Beam 1.0 501B A23B 49.4/100Rank 19/51

STEALTHMARK · HEAD TO HEAD
All comparisons ↗GPT-6.1 Terra Low leads Beam 1.0 501B A23B by 9.4 points on StealthMark, 41.3 to 31.9. It leads on 7 of 9 benchmarks, including Latch, and Beam 1.0 501B A23B on 2, including Foresight. GPT-6.1 Terra Low 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 sourceBeam 1.0 501B A23B ↗
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 ↗


Beam 1.0 501B A23B
Central object placement is fairly close, but the defining mirrored-room structure is missing. The paint colors suggest the required contact order without establishing their different interaction histories. The faint floor oval does not demonstrate valid reflection geometry, so it earns no reflection credit. Rounded volume and glossy paint provide limited material credit despite weak metallic finishes and oversized paint bodies.
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.
| Category | Beam 1.0 501B A23B | GPT-6.1 Terra Low |
|---|---|---|
| State at 600 ms | 20.5/25 | 22.0/25 |
| Camera and placement | 11.5/15 | 4.0/15 |
| Reflections | 2.0/120 | 10.0/120 |
| Materials and scale | 3.0/10 | 6.0/10 |
| 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.


Beam 1.0 501B A23B
An appealing expression and warm palette support a coherent simple cartoon. The central polishing joke is not legible: the cloth is unresolved and the nose sits away from the fan. Pointed radial plates, uncertain limb attachments and weak ground contact limit construction, while restrained surface detail limits material richness.
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.
| Category | Beam 1.0 501B A23B | GPT-6.1 Terra Low |
|---|---|---|
| Task & likeness | 4.0/10 | 4.0/10 |
| Anatomy & construction | 3.5/10 | 3.5/10 |
| Space & placement | 5.5/10 | 4.5/10 |
| Light & reflections | 5.5/10 | 5.5/10 |
| Purposeful detail | 4.5/10 | 5.5/10 |
| Artistry & character | 4.0/10 | 5.0/10 |
| Materials & effects | 4.5/10 | 5.5/10 |
| Visual integrity | 7.0/10 | 4.0/10 |
Beam 1.0 501B A23B
A golden pangolin polishes its oversized amber tail while its nose smudges the same scale. The scene tests expressive anatomy, physical contact and contrasting translucent, polished and soft materials.
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.
Precise visual recall and portrait reconstruction.


Beam 1.0 501B A23B
The candidate shows a faint warm oval against an almost entirely black field. Minimal placement and smooth tonal variation are visible, but the portrait, anatomy, crossed hands and landscape remain unreadable. The saved comparisons provide no specific evidence supporting a change to the baseline categories.
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.
| Category | Beam 1.0 501B A23B | GPT-6.1 Terra Low |
|---|---|---|
| Task & likeness | 0.0/10 | 5.0/10 |
| Anatomy & construction | 0.0/10 | 4.5/10 |
| Space & placement | 0.0/10 | 5.0/10 |
| Light & reflections | 0.5/10 | 6.0/10 |
| Purposeful detail | 0.0/10 | 5.0/10 |
| Artistry & character | 0.0/10 | 5.5/10 |
| Materials & effects | 0.0/10 | 5.0/10 |
| Visual integrity | 0.0/10 | 6.0/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


Beam 1.0 501B A23B
A coherent, cheerful beach illustration fulfills the main subjects with clean shapes and a strong sunset focal point. Its basic geometric construction, ambiguous animal anatomy, shallow depth and schematic lighting limit its accomplishment. Decorative details provide interest without developing intricate forms or convincing physical surfaces.
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.
| Category | Beam 1.0 501B A23B | GPT-6.1 Terra Low |
|---|---|---|
| Task & likeness | 7.0/10 | 8.0/10 |
| Anatomy & construction | 5.0/10 | 5.5/10 |
| Space & placement | 6.0/10 | 5.5/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 5.5/10 | 6.0/10 |
| Artistry & character | 4.0/10 | 5.0/10 |
| Materials & effects | 5.0/10 | 5.5/10 |
| Visual integrity | 5.0/10 | 7.5/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Beam 1.0 501B A23B
This benchmark has not been assessed yet.
GPT-6.1 Terra Low
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.


Beam 1.0 501B A23B
A cheerful, readable illustration with recognizable animals, expressive faces and useful accessories. Simple rounded construction limits complexity, while ambiguous steering attachments and weak hull-to-water contact reduce physical coherence. Lighting and surface effects establish the setting without convincing environmental interaction.
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.
| Category | Beam 1.0 501B A23B | GPT-6.1 Terra Low |
|---|---|---|
| Task & likeness | 5.0/10 | 6.5/10 |
| Anatomy & construction | 3.5/10 | 5.0/10 |
| Space & placement | 5.5/10 | 5.5/10 |
| Light & reflections | 4.0/10 | 4.5/10 |
| Purposeful detail | 6.5/10 | 6.0/10 |
| Artistry & character | 3.5/10 | 5.0/10 |
| Materials & effects | 5.0/10 | 5.0/10 |
| Visual integrity | 6.5/10 | 6.0/10 |
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.


Beam 1.0 501B A23B
A cheerful, clearly readable pelican-and-bicycle illustration with clean contours and balanced composition. Simple geometric construction limits artistic complexity, while ambiguous neck and steering overlaps, merged pedal contacts and an incomplete drivetrain weaken physical coherence.
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.
| Category | Beam 1.0 501B A23B | GPT-6.1 Terra Low |
|---|---|---|
| Task & likeness | 5.5/10 | 7.0/10 |
| Anatomy & construction | 4.5/10 | 5.5/10 |
| Space & placement | 5.0/10 | 6.0/10 |
| Light & reflections | 4.0/10 | 5.5/10 |
| Purposeful detail | 4.0/10 | 6.5/10 |
| Artistry & character | 4.0/10 | 6.0/10 |
| Materials & effects | 4.0/10 | 6.0/10 |
| Visual integrity | 5.5/10 | 6.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.