STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Kimi K3.1 Pro vs MiniMax M3.1 Flash (early version)

Kimi K3.1 Pro leads MiniMax M3.1 Flash (early version) by 11.2 points on StealthMark, 56.7 to 45.5. It leads on 6 of 9 benchmarks, including both games, and MiniMax M3.1 Flash (early version) on 3. Kimi K3.1 Pro scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
All results ↗
Model guide ↗

Overall StealthMark

56.7/100Overall rank 11/53
45.5/100Overall rank 26/53

General Intelligence

53.9/100
35.7/100

Visual Intelligence

62.0/100
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)

BENCHMARK BY BENCHMARK

Where each model leads

  • Kimi K3.1 Pro
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median

DATASHEET

Specs and pricing

Kimi K3.1 Pro scores higher on StealthMark. MiniMax M3.1 Flash (early version) runs 2.6× faster in our speed test.

  • Kimi K3.1 Pro
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median
PricePer 1M output tokens, input below
Kimi K3.1 Pro: $10$2 inputMiniMax M3.1 Flash (early version): No list price
Context windowTokens per request, max output below
Kimi K3.1 Pro: 1M1M max outputMiniMax M3.1 Flash (early version): Not published
Output speedTokens per second, our measurement
Kimi K3.1 Pro: 117tokens/sMiniMax M3.1 Flash (early version): 3002.6× fastertokens/s
SizeTotal and active parameters
Kimi K3.1 Pro: 2.8T104B activeEstimatedMiniMax M3.1 Flash (early version): Not disclosed
Developer
Moonshot AINot published
Released
23 Oct 2026Not published
Origin
ChinaNot published
Input → output
Text, image, video → textNot published
Architecture
Post-trained version of Kimi K3, a Mixture-of-Experts modelNot published

Full datasheets, every price and sourceKimi K3.1 Pro ↗

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.

Kimi K3.1 Pro 61.1/100Rank 10/47

Survived 1 of 3
Foresight: complete playing field
Level 315 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

LevelKimi K3.1 ProMiniMax M3.1 Flash (early version)
Level 1Second Thoughts
15 ptsOut of lives
16 ptsOut of lives
Level 2Pressure Pot
12 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
15 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.

Kimi K3.1 Pro 81.8/100Rank 8/48

Cleared 5 of 5
Latch: complete playing field
Level 519.8 ptsTurn 31 / 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

LevelKimi K3.1 ProMiniMax M3.1 Flash (early version)
Level 1Hold the door
5.2 ptsCleared
5 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9 ptsCleared
Level 3Relay vault
19.2 ptsCleared
16.2 ptsClearedFinished early · 3 beacons left
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
10.4 ptsFinished early
Level 5Second thoughts
19.8 ptsCleared
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

Kimi K3.1 Pro

The settled sphere, separate airborne black paint and crimson-before-cyan interaction are supported, with a modest crimson travel overshoot. A shared downward framing displacement remains after accounting for the square canvas. The principal limitation is the reflection system: sparse sphere copies and generic curved bands omit most of the ordered mirror-room structure. Materials receive a small upward revision because bounded bright images and dark bands visibly establish some polish, while soft shading and bulky paint remain separate weaknesses.

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

CategoryKimi K3.1 ProMiniMax M3.1 Flash (early version)
State at 600 ms23.5/2511.0/25
Camera and placement10.5/159.0/15
Reflections26.0/12015.5/120
Materials and scale7.0/107.5/10
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

Kimi K3.1 Pro

The transformed reflection, attentive pose and constellation anatomy clearly communicate introspection. Purposeful fine details enrich a coherent composition. Tubular limbs, crowded lower-body overlaps, shallow depth and limited cast lighting keep the overall execution within the competent range.

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

CategoryKimi K3.1 ProMiniMax M3.1 Flash (early version)
Task & likeness8.0/108.5/10
Anatomy & construction5.5/107.5/10
Space & placement6.5/107.5/10
Light & reflections6.5/108.0/10
Purposeful detail7.5/108.0/10
Artistry & character7.0/108.0/10
Materials & effects7.0/107.5/10
Visual integrity7.0/108.0/10

Benchmark task

Kimi K3.1 Pro

An imagined creature encounters its reflection. The scene tests original character design, visual self-interpretation and the relationship between a subject and its reflected image.

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

Kimi K3.1 Pro

A coherent, recognizable interpretation with controlled color and readable landscape layers. Replication is limited by the frontal seated construction, elongated facial proportions and oversized, weakly articulated hands. Smooth shading supplies some volume but little of the reference's subtle expression, fabric structure or atmospheric transitions.

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

CategoryKimi K3.1 ProMiniMax M3.1 Flash (early version)
Task & likeness5.0/104.5/10
Anatomy & construction5.0/105.0/10
Space & placement5.5/105.5/10
Light & reflections6.0/106.0/10
Purposeful detail5.5/104.0/10
Artistry & character6.0/105.0/10
Materials & effects5.0/104.5/10
Visual integrity6.5/105.5/10

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

Kimi K3.1 Pro

A coherent, playful beach illustration with readable animals, an organized composition and an aligned sunset reflection. Connected silhouettes, sand texture and atmospheric effects demonstrate controlled execution. Simplified joints, flattened foreground viewpoints and inconsistent shadows limit anatomical and spatial credibility.

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

CategoryKimi K3.1 ProMiniMax M3.1 Flash (early version)
Task & likeness8.5/108.5/10
Anatomy & construction5.5/106.0/10
Space & placement5.5/106.0/10
Light & reflections6.5/107.0/10
Purposeful detail6.5/106.5/10
Artistry & character5.5/106.5/10
Materials & effects6.5/106.0/10
Visual integrity7.5/107.5/10

Benchmark task

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

Ground Truth

Same 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

Kimi K3.1 Pro

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

Kimi K3.1 Pro

The additional comparisons support retaining the assessment. Readable steering, shaped animal contours and purposeful details coexist with simplified joints, a frontal passenger whose seated weight is weakly conveyed, and limited physical lighting. The angled craft establishes more depth than the riding pose resolves.

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

CategoryKimi K3.1 ProMiniMax M3.1 Flash (early version)
Task & likeness7.0/108.0/10
Anatomy & construction5.5/107.5/10
Space & placement6.0/107.5/10
Light & reflections5.5/106.5/10
Purposeful detail7.0/107.5/10
Artistry & character6.0/107.0/10
Materials & effects6.0/107.0/10
Visual integrity7.0/108.5/10

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

Kimi K3.1 Pro

A characterful coastal illustration with controlled contours and varied feather, accessory and bicycle detail. Layered scenery and subtle shading enrich the presentation. Soft leg articulation, unresolved riding contacts, shallow depth and generalized lighting limit physical precision.

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

CategoryKimi K3.1 ProMiniMax M3.1 Flash (early version)
Task & likeness8.5/107.5/10
Anatomy & construction7.5/106.5/10
Space & placement6.5/107.5/10
Light & reflections6.5/106.5/10
Purposeful detail7.5/107.0/10
Artistry & character7.5/105.5/10
Materials & effects6.5/106.5/10
Visual integrity7.5/107.5/10

Benchmark task

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