STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Crouton Alpha vs Kimi K3.1 Pro

Kimi K3.1 Pro leads Crouton Alpha by 8.7 points on StealthMark, 56.7 to 48.0. It leads on 8 of 9 benchmarks, including both games, and Crouton Alpha on 1. Kimi K3.1 Pro scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
Model guide ↗
All results ↗

Overall StealthMark

48.0/100Overall rank 23/56
56.7/100Overall rank 12/56

General Intelligence

43.5/100
53.9/100

Visual Intelligence

56.0/100
62.0/100

Reasoning efficiency

How many reasoning tokens a model needs for the quality it delivers.

Single-step reasoning How much it reasons to understand a task

Multi-step reasoning How much it keeps reasoning as a task goes on

Cost efficiency

How much Performance you get for your money.

  • Crouton AlphaNot measured

BENCHMARK BY BENCHMARK

Where each model leads

  • Crouton Alpha
  • Kimi K3.1 Pro
  • Other models
  • Median

DATASHEET

Specs and pricing

Crouton Alpha runs 50% faster in our speed test. Kimi K3.1 Pro scores higher on StealthMark.

  • Crouton Alpha
  • Kimi K3.1 Pro
  • Other models
  • Median
PricePer 1M output tokens, input below
Crouton Alpha: No list priceKimi K3.1 Pro: $10$2 input
Context windowTokens per request, max output below
Crouton Alpha: Not publishedKimi K3.1 Pro: 1M1M max output
Output speedTokens per second, our measurement
Crouton Alpha: 17550% fastertokens/sKimi K3.1 Pro: 117tokens/s
SizeTotal and active parameters
Crouton Alpha: Not disclosedKimi K3.1 Pro: 2.8T104B activeEstimated
Developer
Not publishedMoonshot AI
Released
Not published23 Oct 2026
Origin
Not publishedChina
Input → output
Not publishedText, image, video → text
Architecture
Not publishedPost-trained version of Kimi K3, a Mixture-of-Experts model

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.

Crouton Alpha 32.3/100Rank 29/52

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

Kimi K3.1 Pro 61.1/100Rank 11/52

Survived 1 of 3
Foresight: complete playing field
Level 315 ptsTurn 20 / 20

Points per level

LevelCrouton AlphaKimi K3.1 Pro
Level 1Second Thoughts
3 ptsOut of lives
15 ptsOut of lives
Level 2Pressure Pot
7 ptsOut of lives
12 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
15 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.

Crouton Alpha 59.5/100Rank 24/53

Cleared 4 of 5
Latch: complete playing field
Level 520.2 ptsTurn 29 / 40

Kimi K3.1 Pro 81.8/100Rank 9/53

Cleared 5 of 5
Latch: complete playing field
Level 519.8 ptsTurn 31 / 40

Points per level

LevelCrouton AlphaKimi K3.1 Pro
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.4 ptsCleared
9.8 ptsCleared
Level 3Relay vault
11.2 ptsFinished early
19.2 ptsCleared
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
18.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
20.2 ptsCleared
19.8 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

Crouton Alpha

The artwork establishes approximate central placement, a separate airborne black blob, and basic wall and floor sphere images. Its defining weaknesses are the largely absent recursive reflection system, missing emitter mappings, satin steel appearance and unresolved paint interaction. The black lateral wedges do not establish a separate viewport, and the hidden floor contact does not establish a gap. The category values remain unchanged.

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.

Score breakdown

CategoryCrouton AlphaKimi K3.1 Pro
State at 600 ms19.0/2523.5/25
Camera and placement11.0/1510.5/15
Reflections21.5/12026.0/120
Materials and scale6.0/107.0/10
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

Crouton Alpha

A cheerful, readable cartoon captures the crouton's signature expression and many specific accessories. Coherent cube geometry and foreground foreshortening support the selfie. Simple construction and flat material treatment limit its sophistication, while the tipping raft, advancing soup and unnoticed soaking remain insufficiently clear.

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.

Score breakdown

CategoryCrouton AlphaKimi K3.1 Pro
Task & likeness6.5/108.0/10
Anatomy & construction5.5/105.5/10
Space & placement6.5/106.5/10
Light & reflections5.5/106.5/10
Purposeful detail7.0/107.5/10
Artistry & character5.0/107.0/10
Materials & effects5.5/107.0/10
Visual integrity7.5/107.0/10

Benchmark task

Crouton Alpha

Character scenes test expression, anatomy, materials and coherent visual construction.

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.

Mona Lisa

Same task instructions

Precise visual recall and portrait reconstruction.

The judgment

Crouton Alpha

A recognizable, coherent simplification with readable eyes, a restrained smile and modest facial volume. Frontal symmetry, an oversized head, capsule-like hands and geometric scenery substantially limit likeness, anatomy and depth. Clean contours preserve basic integrity but do not establish sophisticated construction or finish.

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.

Score breakdown

CategoryCrouton AlphaKimi K3.1 Pro
Task & likeness4.5/105.0/10
Anatomy & construction4.0/105.0/10
Space & placement4.5/105.5/10
Light & reflections5.0/106.0/10
Purposeful detail4.0/105.5/10
Artistry & character4.5/106.0/10
Materials & effects4.0/105.0/10
Visual integrity6.0/106.5/10

Benchmark task

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

Beach

Same task instructions

Creativity, perspective and visual beauty.

The judgment

Crouton Alpha

A colorful, readable sunset beach scene with playful subjects and a clear central reflection. Purposeful equipment and animal details reward inspection, and the principal attachments remain intact. Basic geometric anatomy, mixed viewpoints and sparse directional shadows limit its construction and depth; smooth gradients provide atmosphere with little material differentiation.

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.

Score breakdown

CategoryCrouton AlphaKimi K3.1 Pro
Task & likeness8.5/108.5/10
Anatomy & construction5.0/105.5/10
Space & placement5.5/105.5/10
Light & reflections5.5/106.5/10
Purposeful detail7.0/106.5/10
Artistry & character5.0/105.5/10
Materials & effects5.5/106.5/10
Visual integrity7.0/107.5/10

Benchmark task

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

Ground Truth

Same task instructions

Physical reasoning, light and visual reconstruction.

The judgment

Crouton Alpha

This benchmark has not been assessed yet.

Kimi K3.1 Pro

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

Same task instructions

Scene composition and interacting subjects.

The judgment

Crouton Alpha

A readable cartoon with expressive faces, purposeful markings and clear water motion. Hull shading and an underside shadow establish modest depth. The dog contacts the controls, but the raccoon's frontal pose leaves its seated weight unresolved. Simple anatomy and limited shared perspective constrain the drawing.

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.

Score breakdown

CategoryCrouton AlphaKimi K3.1 Pro
Task & likeness7.0/107.0/10
Anatomy & construction5.0/105.5/10
Space & placement6.0/106.0/10
Light & reflections6.0/105.5/10
Purposeful detail6.5/107.0/10
Artistry & character5.0/106.0/10
Materials & effects5.5/106.0/10
Visual integrity6.0/107.0/10

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

Same task instructions

Subject construction and spatial relationships.

The judgment

Crouton Alpha

A recognizable, expressive pelican cyclist with purposeful feather and bicycle detail. Readable steering reach, connected machinery and modest body shading earn additional credit. Jointless legs, uncertain pedal engagement and unclear seated support keep the central action only partially resolved; shallow space and simple materials further limit the illustration.

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.

Score breakdown

CategoryCrouton AlphaKimi K3.1 Pro
Task & likeness7.0/108.5/10
Anatomy & construction5.0/107.5/10
Space & placement5.5/106.5/10
Light & reflections5.5/106.5/10
Purposeful detail6.5/107.5/10
Artistry & character5.5/107.5/10
Materials & effects5.0/106.5/10
Visual integrity6.0/107.5/10

Benchmark task

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