STEALTHMARK · HEAD TO HEAD

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GPT 5.6 Sol vs Muse Wonder

Muse Wonder leads GPT 5.6 Sol by 1.8 points on StealthMark, 57.2 to 55.4. It leads on 7 of 9 benchmarks and GPT 5.6 Sol on 2, including both games. Muse Wonder scores higher on Ground Truth.

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All results ↗
All results ↗

Overall StealthMark

55.4/100Overall rank 11/50
57.2/100Overall rank 10/50

General Intelligence

52.0/100
53.2/100

Visual Intelligence

61.7/100
64.5/100

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT 5.6 Sol
  • Muse Wonder
  • Other models
  • Median

Planning and learning across maze levels. Collect coins while avoiding ghosts. Ghosts move before the player each turn, and collisions cost a life. 3 levels in sequence, up to 66 turns in total. Earlier moves and outcomes carry forward, testing learning across levels.

GPT 5.6 Sol62.9/100Rank 8/43

Survived 1 of 3 levels
Foresight: complete playing field
Level 311 ptsTurn 17 / 20

Muse Wonder52.3/100Rank 15/43

Survived 0 of 3 levels
Foresight: complete playing field
Level 311 ptsTurn 17 / 20

Points per level

LevelGPT 5.6 SolMuse Wonder
Level 1Second Thoughts
27 ptsSurvived
16 ptsOut of lives
Level 2Pressure Pot
10 ptsOut of lives
10 ptsOut of lives
Level 3Hide or Flight
11 ptsOut of lives
11 ptsOut of lives

Cooperative planning across puzzle levels. Coordinate two robots to push numbered cores onto matching sockets. Pressure plates hold doors open; moving either robot uses one turn. 5 levels in sequence, up to 152 turns in total. Earlier moves and outcomes carry forward, testing learning across levels.

GPT 5.6 Sol83.6/100Rank 5/43

Cleared 5 of 5 levels
Latch: complete playing field
Level 520.6 ptsTurn 27 / 40

Muse Wonder67.0/100Rank 16/43

Cleared 5 of 5 levels
Latch: complete playing field
Level 520.6 ptsTurn 27 / 40

Points per level

LevelGPT 5.6 SolMuse Wonder
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
10.2 ptsClearedFinished early · 1 beacon left
9 ptsCleared
Level 3Relay vault
18.8 ptsCleared
18.8 ptsCleared
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
17.8 ptsClearedFinished early · 1 beacon left
Level 5Second thoughts
20.6 ptsCleared
20.6 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

GPT 5.6 Sol

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.

Muse Wonder

The flattened cyan cap, separate airborne black blob and crimson droplets support much of the contact sequence, although crimson adhesion and forward carriage remain unresolved. Main-sphere placement is broadly compatible with the prescribed view. Sparse isolated mirror images replace the defining repeated room structure and curved nested reflections. The crimson mass is visibly oversized, and the top-center lamp image is missing.

Score breakdown

CategoryGPT 5.6 SolMuse Wonder
State at 600 ms24.0/2522.0/25
Camera and placement6.0/1512.0/15
Reflections11.0/12021.5/120
Materials and scale10.0/107.0/10
Floor-damage reward0.0/100.0/10

Benchmark task

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

Selfie

Different task instructions

Visual construction and creative interpretation.

The judgment

GPT 5.6 Sol

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.

Muse Wonder

An appealing, coherent cartoon with a readable effortful expression and clear forefeet gripping the trunk. Soft colours and controlled contours support its tenderness. Smooth ears, stiff foreleg construction, limited surface texture and uncertain seed contact keep the execution below intricate illustration quality.

Score breakdown

CategoryGPT 5.6 SolMuse Wonder
Task & likeness7.5/107.5/10
Anatomy & construction6.5/107.0/10
Space & placement7.0/107.5/10
Light & reflections5.0/107.0/10
Purposeful detail6.0/107.5/10
Artistry & character6.5/106.5/10
Materials & effects4.5/106.5/10
Visual integrity6.0/108.0/10

Benchmark task

GPT 5.6 Sol

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.

Muse Wonder

A small elephant protecting a delicate seed tests expressive anatomy, physical contact and contrasting organic materials.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

GPT 5.6 Sol

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.

Muse Wonder

A competent illustrative interpretation with controlled curves, readable details and coherent depth layers. Facial, hair and garment shading demonstrate more development than basic construction. Replication remains limited by the frontal pose, elongated face and pronounced smile; crowded fingers, weak contact shadows and smooth materials constrain anatomical and painterly conviction.

Score breakdown

CategoryGPT 5.6 SolMuse Wonder
Task & likeness4.5/105.5/10
Anatomy & construction4.0/105.5/10
Space & placement5.5/105.5/10
Light & reflections5.0/105.5/10
Purposeful detail5.0/105.5/10
Artistry & character4.5/105.5/10
Materials & effects5.5/105.0/10
Visual integrity6.5/106.5/10

Benchmark task

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

Beach

Different task instructions

Creativity, perspective and visual beauty.

The judgment

GPT 5.6 Sol

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.

Muse Wonder

A lively beach illustration with expressive animals, controlled colour transitions and unusually readable accessories. Connected graphic forms make the activities recognizable. Crowded overlaps, compressed depth, schematic joints, weak directional shadows and limited material variation constrain its physical coherence and refinement.

Score breakdown

CategoryGPT 5.6 SolMuse Wonder
Task & likeness8.5/108.5/10
Anatomy & construction6.0/106.0/10
Space & placement7.0/106.5/10
Light & reflections6.5/106.5/10
Purposeful detail7.0/109.0/10
Artistry & character6.5/107.0/10
Materials & effects6.5/106.0/10
Visual integrity7.0/107.0/10

Benchmark task

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

Ground Truth

Same task instructions

Physical reasoning, light and visual reconstruction.

The judgment

GPT 5.6 Sol

This benchmark has not been assessed yet.

Muse Wonder

This benchmark has not been assessed yet.

Benchmark task

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

Raccoon

Different task instructions

Scene composition and interacting subjects.

The judgment

GPT 5.6 Sol

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.

Muse Wonder

An expressive, coherent cartoon demonstrates the requested riding and steering interaction. Clean contours, differentiated accessories and energetic spray support its appeal. Concealed seated contacts, compressed vehicle perspective and weak directional lighting limit physical resolution despite the detailed presentation.

Score breakdown

CategoryGPT 5.6 SolMuse Wonder
Task & likeness7.0/108.0/10
Anatomy & construction6.0/106.5/10
Space & placement7.0/106.5/10
Light & reflections6.5/104.5/10
Purposeful detail7.5/107.5/10
Artistry & character6.0/106.5/10
Materials & effects7.0/107.0/10
Visual integrity6.5/107.0/10

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.

Pelican

Different task instructions

Subject construction and spatial relationships.

The judgment

GPT 5.6 Sol

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.

Muse Wonder

A controlled, expressive seaside illustration with a distinctive pelican, coherent bicycle geometry and successfully resolved graphic detail. Visible pedal support and plausible occlusion strengthen the riding construction. Aligned wheels and layered scenery establish placement. Limited cast shadows, simplified leg articulation and restrained material modeling constrain its physical finish.

Score breakdown

CategoryGPT 5.6 SolMuse Wonder
Task & likeness9.0/108.5/10
Anatomy & construction4.5/106.0/10
Space & placement7.5/107.5/10
Light & reflections7.5/105.5/10
Purposeful detail8.0/108.5/10
Artistry & character7.5/107.5/10
Materials & effects7.0/106.0/10
Visual integrity4.5/108.0/10

Benchmark task

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