GPT-5.6 Sol 62.9/100Rank 8/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-5.6 Sol leads MiniMax M3.1 Flash by 8.2 points on StealthMark, 54.1 to 45.9. MiniMax M3.1 Flash leads on 6 of 9 benchmarks and GPT-5.6 Sol on 3, including both games. MiniMax M3.1 Flash scores higher on Newton's Mirror, with its largest category advantage in reflections.
See the difference ↘On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.
BENCHMARK BY BENCHMARK
DATASHEET
Both take about 1.05M tokens of context.
Full datasheets, every price and sourceGPT-5.6 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.


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.


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


GPT-5.6 Sol
The central sphere and paint ordering are supported, but a frontal, centrally converging chamber replaces the required corner perspective. The first wall and floor images have incorrect placement and scale relationships. Sparse reflection cues remain, while continuous outer chains, open lateral sightlines, dense planar light sequences and curved nested spherical imagery are largely missing.
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.
| Category | GPT-5.6 Sol | MiniMax M3.1 Flash |
|---|---|---|
| State at 600 ms | 23.0/25 | 20.0/25 |
| Camera and placement | 6.0/15 | 10.0/15 |
| Reflections | 11.0/120 | 24.0/120 |
| Materials and scale | 7.5/10 | 8.0/10 |
| Floor-damage reward | 0.0/10 | 0.0/10 |
A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.
Visual construction and creative interpretation.


GPT-5.6 Sol
Six evenly spaced lobes, outward-facing heads and a clear central hexagon establish the requested knot. The ivory silhouette is controlled, but broad crossing bands resemble rigid strips, shading provides limited muscular volume, and repetitive scale lines extend across black loop openings. Small oval heads have readable eyes and mouths but limited anatomical character or moist surface detail.
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.
| Category | GPT-5.6 Sol | MiniMax M3.1 Flash |
|---|---|---|
| Task & likeness | 7.5/10 | 7.5/10 |
| Anatomy & construction | 6.0/10 | 6.0/10 |
| Space & placement | 7.0/10 | 7.0/10 |
| Light & reflections | 5.0/10 | 6.0/10 |
| Purposeful detail | 6.0/10 | 5.0/10 |
| Artistry & character | 6.5/10 | 6.0/10 |
| Materials & effects | 4.5/10 | 7.0/10 |
| Visual integrity | 6.0/10 | 6.0/10 |
GPT-5.6 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.
Precise visual recall and portrait reconstruction.


GPT-5.6 Sol
The crossed hands, dark dress and winding landscape establish the Mona Lisa composition. Replication is limited by enlarged eyes, an elongated face and a more frontal pose. Broad gradients suggest volume, but outlined features and flattened, overlapping fingers weaken the portrait. The frame and restrained palette unify the image; visible grain adds texture without convincing painterly transitions.
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.
| Category | GPT-5.6 Sol | MiniMax M3.1 Flash |
|---|---|---|
| Task & likeness | 4.5/10 | 4.0/10 |
| Anatomy & construction | 4.0/10 | 4.5/10 |
| Space & placement | 5.5/10 | 5.5/10 |
| Light & reflections | 5.0/10 | 4.5/10 |
| Purposeful detail | 5.0/10 | 5.5/10 |
| Artistry & character | 4.5/10 | 6.0/10 |
| Materials & effects | 5.5/10 | 5.5/10 |
| Visual integrity | 6.5/10 | 5.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


GPT-5.6 Sol
The purple-to-gold sunset, framing palms and varied beach activities create an appealing, coherent illustration. The sun’s reflection establishes a clear focal path. Figures and animals are recognizable but geometrically simplified; airborne dolphins lack convincing splashes, and the boat reflection is schematic. Clean silhouettes and playful details succeed more strongly than anatomical depth or material realism.
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.
| Category | GPT-5.6 Sol | MiniMax M3.1 Flash |
|---|---|---|
| Task & likeness | 8.5/10 | 8.5/10 |
| Anatomy & construction | 6.0/10 | 7.0/10 |
| Space & placement | 7.0/10 | 7.5/10 |
| Light & reflections | 6.5/10 | 6.0/10 |
| Purposeful detail | 7.0/10 | 8.0/10 |
| Artistry & character | 6.5/10 | 6.5/10 |
| Materials & effects | 6.5/10 | 6.5/10 |
| Visual integrity | 7.0/10 | 7.5/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


GPT-5.6 Sol
This benchmark has not been assessed yet.
MiniMax M3.1 Flash
This benchmark has not been assessed yet.
A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.
Scene composition and interacting subjects.


GPT-5.6 Sol
Expressive faces, bold silhouettes and layered waves make an appealing cartoon. The raccoon sits convincingly behind the dog's shoulders, and the dog's forward paw reaches the steering grip. Steering construction and seated support remain somewhat ambiguous. The glowing sunset lacks a corresponding warm reflection or consistent illumination on the riders.
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.
| Category | GPT-5.6 Sol | MiniMax M3.1 Flash |
|---|---|---|
| Task & likeness | 6.5/10 | 9.0/10 |
| Anatomy & construction | 5.0/10 | 8.0/10 |
| Space & placement | 6.5/10 | 8.0/10 |
| Light & reflections | 6.5/10 | 6.0/10 |
| Purposeful detail | 7.5/10 | 7.5/10 |
| Artistry & character | 5.0/10 | 7.5/10 |
| Materials & effects | 7.0/10 | 7.0/10 |
| Visual integrity | 5.0/10 | 8.0/10 |
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.
Subject construction and spatial relationships.


GPT-5.6 Sol
The expressive pelican and balanced coastal composition remain appealing, but a sky-colored slit between the neck contours above the wing leaves the central anatomy incoherent. This visible construction and layering defect prevents a clean-integrity assessment. Clustered feet lack clear pedal contacts and the chain routing is schematic; lighting and water reflections remain graphic.
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.
| Category | GPT-5.6 Sol | MiniMax M3.1 Flash |
|---|---|---|
| Task & likeness | 8.5/10 | 8.5/10 |
| Anatomy & construction | 5.0/10 | 6.5/10 |
| Space & placement | 7.5/10 | 8.0/10 |
| Light & reflections | 7.5/10 | 7.0/10 |
| Purposeful detail | 8.0/10 | 7.5/10 |
| Artistry & character | 6.5/10 | 6.5/10 |
| Materials & effects | 7.0/10 | 7.0/10 |
| Visual integrity | 4.5/10 | 6.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.