STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Grok 4.7 vs Kimi K3.1 Pro

Kimi K3.1 Pro leads Grok 4.7 by 9.5 points on StealthMark, 56.7 to 47.2. It leads on 8 of 9 benchmarks, including Latch, and Grok 4.7 on 1, including Foresight. Kimi K3.1 Pro scores higher on Mona Lisa, with its largest category advantage in anatomy & construction.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

47.2/100Overall rank 22/53
56.7/100Overall rank 11/53

General Intelligence

48.4/100
53.9/100

Visual Intelligence

44.8/100
62.0/100

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

  • Grok 4.7

BENCHMARK BY BENCHMARK

Where each model leads

  • Grok 4.7
  • Kimi K3.1 Pro
  • Other models
  • Median

DATASHEET

Specs and pricing

Grok 4.7 is 1.7× cheaper per output token and runs 1.6× faster in our speed test. Kimi K3.1 Pro scores higher on StealthMark and takes 2.1× more context.

  • Grok 4.7
  • Kimi K3.1 Pro
  • Other models
  • Median
PricePer 1M output tokens, input below
Grok 4.7: $61.7× cheaper$2 inputKimi K3.1 Pro: $10$2 input
Context windowTokens per request, max output below
Grok 4.7: 500KKimi K3.1 Pro: 1M2.1× larger1M max output
Output speedTokens per second, our measurement
Grok 4.7: 1851.6× fastertokens/sKimi K3.1 Pro: 117tokens/s
SizeTotal and active parameters
Grok 4.7: Not disclosedKimi K3.1 Pro: 2.8T104B activeEstimated
Developer
SpaceXAIMoonshot AI
Released
21 Sep 202623 Oct 2026
Origin
United StatesChina
Input → output
Text, image → textText, image, video → text
Architecture
Not publishedPost-trained version of Kimi K3, a Mixture-of-Experts model

Full datasheets, every price and sourceGrok 4.7 ↗Kimi 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.

Grok 4.7 72.6/100Rank 3/47

Survived 3 of 3
Foresight: complete playing field
Level 316 ptsTurn 20 / 20

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

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

Points per level

LevelGrok 4.7Kimi K3.1 Pro
Level 1Second Thoughts
25 ptsSurvived
15 ptsOut of lives
Level 2Pressure Pot
13 ptsSurvived
12 ptsOut of lives
Level 3Hide or Flight
16 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.

Grok 4.7 65.4/100Rank 18/48

Cleared 4 of 5
Latch: complete playing field
Level 520.4 ptsTurn 28 / 40

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

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

Points per level

LevelGrok 4.7Kimi K3.1 Pro
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9.8 ptsCleared
Level 3Relay vault
11.6 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
20.4 ptsCleared
19.8 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

Grok 4.7

Some sphere reflections are correctly placed, with useful size progression and a floor image. Their overlapping side continuations and inverted floor paint order provide additional local optical cues. The gross paint sequence is recognizable, although crimson is a little too low. Incorrect lamp projections and absent nested and receding imagery still leave the mirror system largely incomplete.

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

CategoryGrok 4.7Kimi K3.1 Pro
State at 600 ms23.0/2523.5/25
Camera and placement12.5/1510.5/15
Reflections26.0/12026.0/120
Materials and scale6.5/107.0/10
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

Grok 4.7

The bold spiral dominates an appealing, restrained silhouette, with crisp angular turns and subtle charcoal highlights. However, a visible background gap separates the shell from the body, making the shell appear suspended. The connected head and delicate eye stalks read clearly, while shading and small features remain simple.

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

CategoryGrok 4.7Kimi K3.1 Pro
Task & likeness7.0/108.0/10
Anatomy & construction5.0/105.5/10
Space & placement5.5/106.5/10
Light & reflections4.0/106.5/10
Purposeful detail2.5/107.5/10
Artistry & character3.5/107.0/10
Materials & effects2.5/107.0/10
Visual integrity7.5/107.0/10

Benchmark task

Grok 4.7

A dark snail with a geometric spiral shell tests silhouette, curved construction and restrained material shading.

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

Grok 4.7

Dark clothing, overlapping hands and a restrained smile make the reference recognizable. The broad frontal face, elongated neck and oversized head weaken likeness and anatomical proportion; rounded hands lack convincing fingers. Gentle facial shading suggests volume, while clothing and landscape remain flat. Angular veil overlaps and a hard horizontal background boundary weaken the 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

CategoryGrok 4.7Kimi K3.1 Pro
Task & likeness2.0/105.0/10
Anatomy & construction2.0/105.0/10
Space & placement3.0/105.5/10
Light & reflections1.5/106.0/10
Purposeful detail3.0/105.5/10
Artistry & character2.5/106.0/10
Materials & effects2.0/105.0/10
Visual integrity3.0/106.5/10

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

Grok 4.7

The warm sunset, blue water and scattered beach activities create a cheerful, readable composition. Animals and equipment use basic silhouettes, with limited anatomical detail and grounding. The sun reflection forms a rigid tapered strip, and foreground objects lack cast shadows. Clean shapes support the illustration, but depth, materials and drawing complexity remain modest.

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

CategoryGrok 4.7Kimi K3.1 Pro
Task & likeness7.5/108.5/10
Anatomy & construction4.5/105.5/10
Space & placement5.5/105.5/10
Light & reflections6.0/106.5/10
Purposeful detail5.0/106.5/10
Artistry & character3.5/105.5/10
Materials & effects4.5/106.5/10
Visual integrity6.0/107.5/10

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

Grok 4.7

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

Grok 4.7

The raccoon rides clearly on the dog's back, and expressive faces, bright colors and a readable orange hull create a playful composition. Steering is unresolved: the dog's visible paws rest on the deck rather than grasping the controls. Simple body shapes and ribbonlike wake limit construction and movement. The glowing sun produces little corresponding illumination or reflection.

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

CategoryGrok 4.7Kimi K3.1 Pro
Task & likeness7.0/107.0/10
Anatomy & construction4.5/105.5/10
Space & placement6.5/106.0/10
Light & reflections4.5/105.5/10
Purposeful detail5.5/107.0/10
Artistry & character5.5/106.0/10
Materials & effects5.5/106.0/10
Visual integrity3.5/107.0/10

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

Grok 4.7

The pelican reads clearly through its long bill, throat pouch and curved neck. Clean pastel shapes and balanced scenery make an appealing illustration. The riding mechanism is less convincing: feet lack clear pedal contact, steering is unresolved, and the frame lacks a coherent drivetrain. Simple shading and sparse feather detail limit depth and finish.

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

CategoryGrok 4.7Kimi K3.1 Pro
Task & likeness7.5/108.5/10
Anatomy & construction4.5/107.5/10
Space & placement6.5/106.5/10
Light & reflections6.0/106.5/10
Purposeful detail6.0/107.5/10
Artistry & character5.5/107.5/10
Materials & effects5.5/106.5/10
Visual integrity6.0/107.5/10

Benchmark task

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