STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Grok 4.7 vs Step 5 Preview

Grok 4.7 leads Step 5 Preview by 8.2 points on StealthMark, 47.2 to 39.0. It leads on 7 of 9 benchmarks, including both games, and Step 5 Preview on 2. Grok 4.7 scores higher on Beach, with its largest category advantage in prompt & likeness.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

47.2/100Overall rank 22/53
39.0/100Overall rank 36/53

General Intelligence

48.4/100
37.1/100

Visual Intelligence

44.8/100
41.9/100

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
  • Step 5 Preview
  • Other models
  • Median

DATASHEET

Specs and pricing

Grok 4.7 scores higher on StealthMark. Step 5 Preview takes 2.1× more context.

  • Grok 4.7
  • Step 5 Preview
  • Other models
  • Median
PricePer 1M output tokens, input below
Grok 4.7: $6$2 inputStep 5 Preview: No list price
Context windowTokens per request, max output below
Grok 4.7: 500KStep 5 Preview: 1M2.1× larger
Output speedTokens per second, our measurement
Grok 4.7: 185tokens/sStep 5 Preview: Not measured
SizeTotal and active parameters
Grok 4.7: Not disclosedStep 5 Preview: 600B27B active
Developer
SpaceXAIStepFun
Released
21 Sep 2026Not published
Origin
United StatesNot published
Input → output
Text, image → textText, image, video → text
Architecture
Not publishedSparse mixture-of-experts; 92 layers (88 MoE), 352 routed experts with 8 selected per token plus a shared expert; grouped-query attention with 512-token sliding windows and full attention every fourth layer; 3 multi-token-prediction layers; vision tower for image and video input

Full datasheets, every price and sourceGrok 4.7 ↗Step 5 Preview ↗

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 3/49

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

Step 5 Preview 59.9/100Rank 42/491 of 3 levels

1 of 3 played
Foresight: complete playing field
Level 122 ptsTurn 28 / 28

Points per level

LevelGrok 4.7Step 5 Preview
Level 1Second Thoughts
25 ptsSurvived
22 ptsSurvived
Level 2Pressure Pot
13 ptsSurvived
Pending
Level 3Hide or Flight
16 ptsSurvived
Pending

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 20/50

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

Step 5 Preview 40.7/100Rank 28/50

Cleared 4 of 5
Latch: complete playing field
Level 515 ptsTurn 35 / 40

Points per level

LevelGrok 4.7Step 5 Preview
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9 ptsCleared
Level 3Relay vault
11.6 ptsFinished early
18.6 ptsCleared
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
15.6 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
20.4 ptsCleared
15 ptsFinished early

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.

Step 5 Preview

The main sphere, airborne black and small colored features occupy broadly appropriate positions. Most of the defining mirror system is absent, and paint interaction remains only partially supported. The small paint features do not visibly establish a separate volume-scale violation.

Score breakdown

CategoryGrok 4.7Step 5 Preview
State at 600 ms23.0/2520.0/25
Camera and placement12.5/1513.5/15
Reflections26.0/12020.0/120
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.

Step 5 Preview

A charming diagonal climber and warm palette communicate the central idea. Simple rounded construction, crowded limb counting, uncertain footholds and an unattached upper shelf limit its physical coherence. Growth bands and the yarn trail add specificity, but the requested material distinctions and unravelled bootie remain underdeveloped.

Score breakdown

CategoryGrok 4.7Step 5 Preview
Task & likeness7.0/106.0/10
Anatomy & construction5.0/104.5/10
Space & placement5.5/105.0/10
Light & reflections4.0/105.5/10
Purposeful detail2.5/105.5/10
Artistry & character3.5/105.0/10
Materials & effects2.5/106.0/10
Visual integrity7.5/105.0/10

Benchmark task

Grok 4.7

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

Step 5 Preview

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

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.

Step 5 Preview

A recognizable, coherent simplification with purposeful facial contours and differentiated fingers. These provide more construction and detail than the broad silhouette alone suggests. The oversized face, frontal seated pose, unresolved wrists and sparse landscape still substantially limit likeness, depth and finish.

Score breakdown

CategoryGrok 4.7Step 5 Preview
Task & likeness2.0/104.0/10
Anatomy & construction2.0/104.0/10
Space & placement3.0/104.0/10
Light & reflections1.5/103.5/10
Purposeful detail3.0/104.0/10
Artistry & character2.5/104.0/10
Materials & effects2.0/103.0/10
Visual integrity3.0/103.5/10

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.

Step 5 Preview

A recognizable sunset beach with clear warm-cool contrast and playful accessories. Basic animal construction, shallow foreground placement and schematic reflections limit spatial and physical credibility. Sparse descriptive detail and abruptly ended sky bands constrain the finish.

Score breakdown

CategoryGrok 4.7Step 5 Preview
Task & likeness7.5/104.0/10
Anatomy & construction4.5/103.0/10
Space & placement5.5/103.5/10
Light & reflections6.0/103.5/10
Purposeful detail5.0/103.0/10
Artistry & character3.5/103.0/10
Materials & effects4.5/103.5/10
Visual integrity6.0/104.0/10

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.

Step 5 Preview

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.

Step 5 Preview

Recognizable animals, a bright palette and identifying accessories support a basic cartoon. Primitive anatomy, partial seated support, unresolved steering and weak hull-water contact limit the central action. Lighting and spray provide atmosphere without establishing convincing physical depth.

Score breakdown

CategoryGrok 4.7Step 5 Preview
Task & likeness7.0/104.0/10
Anatomy & construction4.5/104.5/10
Space & placement6.5/103.0/10
Light & reflections4.5/103.5/10
Purposeful detail5.5/104.0/10
Artistry & character5.5/103.5/10
Materials & effects5.5/103.0/10
Visual integrity3.5/103.0/10

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.

Step 5 Preview

The pelican and bicycle are recognizable, with a pleasant palette and basic diffuse shading. The riding relationship fails physically: the bird is unsupported, the front wheel is unmounted, and pedalling is unresolved. Simple geometric construction and sparse material treatment further limit the drawing.

Score breakdown

CategoryGrok 4.7Step 5 Preview
Task & likeness7.5/103.0/10
Anatomy & construction4.5/103.0/10
Space & placement6.5/103.0/10
Light & reflections6.0/103.0/10
Purposeful detail6.0/104.0/10
Artistry & character5.5/103.0/10
Materials & effects5.5/103.0/10
Visual integrity6.0/102.0/10

Benchmark task

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