GPT-6.1 Terra 62.0/100Rank 9/50

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Qwen3.8-Max-0902 leads GPT-6.1 Terra by 2.9 points on StealthMark, 63.3 to 60.4. It leads on 7 of 9 benchmarks, including both games, and GPT-6.1 Terra on 2. Qwen3.8-Max-0902 scores higher on Raccoon, with its largest category advantage in anatomy & construction.
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-6.1 Terra ↗Qwen3.8-Max-0902 ↗
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-6.1 Terra
The sphere, airborne black and first reflected silhouettes preserve important geometry within the portrait frame. Paint deformation, contact order and forward transport are supported, with a small crimson endpoint overshoot. Major optical omissions dominate: short finite reflection sequences and smooth bands replace extensive, spatially ordered mirror imagery. Dark gloss and crisp upper emitter shapes provide partial material credit.
Qwen3.8-Max-0902
The central sphere and differentiated cyan/crimson interaction are supported. The tiny highlighted object above the sphere provides partial airborne-black evidence. The few isolated sphere and panel images preserve limited optical relationships, but most of the repeating mirror-room structure is missing. Core score: 64.5/170; including the floor-damage reward: 64.5/180.
| Category | GPT-6.1 Terra | Qwen3.8-Max-0902 |
|---|---|---|
| State at 600 ms | 23.0/25 | 23.0/25 |
| Camera and placement | 11.0/15 | 12.0/15 |
| Reflections | 33.0/120 | 29.0/120 |
| 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-6.1 Terra
A balanced serpent emblem with six attached outward heads, delicate scales and softly rounded bodies. Its compact silhouette reads clearly, but central routing does not establish every alternating crossing or crisp inward corner. Repetitive texture, limited facial anatomy and weak contact shadows constrain its organic character.
Qwen3.8-Max-0902
A coherent ornamental illustration with balanced framing, appealing color and legible magical accessories. The disconnected raised wrist, incorrect raised-arm side and palm orientation, bear-like facial proportions and shallow material modeling limit execution. Clean decoration and compact spatial balance remain strengths.
| Category | GPT-6.1 Terra | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 7.5/10 | 7.5/10 |
| Anatomy & construction | 6.5/10 | 6.5/10 |
| Space & placement | 6.5/10 | 8.0/10 |
| Light & reflections | 6.0/10 | 7.0/10 |
| Purposeful detail | 6.5/10 | 7.5/10 |
| Artistry & character | 6.5/10 | 7.0/10 |
| Materials & effects | 6.0/10 | 7.5/10 |
| Visual integrity | 6.0/10 | 6.5/10 |
GPT-6.1 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.
Qwen3.8-Max-0902
A floating capybara in ornate robes tests character anatomy, layered fabric and the placement of surrounding luminous forms.
Precise visual recall and portrait reconstruction.


GPT-6.1 Terra
A recognizable interpretation with developed facial shading, shaped sleeve folds and purposeful small features. These strengths support modest upward calibration, while the frontal torso, elongated proportions, schematic finger joints and unresolved seated support keep replication and construction uneven.
Qwen3.8-Max-0902
A recognizable, cohesive Mona Lisa interpretation with readable landscape layers and a restrained expression. Continuous body construction and clean contours support readability, but broad hands, simplified drapery, frontal symmetry and limited facial volume keep the execution basic and uneven.
| Category | GPT-6.1 Terra | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 5.5/10 | 4.5/10 |
| Anatomy & construction | 6.5/10 | 3.5/10 |
| Space & placement | 4.5/10 | 5.0/10 |
| Light & reflections | 6.5/10 | 5.0/10 |
| Purposeful detail | 6.0/10 | 5.0/10 |
| Artistry & character | 6.0/10 | 5.0/10 |
| Materials & effects | 6.0/10 | 3.5/10 |
| Visual integrity | 6.5/10 | 5.0/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


GPT-6.1 Terra
A coherent sunset illustration with clear prompt fulfillment, controlled framing and varied, purposeful small details. Simplified joints, frontal staging, flattened animal forms and weakly directional shadows limit its anatomical, spatial and physical sophistication.
Qwen3.8-Max-0902
A strong stylized beach illustration with coherent sunset color, lively dolphin arcs and balanced activity. Clean contours, readable ground contact and an aligned reflection support the finish. Schematic anatomy, sparse small-subject features, flat materials and repetitive water highlights limit physical depth and refinement.
| Category | GPT-6.1 Terra | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 8.5/10 | 8.5/10 |
| Anatomy & construction | 7.5/10 | 7.5/10 |
| Space & placement | 6.5/10 | 7.5/10 |
| Light & reflections | 5.5/10 | 8.0/10 |
| Purposeful detail | 7.5/10 | 7.0/10 |
| Artistry & character | 7.0/10 | 8.0/10 |
| Materials & effects | 6.5/10 | 6.5/10 |
| Visual integrity | 7.5/10 | 8.5/10 |
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-6.1 Terra
This benchmark has not been assessed yet.
Qwen3.8-Max-0902
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-6.1 Terra
A coherent cartoon with expressive animals, readable steering and a clear wake. Fine facial and hull details reward inspection. The main limits are the boatlike craft, simplified joints, weakly braced frontal raccoon and minimal directional lighting or material depth.
Qwen3.8-Max-0902
The riding arrangement and steering action are readable, supported by coherent visible attachments and useful character details. Clean shapes, strong color separation and clustered foam make the scene appealing and active. Stiff anatomy, crowded controls, limited directional lighting and simple surface treatments constrain sophistication.
| Category | GPT-6.1 Terra | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 6.5/10 | 8.0/10 |
| Anatomy & construction | 5.5/10 | 7.0/10 |
| Space & placement | 6.0/10 | 7.0/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 7.0/10 | 7.0/10 |
| Artistry & character | 6.0/10 | 6.5/10 |
| Materials & effects | 6.0/10 | 6.0/10 |
| Visual integrity | 7.0/10 | 7.5/10 |
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-6.1 Terra
A coherent pelican cyclist with expressive proportions, purposeful feather detail and developed bicycle machinery. Continuous body contours, aligned wheels and readable pedal contacts support the scene. Simplified articulation, shallow modelling and an unresolved steering connection limit construction and placement.
Qwen3.8-Max-0902
An appealing graphic illustration with a recognizable pelican, readable bicycle and clean coastal composition. Steering contact and one connected pedal support the action. Ambiguous neck-to-torso construction, an unclear opposing pedal connection, shallow space and limited material and lighting effects constrain its execution.
| Category | GPT-6.1 Terra | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 7.0/10 | 8.5/10 |
| Anatomy & construction | 7.0/10 | 6.5/10 |
| Space & placement | 6.0/10 | 7.0/10 |
| Light & reflections | 5.5/10 | 6.0/10 |
| Purposeful detail | 7.0/10 | 7.5/10 |
| Artistry & character | 6.5/10 | 7.5/10 |
| Materials & effects | 5.5/10 | 6.0/10 |
| Visual integrity | 6.0/10 | 8.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.