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

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-6.1 Terra Low leads Kolibri-1 by 27.7 points on StealthMark, 41.3 to 13.6. It leads on all 7 benchmarks with results for both. 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 sourceKolibri-1 ↗
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.
Kolibri-1
A segmented gray perimeter surrounds a black field containing one large, low-positioned gray sphere and two small colored circles. Rounded volume and restrained paint scale earn partial material credit. The image does not demonstrate the required optical structure, while paint history, airborne black and settled support remain largely unresolved.
| Category | GPT-6.1 Terra Low | Kolibri-1 |
|---|---|---|
| State at 600 ms | 22.0/25 | 9.5/25 |
| Camera and placement | 4.0/15 | 1.5/15 |
| Reflections | 10.0/120 | 0.0/120 |
| 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.
Kolibri-1
A restrained ivory, teal and green palette gives the image simple graphic coherence. Execution remains rudimentary: detached oval wings, ambiguous central anatomy and unclear feeding contact prevent a convincing hummingbird scene. The requested feather structure, botanical detail, lighting and enclosing arch are largely unresolved.
| Category | GPT-6.1 Terra Low | Kolibri-1 |
|---|---|---|
| Task & likeness | 4.0/10 | 2.5/10 |
| Anatomy & construction | 3.5/10 | 2.0/10 |
| Space & placement | 4.5/10 | 3.0/10 |
| Light & reflections | 5.5/10 | 2.0/10 |
| Purposeful detail | 5.5/10 | 1.5/10 |
| Artistry & character | 5.0/10 | 1.5/10 |
| Materials & effects | 5.5/10 | 2.0/10 |
| Visual integrity | 4.0/10 | 5.5/10 |
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.
Kolibri-1
A jewel-coloured hummingbird hovering in flight tests avian anatomy, delicate structure and iridescent surface detail.
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.
Kolibri-1
The candidate offers a clean, highly simplified frontal portrait with warm skin and dark hair. Its oversized oval face, schematic features and unresolved body provide little Mona Lisa likeness. Missing crossed hands, clothing detail and landscape remove essential parts of the original composition; smooth gradients supply only limited volume.
| Category | GPT-6.1 Terra Low | Kolibri-1 |
|---|---|---|
| Task & likeness | 5.0/10 | 0.5/10 |
| 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 | 0.0/10 |
| Artistry & character | 5.5/10 | 0.5/10 |
| Materials & effects | 5.0/10 | 0.5/10 |
| 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.
Kolibri-1
A recognizable sunset beach has an appealing purple-orange gradient and clean geometric edges. Birds and animals remain unresolved, terrain obscures the relationship between shore and water, and reflections are absent. Sparse detail, flat materials and limited activity keep the drawing elementary despite its tidy rendering.
| Category | GPT-6.1 Terra Low | Kolibri-1 |
|---|---|---|
| Task & likeness | 8.0/10 | 2.5/10 |
| Anatomy & construction | 5.5/10 | 0.5/10 |
| Space & placement | 5.5/10 | 3.0/10 |
| Light & reflections | 6.5/10 | 1.0/10 |
| Purposeful detail | 6.0/10 | 0.5/10 |
| Artistry & character | 5.0/10 | 1.0/10 |
| Materials & effects | 5.5/10 | 0.5/10 |
| Visual integrity | 7.5/10 | 3.0/10 |
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-6.1 Terra Low
This benchmark has not been assessed yet.
Kolibri-1
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.
Kolibri-1
Clean shapes and a readable coral platform provide basic graphic clarity, but the animal construction remains fragmented. A recognizable raccoon riding the dog's back, connected steering and convincing water contact are not demonstrated. Sparse detail, flat subjects and absent movement effects support retaining the baseline category assessments.
| Category | GPT-6.1 Terra Low | Kolibri-1 |
|---|---|---|
| Task & likeness | 6.5/10 | 1.5/10 |
| Anatomy & construction | 5.0/10 | 1.0/10 |
| Space & placement | 5.5/10 | 1.0/10 |
| Light & reflections | 4.5/10 | 0.0/10 |
| Purposeful detail | 6.0/10 | 0.5/10 |
| Artistry & character | 5.0/10 | 0.5/10 |
| Materials & effects | 5.0/10 | 0.5/10 |
| Visual integrity | 6.0/10 | 3.5/10 |
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.
Kolibri-1
Clean shapes and aligned wheels establish a readable schematic scene. Pelican likeness, riding support and bicycle mechanics remain substantially unresolved. Sparse detail and flat surfaces limit expression and volume. Strong edge and fill integrity is a separate success and does not repair the construction.
| Category | GPT-6.1 Terra Low | Kolibri-1 |
|---|---|---|
| Task & likeness | 7.0/10 | 1.5/10 |
| Anatomy & construction | 5.5/10 | 1.5/10 |
| Space & placement | 6.0/10 | 1.5/10 |
| Light & reflections | 5.5/10 | 3.0/10 |
| Purposeful detail | 6.5/10 | 1.5/10 |
| Artistry & character | 6.0/10 | 1.0/10 |
| Materials & effects | 6.0/10 | 1.0/10 |
| Visual integrity | 6.0/10 | 3.5/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.