Beam 1.0 501B A23B 49.4/100Rank 18/47

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Beam 1.0 501B A23B leads MAI-Thinking-1 by 17.8 points on StealthMark, 31.9 to 14.1. It leads on 6 of 9 benchmarks, including both games, and MAI-Thinking-1 on 3. Beam 1.0 501B A23B scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.
See the difference ↘On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.
BENCHMARK BY BENCHMARK
DATASHEET
Beam 1.0 501B A23B scores higher on StealthMark, is 8× cheaper per output token, takes 4.1× more context and runs 10× faster in our speed test.
Full datasheets, every price and sourceBeam 1.0 501B A23B ↗MAI-Thinking-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 ↗


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.
MAI-Thinking-1
The small paint features and convex shading deserve moderate material credit. The sphere remains undersized and low, with black unusually close to its apex. Crimson and cyan do not establish the required impact histories. Faint reflected echoes supply limited optical evidence, while the defining recursive room, nested sphere and emitter structures remain unestablished.
| Category | Beam 1.0 501B A23B | MAI-Thinking-1 |
|---|---|---|
| State at 600 ms | 20.5/25 | 3.0/25 |
| Camera and placement | 11.5/15 | 2.5/15 |
| Reflections | 2.0/120 | 4.0/120 |
| Materials and scale | 3.0/10 | 2.0/10 |
| 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.
MAI-Thinking-1
A recognizable lantern-and-moth illustration with appealing coloured wings and tidy outer contours. Simple construction, a small focal subject and crowded overlaps limit character and depth. The face, six-leg anatomy, seedling and antenna-driven watering joke remain insufficiently readable.
| Category | Beam 1.0 501B A23B | MAI-Thinking-1 |
|---|---|---|
| Task & likeness | 4.0/10 | 4.0/10 |
| Anatomy & construction | 3.5/10 | 4.5/10 |
| Space & placement | 5.5/10 | 5.0/10 |
| Light & reflections | 5.5/10 | 4.5/10 |
| Purposeful detail | 4.5/10 | 4.0/10 |
| Artistry & character | 4.0/10 | 5.0/10 |
| Materials & effects | 4.5/10 | 5.0/10 |
| Visual integrity | 7.0/10 | 6.0/10 |
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.
MAI-Thinking-1
A fluffy moth tends a lantern greenhouse amid a gardening mishap. The scene tests insect anatomy, expressive action, translucent wings and the interaction of light with small objects.
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.
MAI-Thinking-1
A recognizable Mona Lisa motif emerges from dark hair, a pale face and a landscape band. Replication remains weak: the oversized frontal head, broad smile, unresolved torso and missing crossed-hand anatomy diverge substantially from the reference. Simple fills and sparse strokes provide limited volume, material definition or painterly complexity.
| Category | Beam 1.0 501B A23B | MAI-Thinking-1 |
|---|---|---|
| Task & likeness | 0.0/10 | 1.0/10 |
| Anatomy & construction | 0.0/10 | 0.5/10 |
| Space & placement | 0.0/10 | 1.0/10 |
| Light & reflections | 0.5/10 | 1.5/10 |
| Purposeful detail | 0.0/10 | 1.0/10 |
| Artistry & character | 0.0/10 | 1.5/10 |
| Materials & effects | 0.0/10 | 0.5/10 |
| Visual integrity | 0.0/10 | 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.


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.
MAI-Thinking-1
A coherent, cheerful beach scene with balanced placement, clean shapes and controlled sunset colours. Animals, birds and playful accessories are recognizable, but basic dolphin construction, weak grounding, schematic reflections and sparse material detail limit the drawing's accomplishment.
| Category | Beam 1.0 501B A23B | MAI-Thinking-1 |
|---|---|---|
| Task & likeness | 7.0/10 | 6.0/10 |
| Anatomy & construction | 5.0/10 | 4.0/10 |
| Space & placement | 6.0/10 | 5.0/10 |
| Light & reflections | 5.0/10 | 4.0/10 |
| Purposeful detail | 5.5/10 | 4.5/10 |
| Artistry & character | 4.0/10 | 4.0/10 |
| Materials & effects | 5.0/10 | 3.5/10 |
| Visual integrity | 5.0/10 | 4.5/10 |
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.
MAI-Thinking-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.


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.
MAI-Thinking-1
The recognizable raccoon and clean, shaded forms make a readable cartoon. The dog's steering remains undemonstrated, while ambiguous seating contacts and a minimally constructed craft weaken the central interaction. Controlled gradients and edges deserve credit, but anatomy, purposeful detail and water displacement remain basic.
| Category | Beam 1.0 501B A23B | MAI-Thinking-1 |
|---|---|---|
| Task & likeness | 5.0/10 | 3.0/10 |
| Anatomy & construction | 3.5/10 | 2.0/10 |
| Space & placement | 5.5/10 | 5.0/10 |
| Light & reflections | 4.0/10 | 3.5/10 |
| Purposeful detail | 6.5/10 | 3.0/10 |
| Artistry & character | 3.5/10 | 2.5/10 |
| Materials & effects | 5.0/10 | 3.5/10 |
| Visual integrity | 6.5/10 | 5.5/10 |
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.


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.
MAI-Thinking-1
A recognizable pelican and bicycle combine clean rounded forms, expressive facial details and effective surface shading. Aligned wheels and soft shadows establish placement, but unresolved pedal engagement, absent steering contact and sparse drivetrain construction weaken the riding action. Limited feather complexity and shallow space constrain an otherwise appealing illustration.
| Category | Beam 1.0 501B A23B | MAI-Thinking-1 |
|---|---|---|
| Task & likeness | 5.5/10 | 7.0/10 |
| Anatomy & construction | 4.5/10 | 4.5/10 |
| Space & placement | 5.0/10 | 5.5/10 |
| Light & reflections | 4.0/10 | 7.0/10 |
| Purposeful detail | 4.0/10 | 5.0/10 |
| Artistry & character | 4.0/10 | 5.0/10 |
| Materials & effects | 4.0/10 | 4.5/10 |
| Visual integrity | 5.5/10 | 7.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.