STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT 5.6 Terra vs MiniMax M3.1 Flash

GPT 5.6 Terra leads MiniMax M3.1 Flash by 0.8 points on StealthMark, 46.2 to 45.4. MiniMax M3.1 Flash leads on 7 of 9 benchmarks, including Foresight, and GPT 5.6 Terra on 2, including Latch. MiniMax M3.1 Flash scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

46.2/100Overall rank 22/50
45.4/100Overall rank 24/50

General Intelligence

41.6/100
35.5/100

Visual Intelligence

54.8/100
62.6/100

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT 5.6 Terra
  • MiniMax M3.1 Flash
  • 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 Terra30.1/100Rank 29/43

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

MiniMax M3.1 Flash30.7/100Rank 26/43

Survived 1 of 3 levels
Foresight: complete playing field
Level 39 ptsTurn 20 / 20

Points per level

LevelGPT 5.6 TerraMiniMax M3.1 Flash
Level 1Second Thoughts
5 ptsOut of lives
6 ptsOut of lives
Level 2Pressure Pot
9 ptsOut of lives
5 ptsOut of lives
Level 3Hide or Flight
6 ptsOut of lives
9 ptsSurvived

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 Terra80.0/100Rank 8/45

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

MiniMax M3.1 Flash21.9/100Rank 34/45

Cleared 2 of 5 levels
Latch: complete playing field
Level 517.2 ptsTurn 24 / 40

Points per level

LevelGPT 5.6 TerraMiniMax M3.1 Flash
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.6 ptsCleared
8.6 ptsClearedFinished early · 1 beacon left
Level 3Relay vault
19.2 ptsCleared
5 ptsOut of turns
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
4.4 ptsFinished early
Level 5Second thoughts
20.6 ptsCleared
17.2 ptsFinished early

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.

MiniMax M3.1 Flash

The sphere placement, separate airborne black blob, recent cyan contact and elongated crimson aftermath support the required gross physical state. The reflection system remains severely incomplete: isolated side images, broad metallic bands and sparse light patches replace extensive mirror repetitions and curved nested imagery.

Score breakdown

CategoryGPT 5.6 TerraMiniMax M3.1 Flash
State at 600 ms23.5/2520.0/25
Camera and placement6.0/1510.0/15
Reflections7.0/12024.0/120
Materials and scale5.5/108.0/10
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 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.

MiniMax M3.1 Flash

The sculptural M, confident grin and miniature theatrical pose closely fulfill the brief. Controlled gradients and clean shapes give the character volume and appeal. Moderate drawing complexity, an apparently separated shoe and ambiguous grounding limit the finish.

Score breakdown

CategoryGPT 5.6 TerraMiniMax M3.1 Flash
Task & likeness7.5/107.5/10
Anatomy & construction5.5/106.0/10
Space & placement7.5/107.0/10
Light & reflections7.5/106.0/10
Purposeful detail6.5/105.0/10
Artistry & character6.0/106.0/10
Materials & effects7.0/107.0/10
Visual integrity6.5/106.0/10

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.

MiniMax M3.1 Flash

A small robot with an oversized angular head presents a glowing object. The scene tests character proportions, gesture and contrasting 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.

MiniMax M3.1 Flash

A coherent decorative portrait combines layered hair, garment contours, linked trim and atmospheric scenery. These provide meaningful drawing complexity, but likeness remains limited by the frontal elongated face and altered clothing. Compressed hands, abrupt facial shading and cluttered local edges leave the portrait uneven.

Score breakdown

CategoryGPT 5.6 TerraMiniMax M3.1 Flash
Task & likeness4.0/104.0/10
Anatomy & construction3.0/104.5/10
Space & placement4.5/105.5/10
Light & reflections5.0/104.5/10
Purposeful detail4.0/105.5/10
Artistry & character4.0/106.0/10
Materials & effects4.0/105.5/10
Visual integrity6.0/105.5/10

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.

MiniMax M3.1 Flash

A controlled, detailed beach illustration with expressive animals, coherent depth and accomplished foliage and accessory drawing. Its warm palette and varied contours sustain visual interest. Simplified anatomy and object volumes limit physical conviction, while reflection streaks crossing dry-looking sand and generic shadows weaken the lighting.

Score breakdown

CategoryGPT 5.6 TerraMiniMax M3.1 Flash
Task & likeness8.0/108.5/10
Anatomy & construction5.5/107.0/10
Space & placement7.0/107.5/10
Light & reflections6.0/106.0/10
Purposeful detail6.5/108.0/10
Artistry & character5.5/106.5/10
Materials & effects5.5/106.5/10
Visual integrity5.0/107.5/10

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.

MiniMax M3.1 Flash

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.

MiniMax M3.1 Flash

An expressive, coherent cartoon clearly demonstrates the requested riding and steering relationship. Layered animal shapes, readable vehicle depth and purposeful facial details support its drawing quality. Ambiguous grips, sparse cast shadows and simplified material responses limit physical precision.

Score breakdown

CategoryGPT 5.6 TerraMiniMax M3.1 Flash
Task & likeness7.5/109.0/10
Anatomy & construction6.0/108.0/10
Space & placement7.5/108.0/10
Light & reflections6.5/106.0/10
Purposeful detail7.5/107.5/10
Artistry & character6.0/107.5/10
Materials & effects7.0/107.0/10
Visual integrity8.0/108.0/10

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.

MiniMax M3.1 Flash

A controlled coastal illustration with a clear pelican silhouette, detailed wheels and accomplished feather and bill drawing. Continuous body construction and grounded wheels support the scene. Ambiguous leg, pedal and steering contacts weaken the riding mechanics; approximate directional lighting and simplified materials limit physical conviction.

Score breakdown

CategoryGPT 5.6 TerraMiniMax M3.1 Flash
Task & likeness8.0/108.5/10
Anatomy & construction6.5/106.5/10
Space & placement7.0/108.0/10
Light & reflections6.5/107.0/10
Purposeful detail6.5/107.5/10
Artistry & character7.0/106.5/10
Materials & effects6.5/107.0/10
Visual integrity8.0/106.5/10

Benchmark task

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