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

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-6.1 Terra Low leads Qwen3.5-9B by 30.4 points on StealthMark, 41.3 to 10.9. It leads on all 9 benchmarks. GPT-6.1 Terra Low scores higher on Beach, with its largest category advantage in anatomy & construction.
See the difference ↘BENCHMARK BY BENCHMARK
DATASHEET
Full datasheets, every price and sourceQwen3.5-9B ↗
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.
Qwen3.5-9B
Horizontal centering and a separate airborne black blob are visible. Cyan's recent contact and crimson's forward transport are insufficiently demonstrated, while sphere support remains obscured. The enlarged, lowered sphere substantially changes the composition. The wall and floor sphere images, recursive room structure and curved emitter mappings are almost entirely missing.
| Category | GPT-6.1 Terra Low | Qwen3.5-9B |
|---|---|---|
| State at 600 ms | 22.0/25 | 3.0/25 |
| Camera and placement | 4.0/15 | 4.5/15 |
| Reflections | 10.0/120 | 2.0/120 |
| Materials and scale | 6.0/10 | 3.0/10 |
| 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.
Qwen3.5-9B
Glowing teal spheres and a harmonious palette provide visible strengths, but the central character remains seriously unresolved. A large gap separates head and torso, limbs cannot be traced, and scattered garment shapes fail to establish the ornate costume. The foreground mound replaces the tall enclosing arch. Clean primitive edges do not repair these construction failures.
| Category | GPT-6.1 Terra Low | Qwen3.5-9B |
|---|---|---|
| Task & likeness | 4.0/10 | 3.0/10 |
| Anatomy & construction | 3.5/10 | 2.0/10 |
| Space & placement | 4.5/10 | 3.0/10 |
| Light & reflections | 5.5/10 | 3.5/10 |
| Purposeful detail | 5.5/10 | 2.0/10 |
| Artistry & character | 5.0/10 | 2.0/10 |
| Materials & effects | 5.5/10 | 4.0/10 |
| Visual integrity | 4.0/10 | 3.0/10 |
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.
Qwen3.5-9B
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.
Qwen3.5-9B
A centered dark oval with sparse facial marks forms a simple graphic face, but scarcely replicates the Mona Lisa. The portrait's body, crossed hands, clothing and landscape are missing, while angular facial construction and flat tones lose its likeness, volume and subtle expression.
| Category | GPT-6.1 Terra Low | Qwen3.5-9B |
|---|---|---|
| Task & likeness | 5.0/10 | 0.0/10 |
| Anatomy & construction | 4.5/10 | 0.5/10 |
| Space & placement | 5.0/10 | 0.0/10 |
| Light & reflections | 6.0/10 | 0.0/10 |
| Purposeful detail | 5.0/10 | 0.5/10 |
| Artistry & character | 5.5/10 | 1.0/10 |
| Materials & effects | 5.0/10 | 0.0/10 |
| Visual integrity | 6.0/10 | 0.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


GPT-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.
Qwen3.5-9B
The beach is recognizable, and sweeping shoreline curves provide basic rhythm. Wildlife and playful activity remain poorly resolved, with ambiguous body construction and object contact. The sun glows without corresponding reflections or surface lighting. Fragmented subjects and an unintegrated rectangular panel substantially weaken composition and finish.
| Category | GPT-6.1 Terra Low | Qwen3.5-9B |
|---|---|---|
| Task & likeness | 8.0/10 | 1.5/10 |
| Anatomy & construction | 5.5/10 | 0.5/10 |
| Space & placement | 5.5/10 | 1.5/10 |
| Light & reflections | 6.5/10 | 1.0/10 |
| Purposeful detail | 6.0/10 | 2.5/10 |
| Artistry & character | 5.0/10 | 1.5/10 |
| Materials & effects | 5.5/10 | 0.5/10 |
| Visual integrity | 7.5/10 | 1.5/10 |
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.
Qwen3.5-9B
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.
Qwen3.5-9B
Bright colors, clean individual shapes and basic animal cues make the scene partly recognizable. Back seating, body continuity, steering and jet ski construction remain unresolved. Background gradients and wave rhythm provide some finish, but substantial anatomical, spatial and interaction weaknesses dominate.
| Category | GPT-6.1 Terra Low | Qwen3.5-9B |
|---|---|---|
| Task & likeness | 6.5/10 | 2.5/10 |
| Anatomy & construction | 5.0/10 | 1.0/10 |
| Space & placement | 5.5/10 | 2.0/10 |
| Light & reflections | 4.5/10 | 1.0/10 |
| Purposeful detail | 6.0/10 | 1.5/10 |
| Artistry & character | 5.0/10 | 1.0/10 |
| Materials & effects | 5.0/10 | 1.0/10 |
| Visual integrity | 6.0/10 | 2.5/10 |
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.
Qwen3.5-9B
The oversized bill and orderly spoked wheels make the subject partly recognizable. Clean contours and strong color contrast provide graphic clarity, but unresolved appendages, steering, drivetrain and support dominate the construction. Sparse shading and detail further limit the illustration.
| Category | GPT-6.1 Terra Low | Qwen3.5-9B |
|---|---|---|
| Task & likeness | 7.0/10 | 4.0/10 |
| Anatomy & construction | 5.5/10 | 1.5/10 |
| Space & placement | 6.0/10 | 3.0/10 |
| Light & reflections | 5.5/10 | 1.5/10 |
| Purposeful detail | 6.5/10 | 2.5/10 |
| Artistry & character | 6.0/10 | 1.5/10 |
| Materials & effects | 6.0/10 | 1.5/10 |
| Visual integrity | 6.0/10 | 2.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.