STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Claude Fable 5.1 vs Muse Wonder

Claude Fable 5.1 leads Muse Wonder by 4.3 points on StealthMark, 61.5 to 57.2. It leads on 6 of 9 benchmarks and Muse Wonder on 3, including both games. Claude Fable 5.1 scores higher on Newton's Mirror, with its largest category advantage in reflections.

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All results ↗
All results ↗

Overall StealthMark

61.5/100Overall rank 8/50
57.2/100Overall rank 10/50

General Intelligence

58.3/100
53.2/100

Visual Intelligence

66.8/100
64.5/100

BENCHMARK BY BENCHMARK

Where each model leads

  • Claude Fable 5.1
  • 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.

Claude Fable 5.134.2/100Rank 34/432 of 3 levels

2 of 3 levels played
Foresight: complete playing field
Level 38 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

LevelClaude Fable 5.1Muse Wonder
Level 1Second Thoughts
21 ptsOut of lives
16 ptsOut of lives
Level 2Pressure Pot
Pending
10 ptsOut of lives
Level 3Hide or Flight
8 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.

Claude Fable 5.180.2/100Rank 21/433 of 5 levels

3 of 5 levels played
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

LevelClaude Fable 5.1Muse Wonder
Level 1Hold the door
Pending
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9 ptsCleared
Level 3Relay vault
Pending
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

Claude Fable 5.1

The broad paint sequence, bilateral near-field sphere arrangement, overlaps and diminishing panel repetitions are recognizable; crimson is slightly too low. Small paint scale and basic shading provide material cues, although the steel response remains soft. Inaccurate light projections, missing outer chains and incomplete nested room imagery remain the principal limitations.

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

CategoryClaude Fable 5.1Muse Wonder
State at 600 ms24.0/2522.0/25
Camera and placement14.0/1512.0/15
Reflections48.0/12021.5/120
Materials and scale7.0/107.0/10
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

Claude Fable 5.1

The coral palette, friendly face, matte shading and cream arch create a coherent emblem. However, the mantle is elongated rather than compact, and the appendages spread mostly sideways and downward instead of forming an evenly spaced, flower-like starburst. Two thin hanging appendages weaken the thick-arm motif. Clean contours and balanced framing support the simple design.

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

CategoryClaude Fable 5.1Muse Wonder
Task & likeness6.5/107.5/10
Anatomy & construction7.0/107.0/10
Space & placement7.5/107.5/10
Light & reflections6.5/107.0/10
Purposeful detail6.0/107.5/10
Artistry & character7.0/106.5/10
Materials & effects6.5/106.5/10
Visual integrity8.0/108.0/10

Benchmark task

Claude Fable 5.1

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.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Claude Fable 5.1

The dark clothing, crossed hands and hazy landscape establish the Mona Lisa composition. Replication is limited by the frontal, elongated face, wide eyes and simplified smile. Rounded, parallel fingers and unclear wrist transitions weaken the hands. Warm facial shading gives some volume, but broad garment shapes and scattered crack marks substitute for convincing folds and painterly detail.

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

CategoryClaude Fable 5.1Muse Wonder
Task & likeness5.5/105.5/10
Anatomy & construction6.0/105.5/10
Space & placement6.0/105.5/10
Light & reflections6.0/105.5/10
Purposeful detail5.0/105.5/10
Artistry & character5.5/105.5/10
Materials & effects6.0/105.0/10
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

Claude Fable 5.1

The colorful sunset, layered shoreline, animals, kite and beach toys fulfill the lively beach brief. Clean silhouettes and a balanced composition give the illustration character. Construction is simplified: the umbrella resembles a segmented fan, dolphins have weak water interaction, and the sun’s reflection forms a rigid widening wedge. Flat surfaces and sparse contact shadows limit depth.

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

CategoryClaude Fable 5.1Muse Wonder
Task & likeness8.5/108.5/10
Anatomy & construction7.0/106.0/10
Space & placement7.0/106.5/10
Light & reflections7.0/106.5/10
Purposeful detail7.5/109.0/10
Artistry & character7.5/107.0/10
Materials & effects6.5/106.0/10
Visual integrity7.5/107.0/10

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

Claude Fable 5.1

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

Claude Fable 5.1

The raccoon rides on the dog's back, and the dog's extended foreleg reaches the jet ski controls. Expressive faces, a clear silhouette and sweeping spray make the action readable. Limb and handlebar overlaps weaken construction; broad shading provides limited volume, and the glowing sun has little corresponding reflection on the water. Clean vector shapes support an appealing but simplified illustration.

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

CategoryClaude Fable 5.1Muse Wonder
Task & likeness8.5/108.0/10
Anatomy & construction6.5/106.5/10
Space & placement7.0/106.5/10
Light & reflections5.5/104.5/10
Purposeful detail7.0/107.5/10
Artistry & character7.5/106.5/10
Materials & effects6.5/107.0/10
Visual integrity7.5/107.0/10

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

Claude Fable 5.1

The pelican reads clearly, with an expressive face, prominent bill and appealing composition. Both legs connect to the body, but the far foot's pedal contact and the wing's steering grip remain unclear. Wheel alignment and background layers are coherent. Clean contours and feather lines give polish, while schematic machinery, limited surface texture and weak directional lighting constrain the finish.

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

CategoryClaude Fable 5.1Muse Wonder
Task & likeness8.5/108.5/10
Anatomy & construction7.0/106.0/10
Space & placement7.5/107.5/10
Light & reflections6.0/105.5/10
Purposeful detail7.0/108.5/10
Artistry & character7.5/107.5/10
Materials & effects6.0/106.0/10
Visual integrity8.0/108.0/10

Benchmark task

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