GPT-5.6 Terra 30.1/100Rank 31/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗MiMo-V2.6-Pro leads GPT-5.6 Terra by 2.1 points on StealthMark, 47.9 to 45.8. GPT-5.6 Terra leads on 5 of 9 benchmarks, including Latch, and MiMo-V2.6-Pro on 4, 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
MiMo-V2.6-Pro scores higher on StealthMark, is 14× cheaper per output token and runs 14% faster in our speed test. Both take about 1.05M tokens of context.
Full datasheets, every price and sourceGPT-5.6 Terra ↗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-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.
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-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| State at 600 ms | 24.0/25 | 23.0/25 |
| Camera and placement | 6.0/15 | 12.0/15 |
| Reflections | 7.0/120 | 19.0/120 |
| Materials and scale | 5.5/10 | 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-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.
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-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 7.5/10 | 6.5/10 |
| Anatomy & construction | 5.5/10 | 5.0/10 |
| Space & placement | 7.0/10 | 5.5/10 |
| Light & reflections | 7.5/10 | 6.5/10 |
| Purposeful detail | 6.5/10 | 6.5/10 |
| Artistry & character | 5.5/10 | 5.0/10 |
| Materials & effects | 6.5/10 | 6.5/10 |
| Visual integrity | 5.0/10 | 6.0/10 |
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.
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-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.
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-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 4.0/10 | 3.5/10 |
| Anatomy & construction | 3.0/10 | 3.5/10 |
| Space & placement | 4.5/10 | 4.0/10 |
| Light & reflections | 5.0/10 | 5.0/10 |
| Purposeful detail | 4.0/10 | 3.0/10 |
| Artistry & character | 4.0/10 | 4.0/10 |
| Materials & effects | 4.0/10 | 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-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.
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-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 7.5/10 | 8.5/10 |
| Anatomy & construction | 5.0/10 | 5.0/10 |
| Space & placement | 6.0/10 | 6.0/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 6.5/10 | 6.5/10 |
| Artistry & character | 5.0/10 | 5.0/10 |
| Materials & effects | 5.5/10 | 6.0/10 |
| Visual integrity | 5.0/10 | 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-5.6 Terra
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-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.
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-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 7.5/10 | 7.0/10 |
| Anatomy & construction | 5.0/10 | 5.0/10 |
| Space & placement | 7.0/10 | 5.5/10 |
| Light & reflections | 6.0/10 | 5.5/10 |
| Purposeful detail | 7.0/10 | 6.0/10 |
| Artistry & character | 5.0/10 | 4.0/10 |
| Materials & effects | 7.0/10 | 5.5/10 |
| Visual integrity | 7.5/10 | 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-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.
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-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| Task & likeness | 6.0/10 | 6.5/10 |
| Anatomy & construction | 6.0/10 | 5.0/10 |
| Space & placement | 7.0/10 | 6.0/10 |
| Light & reflections | 6.5/10 | 5.5/10 |
| Purposeful detail | 7.0/10 | 6.0/10 |
| Artistry & character | 6.5/10 | 6.0/10 |
| Materials & effects | 6.5/10 | 5.5/10 |
| Visual integrity | 7.0/10 | 6.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.