GPT-6 Sol 30.4/100Rank 29/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-6 Sol leads MiMo-V2.6-Pro by 3.8 points on StealthMark, 51.7 to 47.9. It leads on 7 of 9 benchmarks, including Latch, and MiMo-V2.6-Pro on 2, including Foresight. MiMo-V2.6-Pro 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
GPT-6 Sol scores higher on StealthMark. MiMo-V2.6-Pro is 11× cheaper per output token and runs 28% faster in our speed test. Both take about 1.05M tokens of context.
Full datasheets, every price and sourceGPT-6 Sol ↗MiMo-V2.6-Pro ↗
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-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.
MiMo-V2.6-Pro
The main framing and visible paint-contact story are well supported. Major optical omissions dominate the result: sparse repetitions, undersized first images, missing outer chains and absent curved nested imagery prevent a coherent mirror-room system. The metallic forms remain convincing in volume but have a soft illustrative finish.
| Category | GPT-6 Sol | MiMo-V2.6-Pro |
|---|---|---|
| State at 600 ms | 19.0/25 | 23.0/25 |
| Camera and placement | 12.0/15 | 12.0/15 |
| Reflections | 8.0/120 | 19.0/120 |
| Materials and scale | 6.5/10 | 7.5/10 |
| 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-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.
MiMo-V2.6-Pro
An appealing rabbit with balanced framing, expressive eyes and purposeful costume accents. Simple frontal construction limits anatomical and spatial accomplishment. The orange orb provides an effective luminous focal point, but unreadable wrist connections weaken the requested gestures and prevent stronger integrity credit.
| Category | GPT-6 Sol | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 7.5/10 | 6.5/10 |
| Anatomy & construction | 6.5/10 | 5.0/10 |
| Space & placement | 6.5/10 | 5.5/10 |
| Light & reflections | 6.0/10 | 6.5/10 |
| Purposeful detail | 6.5/10 | 6.5/10 |
| Artistry & character | 7.0/10 | 5.0/10 |
| Materials & effects | 5.5/10 | 6.5/10 |
| Visual integrity | 6.0/10 | 6.0/10 |
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.
MiMo-V2.6-Pro
A small rabbit in an explorer outfit floats with a luminous orb. The scene tests character anatomy, pose and the placement of geometric forms around it.
Precise visual recall and portrait reconstruction.


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.
MiMo-V2.6-Pro
The portrait is recognizable through its dark silhouette, slight smile and muted landscape, but replication is weak. A frontal, oversized head and symmetric torso replace the reference's turned seated pose; angular, separated hands omit its central gesture. Smooth shading maintains coherence while anatomical detail, depth and material rendering remain basic.
| Category | GPT-6 Sol | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 5.5/10 | 3.5/10 |
| Anatomy & construction | 3.5/10 | 3.5/10 |
| Space & placement | 5.5/10 | 4.0/10 |
| Light & reflections | 6.0/10 | 5.0/10 |
| Purposeful detail | 4.5/10 | 3.0/10 |
| Artistry & character | 5.0/10 | 4.0/10 |
| Materials & effects | 4.5/10 | 4.0/10 |
| Visual integrity | 6.0/10 | 6.0/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


GPT-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.
MiMo-V2.6-Pro
A readable sunset beach with clear requested subjects, appealing framing and purposeful accessories. Schematic anatomy, flattened foreground objects, repetitive water highlights and sparse directional shadows limit construction and physical depth. The kite's unresolved anchor also constrains integrity.
| Category | GPT-6 Sol | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 8.5/10 | 8.5/10 |
| Anatomy & construction | 7.0/10 | 5.0/10 |
| Space & placement | 7.0/10 | 6.0/10 |
| Light & reflections | 6.5/10 | 6.5/10 |
| Purposeful detail | 7.0/10 | 6.5/10 |
| Artistry & character | 6.0/10 | 5.0/10 |
| Materials & effects | 6.5/10 | 6.0/10 |
| Visual integrity | 7.5/10 | 6.0/10 |
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-6 Sol
This benchmark has not been assessed yet.
MiMo-V2.6-Pro
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-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.
MiMo-V2.6-Pro
A coherent, cheerful cartoon with recognizable animals, readable steering contact and useful small details. The dog's orientation follows the craft more successfully than a wholly frontal pose would. Simple anatomy, weak raccoon grip and compressed seating contacts still limit physical credibility. Gradients and spray provide polish without resolving complex construction.
| Category | GPT-6 Sol | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 7.5/10 | 7.0/10 |
| Anatomy & construction | 6.5/10 | 5.0/10 |
| Space & placement | 7.5/10 | 5.5/10 |
| Light & reflections | 6.0/10 | 5.5/10 |
| Purposeful detail | 7.5/10 | 6.0/10 |
| Artistry & character | 6.5/10 | 4.0/10 |
| Materials & effects | 7.5/10 | 5.5/10 |
| Visual integrity | 8.0/10 | 4.5/10 |
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-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.
MiMo-V2.6-Pro
The distinctive bill, continuous silhouette and detailed wheels establish a readable pelican cyclist. Shaped feathers and soft shading add character, but jointless legs, crowded pedal contacts, absent steering contact and loosely directional lighting limit the construction. The comparisons support retaining the baseline category scores.
| Category | GPT-6 Sol | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 9.0/10 | 6.5/10 |
| Anatomy & construction | 7.5/10 | 5.0/10 |
| Space & placement | 8.0/10 | 6.0/10 |
| Light & reflections | 7.0/10 | 5.5/10 |
| Purposeful detail | 8.0/10 | 6.0/10 |
| Artistry & character | 8.5/10 | 6.0/10 |
| Materials & effects | 7.0/10 | 5.5/10 |
| Visual integrity | 8.5/10 | 6.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.