GPT-6.1 Terra Low 36.1/100Rank 26/51

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Qwen3.8-Max-0902 leads GPT-6.1 Terra Low by 22.0 points on StealthMark, 63.3 to 41.3. It leads on 8 of 9 benchmarks, including both games, and GPT-6.1 Terra Low on 1. Qwen3.8-Max-0902 scores higher on Newton's Mirror, with its largest category advantage in reflections.
See the difference ↘BENCHMARK BY BENCHMARK
DATASHEET
Full datasheets, every price and sourceQwen3.8-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 Low
Deformed colored paint and a separate airborne black body establish readable interaction history. Cyan has travelled too far, framing differs substantially, and the mirror system supplies only elementary bands and oval copies. Missing recursive geometry, nested spherical imagery and emitter mapping remain the dominant weaknesses.
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 Low | Qwen3.8-Max-0902 |
|---|---|---|
| State at 600 ms | 22.0/25 | 23.0/25 |
| Camera and placement | 4.0/15 | 12.0/15 |
| Reflections | 10.0/120 | 29.0/120 |
| Materials and scale | 6.0/10 | 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 Low
Six attached outward-facing heads, delicate scales and soft ivory shading establish an orderly decorative motif. Separate paddle-shaped bodies replace the required interlocking loops and leave no enclosed central hexagon. Surface detail provides interest, but repeated simple forms, schematic faces and limited anatomical modeling constrain the result.
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 Low | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 4.0/10 | 7.5/10 |
| Anatomy & construction | 3.5/10 | 6.5/10 |
| Space & placement | 4.5/10 | 8.0/10 |
| Light & reflections | 5.5/10 | 7.0/10 |
| Purposeful detail | 5.5/10 | 7.5/10 |
| Artistry & character | 5.0/10 | 7.0/10 |
| Materials & effects | 5.5/10 | 7.5/10 |
| Visual integrity | 4.0/10 | 6.5/10 |
GPT-6.1 Terra Low
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 Low
A recognizable, coherent portrait with purposeful facial detail, warm local volume and layered scenery. The frontal pose, enlarged face, merged hands and shallow clothing construction substantially limit replication and drawing skill. The visible successes support retaining the current assessment.
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 Low | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 5.0/10 | 4.5/10 |
| Anatomy & construction | 4.5/10 | 3.5/10 |
| Space & placement | 5.0/10 | 5.0/10 |
| Light & reflections | 6.0/10 | 5.0/10 |
| Purposeful detail | 5.0/10 | 5.0/10 |
| Artistry & character | 5.5/10 | 5.0/10 |
| Materials & effects | 5.0/10 | 3.5/10 |
| Visual integrity | 6.0/10 | 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 Low
A coherent sunset scene demonstrates the beach, animals, birds and reflections. Flowing silhouettes, warm color transitions and intact attachments are its strongest properties. Simplified anatomy, the turtle's elevated viewing angle and symbolic surface effects constrain drawing complexity and physical depth.
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 Low | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 8.0/10 | 8.5/10 |
| Anatomy & construction | 5.5/10 | 7.5/10 |
| Space & placement | 5.5/10 | 7.5/10 |
| Light & reflections | 6.5/10 | 8.0/10 |
| Purposeful detail | 6.0/10 | 7.0/10 |
| Artistry & character | 5.0/10 | 8.0/10 |
| Materials & effects | 5.5/10 | 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 Low
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 Low
Recognizable animals, a coherent craft and sweeping wake make an appealing cartoon. Basic limb construction, weakly demonstrated raccoon seating and limited shared perspective constrain the scene. Small identifying details work well, while lighting and materials remain broadly graphic.
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 Low | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 6.5/10 | 8.0/10 |
| Anatomy & construction | 5.0/10 | 7.0/10 |
| Space & placement | 5.5/10 | 7.0/10 |
| Light & reflections | 4.5/10 | 6.5/10 |
| Purposeful detail | 6.0/10 | 7.0/10 |
| Artistry & character | 5.0/10 | 6.5/10 |
| Materials & effects | 5.0/10 | 6.0/10 |
| Visual integrity | 6.0/10 | 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 Low
A coherent coastal illustration with a distinctive pelican, controlled contours and clearly organised bicycle wheels. Visible saddle support and shaped neck and wing contours earn credit beyond basic geometric construction. Rubbery legs, unresolved pedal contacts and absent steering contact limit the riding action. Lighting and materials remain restrained and spatially shallow.
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 Low | Qwen3.8-Max-0902 |
|---|---|---|
| Task & likeness | 7.0/10 | 8.5/10 |
| Anatomy & construction | 5.5/10 | 6.5/10 |
| Space & placement | 6.0/10 | 7.0/10 |
| Light & reflections | 5.5/10 | 6.0/10 |
| Purposeful detail | 6.5/10 | 7.5/10 |
| Artistry & character | 6.0/10 | 7.5/10 |
| Materials & effects | 6.0/10 | 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.