STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Beam 1.0 501B A23B vs Grok 4.7

Grok 4.7 leads Beam 1.0 501B A23B by 15.3 points on StealthMark, 47.2 to 31.9. It leads on 8 of 9 benchmarks, including both games, and Beam 1.0 501B A23B on 1. Grok 4.7 scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

31.9/100Overall rank 42/53
47.2/100Overall rank 22/53

General Intelligence

30.9/100
48.4/100

Visual Intelligence

33.8/100
44.8/100

Reasoning efficiency

On every task, result quality and reasoning tokens are each compared with all measured models and weighed equally. Each dot is one model.

Single-step reasoning Result quality weighed against reasoning tokens on a single problem

Multi-step reasoning Result quality weighed against reasoning tokens across connected steps, as in agentic workflows

  • Grok 4.7

Open or local

Open modelApache 2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Beam 1.0 501B A23B
  • Grok 4.7
  • Other models
  • Median

DATASHEET

Specs and pricing

Beam 1.0 501B A23B is 6× cheaper per output token, takes 2.1× more context and runs 5.2× faster in our speed test. Grok 4.7 scores higher on StealthMark.

  • Beam 1.0 501B A23B
  • Grok 4.7
  • Other models
  • Median
PricePer 1M output tokens, input below
Beam 1.0 501B A23B: $16× cheaper$0.25 inputGrok 4.7: $6$2 input
Context windowTokens per request, max output below
Beam 1.0 501B A23B: 1M2.1× larger128K max outputGrok 4.7: 500K
Output speedTokens per second, our measurement
Beam 1.0 501B A23B: 9725.2× fastertokens/sGrok 4.7: 185tokens/s
SizeTotal and active parameters
Beam 1.0 501B A23B: 501B23.4B activeGrok 4.7: Not disclosed
Developer
Reflection AISpaceXAI
Released
16 Oct 202621 Sep 2026
Origin
United StatesBoth
Input → output
Text → textText, image → text
Architecture
Sparse mixture-of-experts transformer; 52 layers (3 dense, 49 MoE), 256 experts with 8 selected per token; gated GQA and sliding-window attentionNot published

Full datasheets, every price and sourceBeam 1.0 501B A23B ↗Grok 4.7 ↗

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.

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

Survived 1 of 3
Foresight: complete playing field
Level 39 ptsTurn 20 / 20

Grok 4.7 72.6/100Rank 3/47

Survived 3 of 3
Foresight: complete playing field
Level 316 ptsTurn 20 / 20

Points per level

LevelBeam 1.0 501B A23BGrok 4.7
Level 1Second Thoughts
18 ptsOut of lives
25 ptsSurvived
Level 2Pressure Pot
9 ptsOut of lives
13 ptsSurvived
Level 3Hide or Flight
9 ptsSurvived
16 ptsSurvived

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.

Beam 1.0 501B A23B 37.3/100Rank 29/48

Cleared 2 of 5
Latch: complete playing field
Level 55 ptsTurn 30 / 40

Grok 4.7 65.4/100Rank 18/48

Cleared 4 of 5
Latch: complete playing field
Level 520.4 ptsTurn 28 / 40

Points per level

LevelBeam 1.0 501B A23BGrok 4.7
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.6 ptsCleared
9.8 ptsCleared
Level 3Relay vault
11.2 ptsFinished early
11.6 ptsFinished early
Level 4Passing bay
3.6 ptsFinished early
18.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
5 ptsFinished early
20.4 ptsCleared

Newton's Mirror

Same task instructions

Physics, perspective and recursive reflections, tested together. Explore the test ↗

The judgment

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.

Grok 4.7

Some sphere reflections are correctly placed, with useful size progression and a floor image. Their overlapping side continuations and inverted floor paint order provide additional local optical cues. The gross paint sequence is recognizable, although crimson is a little too low. Incorrect lamp projections and absent nested and receding imagery still leave the mirror system largely incomplete.

Score breakdown

CategoryBeam 1.0 501B A23BGrok 4.7
State at 600 ms20.5/2523.0/25
Camera and placement11.5/1512.5/15
Reflections2.0/12026.0/120
Materials and scale3.0/106.5/10
Floor-damage reward0.0/100.0/10

Benchmark task

A spinning metal sphere and paint in a mirrored room test physical reasoning, perspective and consistency across repeated reflections.

Selfie

Different task instructions

Visual construction and creative interpretation.

The judgment

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.

Grok 4.7

The bold spiral dominates an appealing, restrained silhouette, with crisp angular turns and subtle charcoal highlights. However, a visible background gap separates the shell from the body, making the shell appear suspended. The connected head and delicate eye stalks read clearly, while shading and small features remain simple.

Score breakdown

CategoryBeam 1.0 501B A23BGrok 4.7
Task & likeness4.0/107.0/10
Anatomy & construction3.5/105.0/10
Space & placement5.5/105.5/10
Light & reflections5.5/104.0/10
Purposeful detail4.5/102.5/10
Artistry & character4.0/103.5/10
Materials & effects4.5/102.5/10
Visual integrity7.0/107.5/10

Benchmark task

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.

Grok 4.7

A dark snail with a geometric spiral shell tests silhouette, curved construction and restrained material shading.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

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.

Grok 4.7

Dark clothing, overlapping hands and a restrained smile make the reference recognizable. The broad frontal face, elongated neck and oversized head weaken likeness and anatomical proportion; rounded hands lack convincing fingers. Gentle facial shading suggests volume, while clothing and landscape remain flat. Angular veil overlaps and a hard horizontal background boundary weaken the finish.

Score breakdown

CategoryBeam 1.0 501B A23BGrok 4.7
Task & likeness0.0/102.0/10
Anatomy & construction0.0/102.0/10
Space & placement0.0/103.0/10
Light & reflections0.5/101.5/10
Purposeful detail0.0/103.0/10
Artistry & character0.0/102.5/10
Materials & effects0.0/102.0/10
Visual integrity0.0/103.0/10

Benchmark task

An SVG interpretation of the Mona Lisa tests facial likeness, anatomy and the composition of a familiar portrait.

Beach

Different task instructions

Creativity, perspective and visual beauty.

The judgment

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.

Grok 4.7

The warm sunset, blue water and scattered beach activities create a cheerful, readable composition. Animals and equipment use basic silhouettes, with limited anatomical detail and grounding. The sun reflection forms a rigid tapered strip, and foreground objects lack cast shadows. Clean shapes support the illustration, but depth, materials and drawing complexity remain modest.

Score breakdown

CategoryBeam 1.0 501B A23BGrok 4.7
Task & likeness7.0/107.5/10
Anatomy & construction5.0/104.5/10
Space & placement6.0/105.5/10
Light & reflections5.0/106.0/10
Purposeful detail5.5/105.0/10
Artistry & character4.0/103.5/10
Materials & effects5.0/104.5/10
Visual integrity5.0/106.0/10

Benchmark task

A busy shoreline at sunset tests scene composition, animal forms and the relationship between light and water reflections.

Ground Truth

Different task instructions

Physical reasoning, light and visual reconstruction.

The judgment

Beam 1.0 501B A23B

This benchmark has not been assessed yet.

Grok 4.7

This benchmark has not been assessed yet.

Benchmark task

A plank, computer mouse and blueberry in a steel room test physical stability, spatial relationships, materials and lighting.

Raccoon

Different task instructions

Scene composition and interacting subjects.

The judgment

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.

Grok 4.7

The raccoon rides clearly on the dog's back, and expressive faces, bright colors and a readable orange hull create a playful composition. Steering is unresolved: the dog's visible paws rest on the deck rather than grasping the controls. Simple body shapes and ribbonlike wake limit construction and movement. The glowing sun produces little corresponding illumination or reflection.

Score breakdown

CategoryBeam 1.0 501B A23BGrok 4.7
Task & likeness5.0/107.0/10
Anatomy & construction3.5/104.5/10
Space & placement5.5/106.5/10
Light & reflections4.0/104.5/10
Purposeful detail6.5/105.5/10
Artistry & character3.5/105.5/10
Materials & effects5.0/105.5/10
Visual integrity6.5/103.5/10

Benchmark task

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.

Pelican

Different task instructions

Subject construction and spatial relationships.

The judgment

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.

Grok 4.7

The pelican reads clearly through its long bill, throat pouch and curved neck. Clean pastel shapes and balanced scenery make an appealing illustration. The riding mechanism is less convincing: feet lack clear pedal contact, steering is unresolved, and the frame lacks a coherent drivetrain. Simple shading and sparse feather detail limit depth and finish.

Score breakdown

CategoryBeam 1.0 501B A23BGrok 4.7
Task & likeness5.5/107.5/10
Anatomy & construction4.5/104.5/10
Space & placement5.0/106.5/10
Light & reflections4.0/106.0/10
Purposeful detail4.0/106.0/10
Artistry & character4.0/105.5/10
Materials & effects4.0/105.5/10
Visual integrity5.5/106.0/10

Benchmark task

A cycling pelican tests anatomy, riding posture and contact between the bird and the bicycle.