Claude Sonnet 5.5 59.6/100Rank 11/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Claude Sonnet 5.5 leads Muse Wonder by 13.2 points on StealthMark, 70.2 to 57.0. It leads on all 9 benchmarks. Claude Sonnet 5.5 scores higher on Newton's Mirror, with its largest category advantage in reflections.
See the difference ↘On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.
BENCHMARK BY BENCHMARK
DATASHEET
Claude Sonnet 5.5 scores higher on StealthMark and is 2× cheaper per output token. Muse Wonder runs 2.3× faster in our speed test. Both take about 1M tokens of context.
Full datasheets, every price and sourceClaude Sonnet 5.5 ↗Muse Wonder ↗
Anticipating threats and planning ahead. 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.


Cooperative planning and learning from experience. 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.


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


Claude Sonnet 5.5
The near-field silhouettes, broad perspective and paint contact order are recognizable. Missing outer chains, truncated repetitions and absent ordered imagery within the main and reflected spheres substantially limit the reflection system. Sparse spherical highlights leave much of the curved room and emitter mapping unsupported, despite some plausible planar light sequences.
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.
| Category | Claude Sonnet 5.5 | Muse Wonder |
|---|---|---|
| State at 600 ms | 24.0/25 | 22.0/25 |
| Camera and placement | 15.0/15 | 12.0/15 |
| Reflections | 35.0/120 | 21.5/120 |
| Materials and scale | 10.0/10 | 7.5/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Visual construction and creative interpretation.


Claude Sonnet 5.5
The centered coral squid has a friendly, composed expression and a balanced flower-like silhouette. Eight thick arms and two slender tentacles remain visibly connected, with no inverted parts. The mantle is elongated rather than compact, and the arm spacing is uneven. Soft shading gives volume, but dense stippling weakens the requested smooth matte finish; the broad background halo makes depth less precise.
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.
| Category | Claude Sonnet 5.5 | Muse Wonder |
|---|---|---|
| Task & likeness | 8.0/10 | 7.5/10 |
| Anatomy & construction | 8.0/10 | 7.0/10 |
| Space & placement | 8.0/10 | 7.5/10 |
| Light & reflections | 7.5/10 | 7.0/10 |
| Purposeful detail | 8.0/10 | 7.5/10 |
| Artistry & character | 8.0/10 | 6.5/10 |
| Materials & effects | 8.0/10 | 6.5/10 |
| Visual integrity | 8.5/10 | 8.0/10 |
Claude Sonnet 5.5
A coral squid with spreading arms tests connected anatomy, balanced composition and soft surface shading.
Muse Wonder
A small elephant protecting a delicate seed tests expressive anatomy, physical contact and contrasting organic materials.
Precise visual recall and portrait reconstruction.


Claude Sonnet 5.5
The crossed hands, dark dress, restrained smile and winding landscape clearly recall the Mona Lisa. Replication is limited by the frontal symmetry, wide eyes, elongated neck and flattened fingers. Soft facial shading provides volume, but heavy darkness and pervasive crackle obscure forms. The composition is coherent; the landscape and fabric remain visibly schematic.
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.
| Category | Claude Sonnet 5.5 | Muse Wonder |
|---|---|---|
| Task & likeness | 6.5/10 | 5.5/10 |
| Anatomy & construction | 5.0/10 | 5.5/10 |
| Space & placement | 6.0/10 | 5.5/10 |
| Light & reflections | 6.5/10 | 5.5/10 |
| Purposeful detail | 6.0/10 | 5.5/10 |
| Artistry & character | 6.5/10 | 5.5/10 |
| Materials & effects | 6.0/10 | 5.0/10 |
| Visual integrity | 6.5/10 | 6.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


Claude Sonnet 5.5
A richly designed beach illustration combines radiant sunset bands, intricate palm fans and playful silhouettes within a cohesive purple, coral and turquoise palette. Carefully varied accessories reward close inspection, while overlapping foreground forms and shoreline layers organize the abundant activity. Dense palm strokes compete with focal subjects; animal anatomy, relative scales and reflected silhouettes remain simplified.
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.
| Category | Claude Sonnet 5.5 | Muse Wonder |
|---|---|---|
| Task & likeness | 9.0/10 | 8.5/10 |
| Anatomy & construction | 8.0/10 | 6.0/10 |
| Space & placement | 8.5/10 | 6.5/10 |
| Light & reflections | 8.5/10 | 6.5/10 |
| Purposeful detail | 9.5/10 | 9.0/10 |
| Artistry & character | 9.5/10 | 7.0/10 |
| Materials & effects | 8.5/10 | 6.0/10 |
| Visual integrity | 8.0/10 | 7.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Claude Sonnet 5.5
This benchmark has not been assessed yet.
Muse Wonder
This benchmark has not been assessed yet.
A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.
Scene composition and interacting subjects.


Claude Sonnet 5.5
The raccoon clearly rides on the dog's back while the dog grips the jet ski controls. Expressive faces, vivid colors and a sweeping wake make the scene appealing. Visible limbs connect coherently, but overlapping steering paws and an indistinct control mounting weaken construction. Flat character lighting and simplified water limit depth and material realism.
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.
| Category | Claude Sonnet 5.5 | Muse Wonder |
|---|---|---|
| Task & likeness | 8.5/10 | 7.5/10 |
| Anatomy & construction | 7.0/10 | 5.5/10 |
| Space & placement | 8.0/10 | 6.5/10 |
| Light & reflections | 6.5/10 | 4.5/10 |
| Purposeful detail | 8.0/10 | 7.5/10 |
| Artistry & character | 7.0/10 | 5.5/10 |
| Materials & effects | 7.5/10 | 7.0/10 |
| Visual integrity | 8.0/10 | 7.0/10 |
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.
Subject construction and spatial relationships.


Claude Sonnet 5.5
The pelican is immediately recognizable, with an expressive face, generous bill and appealing cycling pose. Spokes, chain, feathers and scarf provide purposeful detail. The bicycle largely holds together, though overlapping angular legs obscure the far foot’s pedal contact. Clean outlines and balanced composition succeed; flat surfaces and limited directional lighting constrain depth.
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.
| Category | Claude Sonnet 5.5 | Muse Wonder |
|---|---|---|
| Task & likeness | 9.0/10 | 8.5/10 |
| Anatomy & construction | 7.5/10 | 6.0/10 |
| Space & placement | 7.5/10 | 7.5/10 |
| Light & reflections | 6.5/10 | 5.5/10 |
| Purposeful detail | 8.0/10 | 8.5/10 |
| Artistry & character | 7.5/10 | 7.5/10 |
| Materials & effects | 6.5/10 | 6.0/10 |
| Visual integrity | 8.0/10 | 8.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.