STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Kimi K3.1 Pro vs MAI-Thinking-1

Kimi K3.1 Pro leads MAI-Thinking-1 by 42.6 points on StealthMark, 56.7 to 14.1. It leads on all 9 benchmarks. Kimi K3.1 Pro scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

56.7/100Overall rank 11/53
14.1/100Overall rank 51/53

General Intelligence

53.9/100
7.4/100

Visual Intelligence

62.0/100
24.6/100

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

  • MAI-Thinking-1Single-step reasoning not measured

BENCHMARK BY BENCHMARK

Where each model leads

  • Kimi K3.1 Pro
  • MAI-Thinking-1
  • Other models
  • Median

DATASHEET

Specs and pricing

Kimi K3.1 Pro scores higher on StealthMark, takes 4.1× more context and runs 25% faster in our speed test. MAI-Thinking-1 is 25% cheaper per output token.

  • Kimi K3.1 Pro
  • MAI-Thinking-1
  • Other models
  • Median
PricePer 1M output tokens, input below
Kimi K3.1 Pro: $10$2 inputMAI-Thinking-1: $825% cheaper$2 input
Context windowTokens per request, max output below
Kimi K3.1 Pro: 1M4.1× larger1M max outputMAI-Thinking-1: 256K64K max outputEstimated
Output speedTokens per second, our measurement
Kimi K3.1 Pro: 11725% fastertokens/sMAI-Thinking-1: 93tokens/s
SizeTotal and active parameters
Kimi K3.1 Pro: 2.8T104B activeEstimatedMAI-Thinking-1: 1T35B activeEstimated
Developer
Moonshot AIMicrosoft AI
Released
23 Oct 202612 Aug 2026
Origin
ChinaUnited States
Input → output
Text, image, video → textText → text
Architecture
Post-trained version of Kimi K3, a Mixture-of-Experts modelSparse Mixture-of-Experts (MoE)

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

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

MAI-Thinking-1 6.4/100Rank 44/47

Survived 0 of 3
Foresight: complete playing field
Level 31 ptsTurn 8 / 20

Points per level

LevelKimi K3.1 ProMAI-Thinking-1
Level 1Second Thoughts
15 ptsOut of lives
3 ptsOut of lives
Level 2Pressure Pot
12 ptsOut of lives
3 ptsOut of lives
Level 3Hide or Flight
15 ptsSurvived
1 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

MAI-Thinking-1 3.6/100Rank 44/48

Cleared 1 of 5
Latch: complete playing field
Level 511.8 ptsTurn 16 / 40

Points per level

LevelKimi K3.1 ProMAI-Thinking-1
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
2 ptsOut of turns
Level 3Relay vault
19.2 ptsCleared
2.2 ptsFinished early
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
3 ptsFinished early
Level 5Second thoughts
19.8 ptsCleared
11.8 ptsFinished early

Newton's Mirror

Same task instructions

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

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.

MAI-Thinking-1

The small paint features and convex shading deserve moderate material credit. The sphere remains undersized and low, with black unusually close to its apex. Crimson and cyan do not establish the required impact histories. Faint reflected echoes supply limited optical evidence, while the defining recursive room, nested sphere and emitter structures remain unestablished.

Score breakdown

CategoryKimi K3.1 ProMAI-Thinking-1
State at 600 ms23.5/253.0/25
Camera and placement10.5/152.5/15
Reflections26.0/1204.0/120
Materials and scale7.0/102.0/10
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

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.

MAI-Thinking-1

A recognizable lantern-and-moth illustration with appealing coloured wings and tidy outer contours. Simple construction, a small focal subject and crowded overlaps limit character and depth. The face, six-leg anatomy, seedling and antenna-driven watering joke remain insufficiently readable.

Score breakdown

CategoryKimi K3.1 ProMAI-Thinking-1
Task & likeness8.0/104.0/10
Anatomy & construction5.5/104.5/10
Space & placement6.5/105.0/10
Light & reflections6.5/104.5/10
Purposeful detail7.5/104.0/10
Artistry & character7.0/105.0/10
Materials & effects7.0/105.0/10
Visual integrity7.0/106.0/10

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.

MAI-Thinking-1

A fluffy moth tends a lantern greenhouse amid a gardening mishap. The scene tests insect anatomy, expressive action, translucent wings and the interaction of light with small objects.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

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.

MAI-Thinking-1

A recognizable Mona Lisa motif emerges from dark hair, a pale face and a landscape band. Replication remains weak: the oversized frontal head, broad smile, unresolved torso and missing crossed-hand anatomy diverge substantially from the reference. Simple fills and sparse strokes provide limited volume, material definition or painterly complexity.

Score breakdown

CategoryKimi K3.1 ProMAI-Thinking-1
Task & likeness5.0/101.0/10
Anatomy & construction5.0/100.5/10
Space & placement5.5/101.0/10
Light & reflections6.0/101.5/10
Purposeful detail5.5/101.0/10
Artistry & character6.0/101.5/10
Materials & effects5.0/100.5/10
Visual integrity6.5/103.0/10

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

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.

MAI-Thinking-1

A coherent, cheerful beach scene with balanced placement, clean shapes and controlled sunset colours. Animals, birds and playful accessories are recognizable, but basic dolphin construction, weak grounding, schematic reflections and sparse material detail limit the drawing's accomplishment.

Score breakdown

CategoryKimi K3.1 ProMAI-Thinking-1
Task & likeness8.5/106.0/10
Anatomy & construction5.5/104.0/10
Space & placement5.5/105.0/10
Light & reflections6.5/104.0/10
Purposeful detail6.5/104.5/10
Artistry & character5.5/104.0/10
Materials & effects6.5/103.5/10
Visual integrity7.5/104.5/10

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

Kimi K3.1 Pro

This benchmark has not been assessed yet.

MAI-Thinking-1

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.

MAI-Thinking-1

The recognizable raccoon and clean, shaded forms make a readable cartoon. The dog's steering remains undemonstrated, while ambiguous seating contacts and a minimally constructed craft weaken the central interaction. Controlled gradients and edges deserve credit, but anatomy, purposeful detail and water displacement remain basic.

Score breakdown

CategoryKimi K3.1 ProMAI-Thinking-1
Task & likeness7.0/103.0/10
Anatomy & construction5.5/102.0/10
Space & placement6.0/105.0/10
Light & reflections5.5/103.5/10
Purposeful detail7.0/103.0/10
Artistry & character6.0/102.5/10
Materials & effects6.0/103.5/10
Visual integrity7.0/105.5/10

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

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.

MAI-Thinking-1

A recognizable pelican and bicycle combine clean rounded forms, expressive facial details and effective surface shading. Aligned wheels and soft shadows establish placement, but unresolved pedal engagement, absent steering contact and sparse drivetrain construction weaken the riding action. Limited feather complexity and shallow space constrain an otherwise appealing illustration.

Score breakdown

CategoryKimi K3.1 ProMAI-Thinking-1
Task & likeness8.5/107.0/10
Anatomy & construction7.5/104.5/10
Space & placement6.5/105.5/10
Light & reflections6.5/107.0/10
Purposeful detail7.5/105.0/10
Artistry & character7.5/105.0/10
Materials & effects6.5/104.5/10
Visual integrity7.5/107.0/10

Benchmark task

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