STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Beam 1.0 501B A23B vs Qwen3.6-27B

Qwen3.6-27B leads Beam 1.0 501B A23B by 0.5 points on StealthMark, 32.4 to 31.9. Beam 1.0 501B A23B leads on 5 of 9 benchmarks, including both games, and Qwen3.6-27B on 4. Beam 1.0 501B A23B scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

31.9/100Overall rank 42/53
32.4/100Overall rank 41/53

General Intelligence

30.9/100
25.6/100

Visual Intelligence

33.8/100
43.9/100

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

Open or local

Open modelApache 2.0
Local modelOpen model · Apache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Beam 1.0 501B A23B
  • Qwen3.6-27B
  • Other models
  • Median

DATASHEET

Specs and pricing

Beam 1.0 501B A23B is 3.6× cheaper per output token and runs 10× faster in our speed test. Qwen3.6-27B scores higher on StealthMark. Both take about 1M tokens of context.

  • Beam 1.0 501B A23B
  • Qwen3.6-27B
  • Other models
  • Median
PricePer 1M output tokens, input below
Beam 1.0 501B A23B: $13.6× cheaper$0.25 inputQwen3.6-27B: $3.60$0.60 input
Context windowTokens per request, max output below
Beam 1.0 501B A23B: 1MTied128K max outputQwen3.6-27B: 1.01MTied64K max output
Output speedTokens per second, our measurement
Beam 1.0 501B A23B: 97210× fastertokens/sQwen3.6-27B: 96tokens/s
SizeTotal and active parameters
Beam 1.0 501B A23B: 501B23.4B activeQwen3.6-27B: 27BAll active
Developer
Reflection AIQwen / Alibaba
Released
16 Oct 202622 Apr 2026
Origin
United StatesChina
Input → output
Text → textText, image, video → 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 attentionDense causal language model with vision encoder; hybrid Gated DeltaNet and gated attention; MTP-trained

Full datasheets, every price and sourceBeam 1.0 501B A23B ↗Qwen3.6-27B ↗

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

Qwen3.6-27B 37.8/100Rank 23/47

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

Points per level

LevelBeam 1.0 501B A23BQwen3.6-27B
Level 1Second Thoughts
18 ptsOut of lives
9 ptsOut of lives
Level 2Pressure Pot
9 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
9 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

Qwen3.6-27B 28.5/100Rank 35/48

Cleared 3 of 5
Latch: complete playing field
Level 511 ptsTurn 25 / 40

Points per level

LevelBeam 1.0 501B A23BQwen3.6-27B
Level 1Hold the door
5.2 ptsCleared
4.8 ptsCleared
Level 2Crossfeed
9.6 ptsCleared
8.8 ptsClearedFinished early · 1 beacon left
Level 3Relay vault
11.2 ptsFinished early
16.4 ptsClearedFinished early · 3 beacons left
Level 4Passing bay
3.6 ptsFinished early
13.4 ptsFinished early
Level 5Second thoughts
5 ptsFinished early
11 ptsFinished early

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.

Qwen3.6-27B

The artwork depicts a shaded sphere, distinct paint colors and a separate airborne black blob. Crimson's apex overlap does not establish its earlier interaction and transport, while cyan's recent contact remains unsupported. Horizontal centering supplies limited camera agreement, but the sphere, black blob and prominent panel have substantial placement or projection departures. A few planar echoes provide reflection evidence; isolated patches and gradients replace most of the required mirror structure.

Score breakdown

CategoryBeam 1.0 501B A23BQwen3.6-27B
State at 600 ms20.5/255.0/25
Camera and placement11.5/155.0/15
Reflections2.0/1208.0/120
Materials and scale3.0/104.0/10
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.

Qwen3.6-27B

An appealing decorative illustration with coordinated ornament, flowing panels and three glowing orbital lights. The arm arrangement reverses the requested sides. Uncertain neck continuity, concealed leg articulation, simplified paws, crowded chest jewelry and shallow surface modeling limit pose clarity and finish.

Score breakdown

CategoryBeam 1.0 501B A23BQwen3.6-27B
Task & likeness4.0/106.5/10
Anatomy & construction3.5/105.0/10
Space & placement5.5/106.5/10
Light & reflections5.5/105.5/10
Purposeful detail4.5/106.0/10
Artistry & character4.0/105.0/10
Materials & effects4.5/105.0/10
Visual integrity7.0/107.0/10

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.

Qwen3.6-27B

A floating capybara in ornate robes tests character anatomy, layered fabric and the placement of surrounding luminous forms.

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.

Qwen3.6-27B

The portrait loosely evokes Mona Lisa through its palette and silhouette. Readable pupils, brows and lips provide limited detail, and the torso remains continuous. The frontal elongated face, unresolved chest-level limb forms, shallow landscape and pervasive blur substantially weaken likeness, anatomy and finish.

Score breakdown

CategoryBeam 1.0 501B A23BQwen3.6-27B
Task & likeness0.0/102.5/10
Anatomy & construction0.0/103.0/10
Space & placement0.0/104.0/10
Light & reflections0.5/104.0/10
Purposeful detail0.0/102.5/10
Artistry & character0.0/102.5/10
Materials & effects0.0/103.0/10
Visual integrity0.0/104.0/10

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.

Qwen3.6-27B

A recognizable sunset beach with balanced palms, clean shapes and effective warm–cool contrast. Small animals and play equipment address the brief, but rudimentary anatomy, uncertain water contacts, sparse reflections and flat materials keep the drawing basic or uneven.

Score breakdown

CategoryBeam 1.0 501B A23BQwen3.6-27B
Task & likeness7.0/107.5/10
Anatomy & construction5.0/105.0/10
Space & placement6.0/105.5/10
Light & reflections5.0/105.5/10
Purposeful detail5.5/104.5/10
Artistry & character4.0/105.5/10
Materials & effects5.0/105.5/10
Visual integrity5.0/107.0/10

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.

Qwen3.6-27B

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.

Qwen3.6-27B

A readable cartoon with balanced colors, clean shapes and a clearly supported raccoon. Continuous body construction and modest shading deserve credit. Rudimentary limbs, unresolved steering connections, stiff gestures and schematic water effects limit physical credibility and finish.

Score breakdown

CategoryBeam 1.0 501B A23BQwen3.6-27B
Task & likeness5.0/104.5/10
Anatomy & construction3.5/103.5/10
Space & placement5.5/106.0/10
Light & reflections4.0/105.5/10
Purposeful detail6.5/105.5/10
Artistry & character3.5/104.0/10
Materials & effects5.0/105.5/10
Visual integrity6.5/102.5/10

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.

Qwen3.6-27B

A lively, coherent illustration with recognizable pelican features, purposeful accessories and useful surface variation. Ambiguous neck layering, uncertain pedal engagement and an unresolved drivetrain limit construction. Aligned wheels and layered scenery establish placement, while inconsistent shadow direction and crowded overlaps constrain finish.

Score breakdown

CategoryBeam 1.0 501B A23BQwen3.6-27B
Task & likeness5.5/107.5/10
Anatomy & construction4.5/104.0/10
Space & placement5.0/106.5/10
Light & reflections4.0/105.0/10
Purposeful detail4.0/106.5/10
Artistry & character4.0/105.5/10
Materials & effects4.0/106.5/10
Visual integrity5.5/106.5/10

Benchmark task

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