STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-6 Luna vs Muse Wonder

Muse Wonder leads GPT-6 Luna by 17.9 points on StealthMark, 57.0 to 39.1. It leads on 8 of 9 benchmarks, including both games, and GPT-6 Luna on 1. Muse Wonder scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

39.1/100Overall rank 35/53
57.0/100Overall rank 10/53

General Intelligence

31.3/100
53.1/100

Visual Intelligence

52.0/100
64.0/100

Reasoning efficiency

On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.

Single-step reasoning Result quality weighed against reasoning tokens on a single problem

Multi-step reasoning Result quality weighed against reasoning tokens across connected steps, as in agentic workflows

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT-6 Luna
  • Muse Wonder
  • Other models
  • Median

DATASHEET

Specs and pricing

GPT-6 Luna is 40× cheaper per output token. Muse Wonder scores higher on StealthMark and runs 4.3× faster in our speed test. Both take about 1.05M tokens of context.

  • GPT-6 Luna
  • Muse Wonder
  • Other models
  • Median
PricePer 1M output tokens, input below
GPT-6 Luna: $0.5040× cheaper$0.10 inputMuse Wonder: $20$4 input
Context windowTokens per request, max output below
GPT-6 Luna: 1.05MTied128K max outputMuse Wonder: 1MTied
Output speedTokens per second, our measurement
GPT-6 Luna: 131tokens/sMuse Wonder: 5704.3× fastertokens/s
Developer
OpenAIMeta
Released
22 Sep 202612 Oct 2026
Origin
United StatesBoth
Input → output
Text, image → textText, image, video, audio, PDF → text

Full datasheets, every price and sourceGPT-6 Luna ↗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.

GPT-6 Luna 29.8/100Rank 32/47

Survived 0 of 3
Foresight: complete playing field
Level 36 ptsTurn 7 / 20

Muse Wonder 52.3/100Rank 17/47

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

Points per level

LevelGPT-6 LunaMuse Wonder
Level 1Second Thoughts
15 ptsOut of lives
16 ptsOut of lives
Level 2Pressure Pot
5 ptsOut of lives
10 ptsOut of lives
Level 3Hide or Flight
6 ptsOut of lives
11 ptsOut of lives

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.

GPT-6 Luna 44.0/100Rank 25/48

Cleared 4 of 5
Latch: complete playing field
Level 513 ptsTurn 15 / 40

Muse Wonder 67.0/100Rank 17/48

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

Points per level

LevelGPT-6 LunaMuse Wonder
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
8.8 ptsClearedFinished early · 1 beacon left
9 ptsCleared
Level 3Relay vault
17 ptsCleared1 beacon left
18.8 ptsCleared
Level 4Passing bay
15.8 ptsClearedFinished early · 3 beacons left
17.8 ptsClearedFinished early · 1 beacon left
Level 5Second thoughts
13 ptsFinished early
20.6 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

GPT-6 Luna

The schematic scene supports the paint contact order and compact paint scale. Its low, undersized main sphere and incorrectly placed wall images depart from the reference geometry. A few shrinking wall images provide limited optical organization, while absent lateral recursion and outer chains, broad sphere ribbons and isolated panel highlights leave most nested room and emitter mapping undeveloped.

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-6 LunaMuse Wonder
State at 600 ms22.0/2522.0/25
Camera and placement3.5/1512.0/15
Reflections5.0/12021.5/120
Materials and scale7.0/107.5/10
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-6 Luna

Sixfold symmetry, pale coloring and six outward-facing heads establish the motif. However, every neck floats clear of the knot. Squared outer sections replace the required semicircular lobes, and the large stepped opening lacks a regular hexagonal contour. Repeated scales and soft shading suggest skin, but translucent crossings and doubled edges weaken the living, interwoven construction.

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-6 LunaMuse Wonder
Task & likeness4.5/107.5/10
Anatomy & construction3.5/107.0/10
Space & placement5.5/107.5/10
Light & reflections5.0/107.0/10
Purposeful detail5.0/107.5/10
Artistry & character5.0/106.5/10
Materials & effects5.0/106.5/10
Visual integrity4.5/108.0/10

Benchmark task

GPT-6 Luna

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-6 Luna

The dark veil, crossed arms, restrained smile and layered landscape clearly evoke Mona Lisa. Clean contours and muted colors create a coherent illustration. Replication is limited by enlarged, outlined eyes, simplified facial volume, broad shoulders and indistinct overlapping hands. Gradients suggest depth, but lack the original's subtle 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-6 LunaMuse 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 & effects5.0/105.0/10
Visual integrity6.0/106.5/10

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-6 Luna

The warm sky, layered sea and framing palms create an appealing beach composition. Animals, birds, toys and reflected sunlight fulfill the brief. Human anatomy remains schematic, and simplified figures offer limited expression. Missing shadows and the dolphin's splashless jump weaken physical grounding, while clean silhouettes and readable small details support the illustration.

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-6 LunaMuse Wonder
Task & likeness7.5/108.5/10
Anatomy & construction5.0/106.0/10
Space & placement7.5/106.5/10
Light & reflections5.0/106.5/10
Purposeful detail7.0/109.0/10
Artistry & character5.0/107.0/10
Materials & effects6.5/106.0/10
Visual integrity6.0/107.0/10

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-6 Luna

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-6 Luna

Expressive faces, warm sunset colors and clean silhouettes create an appealing illustration. The raccoon sits on the dog's back, but the dog's grip and steering linkage remain unclear. The broad hull resembles a speedboat, and flat shading, absent sun reflections and modest water displacement limit depth and motion.

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-6 LunaMuse Wonder
Task & likeness8.0/107.5/10
Anatomy & construction5.5/105.5/10
Space & placement7.5/106.5/10
Light & reflections6.0/104.5/10
Purposeful detail7.0/107.5/10
Artistry & character5.5/105.5/10
Materials & effects6.5/107.0/10
Visual integrity5.0/107.0/10

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-6 Luna

The pelican’s distinctive bill and the coordinated vintage poster palette make an appealing illustration. Circular wheels, orderly spokes and clean lettering strengthen the design. Riding mechanics are less convincing: neither wing reaches the handlebars, pedal contact is ambiguous, and the drivetrain is incomplete. The wheels sit against water without a clear supporting surface. Flat lighting limits volume.

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-6 LunaMuse Wonder
Task & likeness8.0/108.5/10
Anatomy & construction5.0/106.0/10
Space & placement6.5/107.5/10
Light & reflections6.5/105.5/10
Purposeful detail7.5/108.5/10
Artistry & character6.5/107.5/10
Materials & effects6.5/106.0/10
Visual integrity7.0/108.0/10

Benchmark task

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