STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-6 Sol vs MiniMax M3.1 Flash

GPT-6 Sol leads MiniMax M3.1 Flash by 5.8 points on StealthMark, 51.7 to 45.9. MiniMax M3.1 Flash leads on 5 of 9 benchmarks, including Foresight, and GPT-6 Sol on 4, 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

51.7/100Overall rank 13/53
45.9/100Overall rank 24/53

General Intelligence

46.1/100
35.8/100

Visual Intelligence

61.6/100
62.6/100

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-6 Sol

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT-6 Sol
  • MiniMax M3.1 Flash
  • Other models
  • Median

DATASHEET

Specs and pricing

Both take about 1.05M tokens of context.

  • GPT-6 Sol
  • MiniMax M3.1 Flash
  • Other models
  • Median
PricePer 1M output tokens, input below
GPT-6 Sol: $10$2 inputMiniMax M3.1 Flash: No list price
Context windowTokens per request, max output below
GPT-6 Sol: 1.05MTied128K max outputMiniMax M3.1 Flash: 1MTied
Output speedTokens per second, our measurement
GPT-6 Sol: 91tokens/sMiniMax M3.1 Flash: Not measured
SizeTotal and active parameters
GPT-6 Sol: Not disclosedMiniMax M3.1 Flash: 428B23B active
Developer
OpenAIMiniMax
Released
22 Sep 2026Not published
Origin
United StatesNot published
Input → output
Text, image → textText, image, video → text
Architecture
Not publishedMixture-of-Experts with MiniMax Sparse Attention and native multimodal encoder

Full datasheets, every price and sourceGPT-6 Sol ↗MiniMax M3.1 Flash ↗

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 Sol 30.4/100Rank 29/47

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

MiniMax M3.1 Flash 30.7/100Rank 28/47

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

Points per level

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

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 Sol 76.6/100Rank 11/48

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

MiniMax M3.1 Flash 21.9/100Rank 38/48

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

Points per level

LevelGPT-6 SolMiniMax 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
18.4 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-6 Sol

The centered sphere, separate airborne black form and color ordering support scene recognition. Rounded shading and curved rims provide readable volume and gloss. Shrinking side images, a floor counterpart and curved lamp highlights provide isolated reflection cues, but broad bands and sparse repetitions leave nested room imagery, outer chains and ordered emitter mapping unsupported. Vertical framing departs from the prescribed view, while paint contact, transport and solid-metal appearance remain weak or uncertain.

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-6 SolMiniMax M3.1 Flash
State at 600 ms19.0/2520.0/25
Camera and placement12.0/1510.0/15
Reflections8.0/12024.0/120
Materials and scale6.5/108.0/10
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-6 Sol

Six evenly spaced lobes, small outward-facing heads and a regular hexagonal opening make the motif immediately readable. The central angular band merges several intersections, weakening the alternating weave. Pale shading gives modest volume, but scales are sparse and repetitive, crossing shadows are weak, and the heads have limited anatomical definition.

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-6 SolMiniMax M3.1 Flash
Task & likeness7.5/107.5/10
Anatomy & construction6.5/106.0/10
Space & placement6.5/107.0/10
Light & reflections6.0/106.0/10
Purposeful detail6.5/105.0/10
Artistry & character7.0/106.0/10
Materials & effects5.5/107.0/10
Visual integrity6.0/106.0/10

Benchmark task

GPT-6 Sol

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-6 Sol

The dark clothing, crossed arms, restrained smile and distant landscape establish the Mona Lisa reference. Replication is limited by the oversized, nearly frontal head, schematic eyes and fingerless hand shapes. Soft shading suggests facial volume, but muddy transitions and angular scenery weaken depth and painterly finish.

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-6 SolMiniMax M3.1 Flash
Task & likeness5.5/104.0/10
Anatomy & construction3.5/104.5/10
Space & placement5.5/105.5/10
Light & reflections6.0/104.5/10
Purposeful detail4.5/105.5/10
Artistry & character5.0/106.0/10
Materials & effects4.5/105.5/10
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-6 Sol

A cohesive, appealing beach illustration with framing palms, a warm sunset and a clear reflection path. The turtle, crab, birds and beach ball fulfill the playful brief. Clean silhouettes and restrained colors work well, while simplified anatomy, shallow spatial cues and inconsistent foreground shadows limit depth and finish.

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-6 SolMiniMax M3.1 Flash
Task & likeness8.5/108.5/10
Anatomy & construction7.0/107.0/10
Space & placement7.0/107.5/10
Light & reflections6.5/106.0/10
Purposeful detail7.0/108.0/10
Artistry & character6.0/106.5/10
Materials & effects6.5/106.5/10
Visual integrity7.5/107.5/10

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-6 Sol

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-6 Sol

The raccoon rides the dog's back, and the dog's connected foreleg reaches the steering grip. Expressive faces, a cohesive palette and sweeping wake make an appealing illustration. Vehicle construction and seating remain simplified; broad splash ribbons convey speed more convincingly than physical displacement. The sun has little corresponding reflection or effect on the subjects.

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-6 SolMiniMax M3.1 Flash
Task & likeness7.5/109.0/10
Anatomy & construction6.5/108.0/10
Space & placement7.5/108.0/10
Light & reflections6.0/106.0/10
Purposeful detail7.5/107.5/10
Artistry & character6.5/107.5/10
Materials & effects7.5/107.0/10
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-6 Sol

The pelican reads clearly, with an expressive face, generous bill and appealing pastel composition. Spokes, basket weave and feather contours are carefully organized. Both legs connect to the body, though joint definition and pedal contacts are simplified. Consistent wheel placement and a ground shadow establish support; restrained shading gives limited volume.

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-6 SolMiniMax M3.1 Flash
Task & likeness9.0/108.5/10
Anatomy & construction7.5/106.5/10
Space & placement8.0/108.0/10
Light & reflections7.0/107.0/10
Purposeful detail8.0/107.5/10
Artistry & character8.5/106.5/10
Materials & effects7.0/107.0/10
Visual integrity8.5/106.5/10

Benchmark task

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