STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Beam 1.0 501B A23B vs MiniMax M3.1 Flash (early version)

MiniMax M3.1 Flash (early version) leads Beam 1.0 501B A23B by 13.6 points on StealthMark, 45.5 to 31.9. It leads on 7 of 9 benchmarks and Beam 1.0 501B A23B on 2, including both games. Space Bunny Alpha scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
Model guide ↗

Overall StealthMark

31.9/100Overall rank 42/53
45.5/100Overall rank 26/53

General Intelligence

30.9/100
35.7/100

Visual Intelligence

33.8/100
64.4/100

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

  • MiniMax M3.1 Flash (early version)

Open or local

Open modelApache 2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Beam 1.0 501B A23B
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median

DATASHEET

Specs and pricing

Beam 1.0 501B A23B runs 3.2× faster in our speed test. MiniMax M3.1 Flash (early version) scores higher on StealthMark.

  • Beam 1.0 501B A23B
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median
PricePer 1M output tokens, input below
Beam 1.0 501B A23B: $1$0.25 inputMiniMax M3.1 Flash (early version): No list price
Context windowTokens per request, max output below
Beam 1.0 501B A23B: 1M128K max outputMiniMax M3.1 Flash (early version): Not published
Output speedTokens per second, our measurement
Beam 1.0 501B A23B: 9723.2× fastertokens/sMiniMax M3.1 Flash (early version): 300tokens/s
SizeTotal and active parameters
Beam 1.0 501B A23B: 501B23.4B activeMiniMax M3.1 Flash (early version): Not disclosed
Developer
Reflection AINot published
Released
16 Oct 2026Not published
Origin
United StatesNot published
Input → output
Text → textNot published
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 ↗

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

MiniMax M3.1 Flash (early version) 35.8/100Rank 24/47

Survived 0 of 3
Foresight: complete playing field
Level 38 ptsTurn 19 / 20

Points per level

LevelBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Level 1Second Thoughts
18 ptsOut of lives
16 ptsOut of lives
Level 2Pressure Pot
9 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
8 ptsOut of lives

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

MiniMax M3.1 Flash (early version) 34.4/100Rank 32/48

Cleared 3 of 5
Latch: complete playing field
Level 512.6 ptsTurn 17 / 40

Points per level

LevelBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Level 1Hold the door
5.2 ptsCleared
5 ptsCleared
Level 2Crossfeed
9.6 ptsCleared
9 ptsCleared
Level 3Relay vault
11.2 ptsFinished early
16.2 ptsClearedFinished early · 3 beacons left
Level 4Passing bay
3.6 ptsFinished early
10.4 ptsFinished early
Level 5Second thoughts
5 ptsFinished early
12.6 ptsFinished early

Newton's Mirror

Same task instructions

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

MiniMax M3.1 Flash (early version) 24.9/100 Rank 33/53

Space Bunny Alpha: Newton's Mirror SVG benchmark
29 Sep onwardResult details ↗

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.

MiniMax M3.1 Flash (early version)

Visible panel shapes, curved sphere highlights, rounded side images and a lower continuation beneath the large left image establish recognizable local mirror structure. Their uneven arrangement, missing receding chains and absent nested imagery remain substantial shortcomings. The main sphere's framing is close, but black lacks projected separation and cyan does not establish recent apex contact.

Score breakdown

CategoryBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
State at 600 ms20.5/2511.0/25
Camera and placement11.5/159.0/15
Reflections2.0/12015.5/120
Materials and scale3.0/107.5/10
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.

MiniMax M3.1 Flash (early version) 78.9/100 Rank 3/53

Space Bunny Alpha: Selfie SVG benchmark
29 Sep onwardResult details ↗

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.

MiniMax M3.1 Flash (early version)

The expressive rabbits, lavender moon and diagonal ring create an appealing storybook composition with nearly all requested features. Glossy eyes and pearly highlights work well. The helmet leaves the towering ears unenclosed, the reaching arm has little joint definition, and the spread boots suggest hovering more clearly than pushing off. Repeated scalloped fur marks and broad gradients limit material depth; purple edge halos soften otherwise controlled silhouettes.

Score breakdown

CategoryBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Task & likeness4.0/108.5/10
Anatomy & construction3.5/107.5/10
Space & placement5.5/107.5/10
Light & reflections5.5/108.0/10
Purposeful detail4.5/108.0/10
Artistry & character4.0/108.0/10
Materials & effects4.5/107.5/10
Visual integrity7.0/108.0/10

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.

MiniMax M3.1 Flash (early version)

An astronaut rabbit reaches for a carrot above a small moon while a younger companion peeks into view. The scene tests expressive characters, spatial relationships and material detail.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

MiniMax M3.1 Flash (early version) 49.9/100 Rank 13/53

Space Bunny Alpha: Mona Lisa SVG benchmark
29 Sep onwardResult details ↗

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.

MiniMax M3.1 Flash (early version)

The dark clothing, folded hands and muted landscape make the reference recognizable. Replication is limited by the broad frontal face, oversized head, explicit smile and simplified landscape. Arms connect coherently, but overlapping hands lack convincing finger construction. Soft gradients suggest volume and atmospheric depth; clothing folds and facial features remain schematic.

Score breakdown

CategoryBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Task & likeness0.0/104.5/10
Anatomy & construction0.0/105.0/10
Space & placement0.0/105.5/10
Light & reflections0.5/106.0/10
Purposeful detail0.0/104.0/10
Artistry & character0.0/105.0/10
Materials & effects0.0/104.5/10
Visual integrity0.0/105.5/10

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.

MiniMax M3.1 Flash (early version) 67.8/100 Rank 20/53

Space Bunny Alpha: Beach SVG benchmark
29 Sep onwardResult details ↗

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.

MiniMax M3.1 Flash (early version)

A cheerful, coherent beach illustration with a strong sunset focal point, varied animals and readable small accessories. Connected flamingo legs and grounded foreground objects support the scene. Construction remains schematic, especially the airborne marine animal; its jump lacks clear water displacement. The sun reflection is effective but geometrically rigid, while shadows and material textures provide limited depth.

Score breakdown

CategoryBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Task & likeness7.0/108.5/10
Anatomy & construction5.0/106.0/10
Space & placement6.0/106.0/10
Light & reflections5.0/107.0/10
Purposeful detail5.5/106.5/10
Artistry & character4.0/106.5/10
Materials & effects5.0/106.0/10
Visual integrity5.0/107.5/10

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.

MiniMax M3.1 Flash (early version) 42.7/100 Rank 22/53

Space Bunny Alpha: Ground Truth SVG benchmark
29 Sep onwardResult details ↗

The judgment

Beam 1.0 501B A23B

This benchmark has not been assessed yet.

MiniMax M3.1 Flash (early version)

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.

MiniMax M3.1 Flash (early version)

The raccoon clearly rides on the dog's back, and the dog's paws reach a connected steering assembly. Expressive faces, controlled outlines and layered mountains make an appealing illustration. The seated anatomy and hull geometry are simplified, while the sunset has little corresponding reflection or directional shading. Curved spray conveys motion, although several splash ribbons look decorative.

Score breakdown

CategoryBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Task & likeness5.0/108.0/10
Anatomy & construction3.5/107.5/10
Space & placement5.5/107.5/10
Light & reflections4.0/106.5/10
Purposeful detail6.5/107.5/10
Artistry & character3.5/107.0/10
Materials & effects5.0/107.0/10
Visual integrity6.5/108.5/10

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.

MiniMax M3.1 Flash (early version) 68.0/100 Rank 21/53

Space Bunny Alpha: Pelican SVG benchmark
29 Sep onwardResult details ↗

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.

MiniMax M3.1 Flash (early version)

The large pouched bill clearly identifies the pelican, and the balanced bicycle silhouette makes the action readable. Attached legs reach the crank area, but overlapping feet and crank lines leave pedal contact ambiguous. Consistent wheel scale, clean contours and a restrained coastal palette support an appealing composition. Lighting and surface treatment remain simple and mostly flat.

Score breakdown

CategoryBeam 1.0 501B A23BMiniMax M3.1 Flash (early version)
Task & likeness5.5/107.5/10
Anatomy & construction4.5/106.5/10
Space & placement5.0/107.5/10
Light & reflections4.0/106.5/10
Purposeful detail4.0/107.0/10
Artistry & character4.0/105.5/10
Materials & effects4.0/106.5/10
Visual integrity5.5/107.5/10

Benchmark task

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