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

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-6.1 Terra Low leads Muse Spark 1.3 by 1.5 points on StealthMark, 41.3 to 39.8. Muse Spark 1.3 leads on 5 of 9 benchmarks, including Foresight, and GPT-6.1 Terra Low on 4, including Latch. GPT-6.1 Terra Low scores higher on Mona Lisa, with its largest category advantage in prompt & likeness.
See the difference ↘BENCHMARK BY BENCHMARK
DATASHEET
Full datasheets, every price and sourceMuse Spark 1.3 ↗
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.
Muse Spark 1.3
The paint state is incorrectly and poorly drawn, despite a recognizable sphere-and-paint setup. The oversized sphere, oversized compact paint bodies, and blurred wall and floor images further limit the result. Isolated reflection cues provide very little support for the required repeated virtual rooms, nested spherical imagery or emitter mapping.
| Category | GPT-6.1 Terra Low | Muse Spark 1.3 |
|---|---|---|
| State at 600 ms | 22.0/25 | 6.0/25 |
| Camera and placement | 4.0/15 | 8.5/15 |
| Reflections | 10.0/120 | 5.5/120 |
| Materials and scale | 6.0/10 | 4.0/10 |
| 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.
Muse Spark 1.3
The luminous creature and geometric mirror counterpart communicate self-recognition through a coherent palette and expressive eyes. The transformed reflection is purposeful. Simple oval anatomy, ambiguous reaching-arm construction, shallow spatial staging and limited illumination of nearby surfaces keep the illustration below exceptional execution.
| Category | GPT-6.1 Terra Low | Muse Spark 1.3 |
|---|---|---|
| Task & likeness | 4.0/10 | 8.0/10 |
| Anatomy & construction | 3.5/10 | 5.0/10 |
| Space & placement | 4.5/10 | 6.5/10 |
| Light & reflections | 5.5/10 | 7.0/10 |
| Purposeful detail | 5.5/10 | 6.5/10 |
| Artistry & character | 5.0/10 | 5.5/10 |
| Materials & effects | 5.5/10 | 6.5/10 |
| Visual integrity | 4.0/10 | 7.5/10 |
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.
Muse Spark 1.3
An imagined creature encounters its reflection. The scene tests original character design, visual self-interpretation and the relationship between a subject and its reflected image.
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.
Muse Spark 1.3
Dark hair, a restrained smile and overlapping hands suggest Mona Lisa, but replication is weak. The face is markedly elongated, the hands are oval pads with faint finger strokes, and the atmospheric landscape is absent. Soft gradients provide basic volume, while the frontal symmetry, shallow space and sparse clothing detail limit the portrait’s drawing quality.
| Category | GPT-6.1 Terra Low | Muse Spark 1.3 |
|---|---|---|
| Task & likeness | 5.0/10 | 1.0/10 |
| Anatomy & construction | 4.5/10 | 1.5/10 |
| Space & placement | 5.0/10 | 1.5/10 |
| Light & reflections | 6.0/10 | 1.5/10 |
| Purposeful detail | 5.0/10 | 1.0/10 |
| Artistry & character | 5.5/10 | 1.5/10 |
| Materials & effects | 5.0/10 | 1.5/10 |
| Visual integrity | 6.0/10 | 3.0/10 |
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.
Muse Spark 1.3
The warm sunset, framing palms and colorful beach accessories create an appealing scene with the requested animals, birds and reflections. Construction remains schematic: the raised hand misses the kite string, and a doglike silhouette hangs above the water without clear support. The sun reflection establishes a focal path, but shadows and materials lack depth. An unexplained horizontal bar crosses the sun.
| Category | GPT-6.1 Terra Low | Muse Spark 1.3 |
|---|---|---|
| Task & likeness | 8.0/10 | 6.5/10 |
| Anatomy & construction | 5.5/10 | 3.0/10 |
| Space & placement | 5.5/10 | 5.5/10 |
| Light & reflections | 6.5/10 | 6.5/10 |
| Purposeful detail | 6.0/10 | 5.0/10 |
| Artistry & character | 5.0/10 | 3.5/10 |
| Materials & effects | 5.5/10 | 3.0/10 |
| Visual integrity | 7.5/10 | 3.5/10 |
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.
Muse Spark 1.3
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.
Muse Spark 1.3
The raccoon clearly rides on the dog's back, and the dog's paws reach the jet ski controls. Expressive faces and bright colors make the scene appealing. Simplified joints, crowded steering geometry and shallow hull perspective limit construction. The sun has no corresponding water reflection, and the splash shapes convey speed more clearly than convincing displacement.
| Category | GPT-6.1 Terra Low | Muse Spark 1.3 |
|---|---|---|
| Task & likeness | 6.5/10 | 8.5/10 |
| Anatomy & construction | 5.0/10 | 6.5/10 |
| Space & placement | 5.5/10 | 7.0/10 |
| Light & reflections | 4.5/10 | 5.0/10 |
| Purposeful detail | 6.0/10 | 6.5/10 |
| Artistry & character | 5.0/10 | 5.5/10 |
| 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.
Muse Spark 1.3
The pelican and bicycle are immediately recognizable, with an expressive face, bold bill and cheerful composition. Both legs connect to the body and reach pedal-like supports, but articulation, saddle support and wing contact with the handlebar remain unclear. Wheel alignment and layering are coherent. Simple landscape shapes, generic shadows and limited material variation constrain the finish.
| Category | GPT-6.1 Terra Low | Muse Spark 1.3 |
|---|---|---|
| Task & likeness | 7.0/10 | 8.5/10 |
| Anatomy & construction | 5.5/10 | 6.0/10 |
| Space & placement | 6.0/10 | 7.0/10 |
| Light & reflections | 5.5/10 | 6.0/10 |
| Purposeful detail | 6.5/10 | 7.0/10 |
| Artistry & character | 6.0/10 | 5.5/10 |
| Materials & effects | 6.0/10 | 6.5/10 |
| Visual integrity | 6.0/10 | 7.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.