STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-5.6 Terra vs Muse Wonder

Muse Wonder leads GPT-5.6 Terra by 11.2 points on StealthMark, 57.0 to 45.8. It leads on 7 of 9 benchmarks, including Foresight, and GPT-5.6 Terra on 1, including Latch, with 1 tied. Muse Wonder scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

45.8/100Overall rank 25/53
57.0/100Overall rank 10/53

General Intelligence

41.9/100
53.1/100

Visual Intelligence

52.7/100
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

  • GPT-5.6 Terra

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT-5.6 Terra
  • Muse Wonder
  • Other models
  • Median

DATASHEET

Specs and pricing

GPT-5.6 Terra is 1.7× cheaper per output token. Muse Wonder scores higher on StealthMark and runs 5.6× faster in our speed test. Both take about 1.05M tokens of context.

  • GPT-5.6 Terra
  • Muse Wonder
  • Other models
  • Median
PricePer 1M output tokens, input below
GPT-5.6 Terra: $121.7× cheaper$2 inputMuse Wonder: $20$4 input
Context windowTokens per request, max output below
GPT-5.6 Terra: 1.05MTied128K max outputMuse Wonder: 1MTied
Output speedTokens per second, our measurement
GPT-5.6 Terra: 102tokens/sMuse Wonder: 5705.6× fastertokens/s
Developer
OpenAIMeta
Released
9 Jul 202612 Oct 2026
Origin
United StatesBoth
Input → output
Text, image → textText, image, video, audio, PDF → text

Full datasheets, every price and sourceGPT-5.6 Terra ↗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-5.6 Terra 30.1/100Rank 31/47

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-5.6 TerraMuse Wonder
Level 1Second Thoughts
5 ptsOut of lives
16 ptsOut of lives
Level 2Pressure Pot
9 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-5.6 Terra 80.0/100Rank 9/48

Cleared 5 of 5
Latch: complete playing field
Level 520.6 ptsTurn 27 / 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-5.6 TerraMuse Wonder
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.6 ptsCleared
9 ptsCleared
Level 3Relay vault
19.2 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 Terra

The real sphere and airborne black blob are substantially too low in the complete frame after accounting for aspect ratio. The first wall and floor reflections have incompatible placement, relative size or silhouette. Both lateral regions lack the references' receding lane-and-chain organization. The few recognizable mirror images provide limited optical structure. The main, side and floor spheres replace nested mirror imagery with smooth bands, while sparse planar light patches and broad spherical highlights fail to establish coherent repeated emitter mapping.

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 TerraMuse Wonder
State at 600 ms24.0/2522.0/25
Camera and placement6.0/1512.0/15
Reflections7.0/12021.5/120
Materials and scale5.5/107.5/10
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-5.6 Terra

Six ivory heads and rounded lobes create a striking radial emblem around a clear hexagonal opening. Soft shading gives the bodies volume, but abrupt rectangular and diagonal band endings make the continuous alternating weave ambiguous. Repetitive scale lines and simplified faces convey an ornamental serpent more convincingly than living anatomy.

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 TerraMuse Wonder
Task & likeness7.5/107.5/10
Anatomy & construction5.5/107.0/10
Space & placement7.0/107.5/10
Light & reflections7.5/107.0/10
Purposeful detail6.5/107.5/10
Artistry & character5.5/106.5/10
Materials & effects6.5/106.5/10
Visual integrity5.0/108.0/10

Benchmark task

GPT-5.6 Terra

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 Terra

The dark clothing, central portrait and restrained smile evoke the Mona Lisa, but replication is limited by the broad face, elongated neck, nearly frontal pose and indistinct landscape. Soft gradients give the face some volume. Crossed arms become rounded masses without readable fingers or wrists, and the expression lacks the original's subtlety. Clean framing and curves support an otherwise basic, uneven portrait.

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 TerraMuse Wonder
Task & likeness4.0/105.5/10
Anatomy & construction3.0/105.5/10
Space & placement4.5/105.5/10
Light & reflections5.0/105.5/10
Purposeful detail4.0/105.5/10
Artistry & character4.0/105.5/10
Materials & effects4.0/105.0/10
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-5.6 Terra

Warm sunset gradients, framing palms and colorful beach activities create an appealing scene. Animals, birds and a sun reflection fulfill the brief. The dog and turtle remain schematic, foreground depth is shallow, and the reflection forms rigid bands. Clean silhouettes and readable accessories support a competent illustration, but limited anatomy, material variation and lighting keep it below exceptional.

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 TerraMuse Wonder
Task & likeness7.5/108.5/10
Anatomy & construction5.0/106.0/10
Space & placement6.0/106.5/10
Light & reflections5.0/106.5/10
Purposeful detail6.5/109.0/10
Artistry & character5.0/107.0/10
Materials & effects5.5/106.0/10
Visual integrity5.0/107.0/10

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 Terra

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 Terra

Expressive faces, a recognizable raccoon perched on the dog, and a sweeping wake make an appealing cartoon. The principal weakness is the steering interaction: the dog's paw sits beside the control assembly without a convincing handlebar grip. Bold outlines and coherent layering provide polish, while simplified shading, compressed seating geometry and angular splashes limit depth and physical credibility.

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 TerraMuse Wonder
Task & likeness7.5/107.5/10
Anatomy & construction5.0/105.5/10
Space & placement7.0/106.5/10
Light & reflections6.0/104.5/10
Purposeful detail7.0/107.5/10
Artistry & character5.0/105.5/10
Materials & effects7.0/107.0/10
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

GPT-5.6 Terra

The oversized bill, expressive eye and balanced twilight palette make the cyclist immediately readable. Clean contours and wheel details support the illustration, but the rabbit-like head tufts weaken pelican likeness. The wing does not clearly grip the handlebar, pedal contact is uneven, and the drivetrain is incomplete. Lighting remains mostly decorative.

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 TerraMuse Wonder
Task & likeness6.0/108.5/10
Anatomy & construction6.0/106.0/10
Space & placement7.0/107.5/10
Light & reflections6.5/105.5/10
Purposeful detail7.0/108.5/10
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.