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

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Hy4 preview leads GPT-6.1 Terra Low by 2.6 points on StealthMark, 43.9 to 41.3. GPT-6.1 Terra Low leads on 5 of 9 benchmarks, including Latch, and Hy4 preview on 4, including Foresight. Hy4 preview 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 sourceHy4 preview ↗
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.
Hy4 preview
The central sphere, compact airborne black bead and broad paint ordering are supported. Contact and transport history remain partly unresolved. The optical system provides only isolated first images and light patches, with little evidence of the extensive ordered reflection structure. Rounded metal and paint gloss are more successful than the reflected contents.
| Category | GPT-6.1 Terra Low | Hy4 preview |
|---|---|---|
| State at 600 ms | 22.0/25 | 18.0/25 |
| Camera and placement | 4.0/15 | 11.5/15 |
| Reflections | 10.0/120 | 29.5/120 |
| Materials and scale | 6.0/10 | 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-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.
Hy4 preview
A cohesive, appealing illustration with a serene face, luminous palette and complete framing. The separated head and torso weaken anatomical coherence, while crowded wing attachments and angular sash folds limit the requested suppleness. Clean execution and decorative detail exceed the clarity of the underlying construction.
| Category | GPT-6.1 Terra Low | Hy4 preview |
|---|---|---|
| Task & likeness | 4.0/10 | 6.0/10 |
| Anatomy & construction | 3.5/10 | 5.5/10 |
| Space & placement | 4.5/10 | 7.5/10 |
| Light & reflections | 5.5/10 | 7.0/10 |
| Purposeful detail | 5.5/10 | 6.5/10 |
| Artistry & character | 5.0/10 | 5.0/10 |
| Materials & effects | 5.5/10 | 7.0/10 |
| 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.
Hy4 preview
A young blue dragon floating among clouds tests curved anatomy, expressive features and the contrast between soft clouds and glossy surfaces.
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.
Hy4 preview
A recognizable but basic Mona Lisa interpretation with a cohesive earthy palette and atmospheric hills. The rigid neck, generic face and unresolved folded-hand pose limit replication and anatomy. Large silhouettes and layer boundaries are comparatively clear, warranting stronger integrity credit than the sparse detail and simplified construction.
| Category | GPT-6.1 Terra Low | Hy4 preview |
|---|---|---|
| Task & likeness | 5.0/10 | 2.5/10 |
| Anatomy & construction | 4.5/10 | 2.5/10 |
| Space & placement | 5.0/10 | 2.5/10 |
| Light & reflections | 6.0/10 | 1.5/10 |
| Purposeful detail | 5.0/10 | 2.5/10 |
| Artistry & character | 5.5/10 | 1.5/10 |
| Materials & effects | 5.0/10 | 2.5/10 |
| Visual integrity | 6.0/10 | 4.0/10 |
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.
Hy4 preview
A cheerful beach illustration fulfills the visible subject requirements with coherent foreground construction and a harmonious sunset palette. Shallow depth, schematic reflections, ambiguous blue airborne forms and exposed geometry beneath the sunset limit its finish. Small accessories are readable, but materials and surface detail remain simplified.
| Category | GPT-6.1 Terra Low | Hy4 preview |
|---|---|---|
| Task & likeness | 8.0/10 | 8.5/10 |
| Anatomy & construction | 5.5/10 | 5.5/10 |
| Space & placement | 5.5/10 | 6.5/10 |
| Light & reflections | 6.5/10 | 5.0/10 |
| Purposeful detail | 6.0/10 | 6.0/10 |
| Artistry & character | 5.0/10 | 5.5/10 |
| Materials & effects | 5.5/10 | 5.0/10 |
| Visual integrity | 7.5/10 | 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-6.1 Terra Low
This benchmark has not been assessed yet.
Hy4 preview
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.
Hy4 preview
A lively cartoon communicates the animal pair traveling across water. Curving waves, rising spray and locally modeled gray forms strengthen motion and volume. Ambiguous seating, simplified joints and unclear control routing limit construction. Competing focal elements, decorative foam and inconsistent illumination leave the finish uneven.
| Category | GPT-6.1 Terra Low | Hy4 preview |
|---|---|---|
| Task & likeness | 6.5/10 | 7.0/10 |
| Anatomy & construction | 5.0/10 | 4.0/10 |
| Space & placement | 5.5/10 | 6.0/10 |
| Light & reflections | 4.5/10 | 6.5/10 |
| Purposeful detail | 6.0/10 | 5.5/10 |
| Artistry & character | 5.0/10 | 4.5/10 |
| Materials & effects | 5.0/10 | 5.5/10 |
| Visual integrity | 6.0/10 | 5.0/10 |
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.
Hy4 preview
A recognizable, playful pelican cyclist with readable wheels, accessories and landscape layers. Form shading and ground shadows provide competent depth. Angular legs, uncertain pedal engagement and absent steering contact limit the riding construction; crowded overlaps and simple surfaces constrain refinement.
| Category | GPT-6.1 Terra Low | Hy4 preview |
|---|---|---|
| Task & likeness | 7.0/10 | 7.5/10 |
| Anatomy & construction | 5.5/10 | 4.5/10 |
| Space & placement | 6.0/10 | 6.5/10 |
| Light & reflections | 5.5/10 | 7.0/10 |
| Purposeful detail | 6.5/10 | 6.0/10 |
| Artistry & character | 6.0/10 | 5.0/10 |
| Materials & effects | 6.0/10 | 5.0/10 |
| Visual integrity | 6.0/10 | 7.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.