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

STEALTHMARK · HEAD TO HEAD
All comparisons ↗Mistral Large 4 leads Beam 1.0 501B A23B by 11.4 points on StealthMark, 43.3 to 31.9. It leads on 8 of 9 benchmarks, including Latch, and Beam 1.0 501B A23B on 1, including Foresight. Mistral Large 4 scores higher on Newton's Mirror, with its largest category advantage in reflections.
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 is 4.2× cheaper per output token and runs 6.5× faster in our speed test. Mistral Large 4 scores higher on StealthMark. Both take about 1M tokens of context.
Full datasheets, every price and sourceBeam 1.0 501B A23B ↗Mistral Large 4 ↗
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.
Mistral Large 4
The central sphere, airborne black and deformed crimson support substantial state and placement credit. Recent cyan contact and crimson transport remain uncertain. Sparse wall patches and glossy gradients provide little evidence of the required extensive mirror system, while the missing centerline lamp and bulky crimson remain visible weaknesses.
| Category | Beam 1.0 501B A23B | Mistral Large 4 |
|---|---|---|
| State at 600 ms | 20.5/25 | 17.0/25 |
| Camera and placement | 11.5/15 | 11.0/15 |
| Reflections | 2.0/120 | 12.0/120 |
| Materials and scale | 3.0/10 | 5.5/10 |
| 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.


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.
Mistral Large 4
An appealing, coherent illustration whose enormous rounded cat anchors the windblown composition. Warm shading and floating sketches communicate the brief well. Simplified paws, faint ear construction, inconsistent wind cues and limited material texture keep the execution below exceptional.
| Category | Beam 1.0 501B A23B | Mistral Large 4 |
|---|---|---|
| Task & likeness | 4.0/10 | 8.0/10 |
| Anatomy & construction | 3.5/10 | 7.0/10 |
| Space & placement | 5.5/10 | 7.5/10 |
| Light & reflections | 5.5/10 | 7.0/10 |
| Purposeful detail | 4.5/10 | 7.0/10 |
| Artistry & character | 4.0/10 | 7.0/10 |
| Materials & effects | 4.5/10 | 7.0/10 |
| Visual integrity | 7.0/10 | 8.0/10 |
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.
Mistral Large 4
A heavy ginger cat stays planted on a terrace as wind carries papers around it. The scene tests weight, expression and the contrast between stable and moving forms.
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.
Mistral Large 4
A recognizable, cleanly rendered interpretation with a restrained palette and some facial modeling. Its enlarged frontal head, simplified expression, compressed low hands and schematic landscape substantially limit likeness and construction. The smooth rendering does not reproduce the painting's nuanced anatomy, clothing or atmospheric depth.
| Category | Beam 1.0 501B A23B | Mistral Large 4 |
|---|---|---|
| Task & likeness | 0.0/10 | 4.0/10 |
| Anatomy & construction | 0.0/10 | 3.5/10 |
| Space & placement | 0.0/10 | 5.0/10 |
| Light & reflections | 0.5/10 | 4.5/10 |
| Purposeful detail | 0.0/10 | 4.0/10 |
| Artistry & character | 0.0/10 | 4.0/10 |
| Materials & effects | 0.0/10 | 4.5/10 |
| Visual integrity | 0.0/10 | 5.5/10 |
An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.
Creativity, perspective and visual beauty.


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.
Mistral Large 4
A clean, appealing beach illustration with clear subject coverage, a cohesive sunset palette and expressive animal details. Bodies and accessories resolve basic construction coherently, although joints remain schematic. Layered shapes establish modest depth; generic oval shadows and flat surfaces limit physical richness. Repeated forms and sparse articulation leave room for more accomplished drawing.
| Category | Beam 1.0 501B A23B | Mistral Large 4 |
|---|---|---|
| Task & likeness | 7.0/10 | 7.5/10 |
| Anatomy & construction | 5.0/10 | 6.0/10 |
| Space & placement | 6.0/10 | 7.0/10 |
| Light & reflections | 5.0/10 | 6.5/10 |
| Purposeful detail | 5.5/10 | 6.0/10 |
| Artistry & character | 4.0/10 | 6.0/10 |
| Materials & effects | 5.0/10 | 6.5/10 |
| Visual integrity | 5.0/10 | 8.0/10 |
A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.
Physical reasoning, light and visual reconstruction.


Beam 1.0 501B A23B
This benchmark has not been assessed yet.
Mistral Large 4
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.
Mistral Large 4
The central interaction is clear, with recognizable animals, expressive faces and a coherent sunset composition. Clean contours and readable accessories give the cartoon polish. Simplified joints, uncertain steering attachment, shallow hull volume and limited directional lighting constrain its physical resolution.
| Category | Beam 1.0 501B A23B | Mistral Large 4 |
|---|---|---|
| Task & likeness | 5.0/10 | 8.5/10 |
| Anatomy & construction | 3.5/10 | 6.5/10 |
| Space & placement | 5.5/10 | 7.0/10 |
| Light & reflections | 4.0/10 | 5.5/10 |
| Purposeful detail | 6.5/10 | 7.5/10 |
| Artistry & character | 3.5/10 | 6.5/10 |
| Materials & effects | 5.0/10 | 6.5/10 |
| Visual integrity | 6.5/10 | 8.0/10 |
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.
Mistral Large 4
A coherent, appealing pelican illustration with a continuous body silhouette, readable bicycle and grounded wheels. Simplified legs and ambiguous steering and pedal connections limit construction. Clean shapes and expressive accessories succeed, while shallow depth, modest lighting and sparse material differentiation leave substantial room for refinement.
| Category | Beam 1.0 501B A23B | Mistral Large 4 |
|---|---|---|
| Task & likeness | 5.5/10 | 8.5/10 |
| Anatomy & construction | 4.5/10 | 6.0/10 |
| Space & placement | 5.0/10 | 7.0/10 |
| Light & reflections | 4.0/10 | 6.5/10 |
| Purposeful detail | 4.0/10 | 7.0/10 |
| Artistry & character | 4.0/10 | 7.0/10 |
| Materials & effects | 4.0/10 | 6.5/10 |
| Visual integrity | 5.5/10 | 8.0/10 |
A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.