.0/105.5/10
Space & placement6.5/105.5/10
Light & reflections5.0/106.0/10
Purposeful detail3.0/105.0/10
Artistry & character3.0/105.0/10
Materials & effects5.0/103.0/10
Visual integrity3.5/104.0/10

Ground Truth

Same task instructions

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.

LongCat-2.011.6/100

Owl Alpha: 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

Same task instructions

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.

LongCat-2.045.3/100

Owl Alpha: Raccoon SVG benchmark
Researcher observations

The raccoon is recognizable and expressive, with a clear mask and striped tail. The dog's anatomy is poorly resolved, and the flattened craft lacks convincing steering and seating. Feet extend below the hull, weakening the sense of support. An appealing palette, clean shapes and decorative water effects give the illustration some polish.

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
CategoryMISSINGNO.LongCat-2.0
Task & likeness8.0/105.5/10
Anatomy & construction5.0/103.0/10
Space & placement5.5/104.5/10
Light & reflections5.0/105.0/10
Purposeful detail6.0/105.5/10
Artistry & character5.0/103.0/10
Materials & effects4.5/105.5/10
Visual integrity7.0/107.0/10

Pelican

Different task instructions

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.

LongCat-2.079.0/100

Owl Alpha: Pelican SVG benchmark
Researcher observations

A clearly recognizable pelican cycles through a well-composed coastal sunset. Warm colors, flowing scarf, feather contours and bicycle details give the illustration character. The legs connect to the body, but the farther foot's pedal contact and the wing's handlebar grip remain ambiguous. Clean vector shapes provide polish, with limited material texture and directional shading.

Benchmark task

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

Compare category scores
CategoryMISSINGNO.LongCat-2.0
Task & likeness7.0/108.5/10
Anatomy & construction5.5/107.0/10
Space & placement6.0/108.0/10
Light & reflections5.0/107.5/10
Purposeful detail5.5/108.0/10
Artistry & character6.0/108.5/10
Materials & effects4.5/107.0/10
Visual integrity6.5/108.5/10