STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Gemini 4 Argon vs LongCat-2.0

Gemini 4 Argon leads LongCat-2.0 by 41.9 points on StealthMark, 67.4 to 25.5. It leads on all 7 benchmarks with results for both. Gemini 4 Argon scores higher on Newton's Mirror, with its largest category advantage in reflections.

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All results ↗
Model guide ↗

Overall StealthMark

67.4/100Overall rank 5/53
25.5/100Overall rank 45/53

General Intelligence

63.6/100
17.2/100

Visual Intelligence

74.4/100
34.4/100

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

  • LongCat-2.0Multi-step reasoning not measured

Open or local

Open modelMIT

BENCHMARK BY BENCHMARK

Where each model leads

  • Gemini 4 Argon
  • LongCat-2.0
  • Other models
  • Median

DATASHEET

Specs and pricing

Gemini 4 Argon scores higher on StealthMark and runs 1.7× faster in our speed test. LongCat-2.0 is 8.3× cheaper per output token. Both take about 1M tokens of context.

  • Gemini 4 Argon
  • LongCat-2.0
  • Other models
  • Median
PricePer 1M output tokens, input below
Gemini 4 Argon: $10$2 inputLongCat-2.0: $1.208.3× cheaper$0.30 input
Context windowTokens per request, max output below
Gemini 4 Argon: 1MTied1M max outputLongCat-2.0: 1MTied
Output speedTokens per second, our measurement
Gemini 4 Argon: 1441.7× fastertokens/sLongCat-2.0: 86tokens/s
Developer
GoogleMeituan
Released
13 Oct 2026Not published
Origin
United StatesChina
Input → output
Text, image, audio, video, PDF → textText → text
Architecture
Sparse mixture-of-experts (MoE) transformer with native multimodal inputsMixture-of-Experts with LongCat Sparse Attention

Full datasheets, every price and sourceGemini 4 Argon ↗LongCat-2.0 ↗

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.

Gemini 4 Argon 48.6/100Rank 19/47

Survived 1 of 3
Foresight: complete playing field
Level 36 ptsTurn 7 / 20

Points per level

LevelGemini 4 ArgonLongCat-2.0
Level 1Second Thoughts
26 ptsSurvived
No run
Level 2Pressure Pot
9 ptsOut of lives
No run
Level 3Hide or Flight
6 ptsOut of lives
No run

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.

Gemini 4 Argon 82.6/100Rank 6/48

Cleared 5 of 5
Latch: complete playing field
Level 520.6 ptsTurn 27 / 40

Points per level

LevelGemini 4 ArgonLongCat-2.0
Level 1Hold the door
5.2 ptsCleared
No run
Level 2Crossfeed
9.8 ptsCleared
No run
Level 3Relay vault
19.2 ptsCleared
No run
Level 4Passing bay
18.2 ptsClearedFinished early · 3 beacons left
No run
Level 5Second thoughts
20.6 ptsCleared
No run

Newton's Mirror

Same task instructions

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

The judgment

Gemini 4 Argon

The central sphere, separate airborne black blob, flattened cyan contact and displaced crimson aftermath support the principal camera and physical-state requirements. Open lateral lanes and initial reflection placements provide partial optical structure, but missing outer chains, sparse nested imagery and incomplete emitter mappings remain substantial limitations. The raised crimson mass also weakens paint-scale fidelity.

LongCat-2.0

Cyan lies on the sphere's facing middle rather than showing its recent interaction near the apex. Separate airborne black and elongated crimson support part of the timing sequence. Small side images and an overlapping lower image provide limited reflection ordering, but recursive room structure, nested imagery and emitter mappings are largely absent. The main sphere is smaller and higher in the frame than prescribed, and the surfaces have a soft, matte appearance.

Score breakdown

CategoryGemini 4 ArgonLongCat-2.0
State at 600 ms24.5/259.5/25
Camera and placement14.5/156.5/15
Reflections50.5/12012.5/120
Materials and scale8.5/105.5/10
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.

The judgment

Gemini 4 Argon

An appealing, controlled illustration with a distinctive buoyant silhouette, expressive comic face and rich luminous colour. The full composition and grounded slipper read clearly. The principal limitation is the crowded raised-foot interaction: paws, toes and lining overlap without making the bent leg or tight fit unmistakable.

LongCat-2.0

Amber slit eyes, a pointed beak, cream feathers and gold-trimmed black clothing establish the secretive owl rogue. The head appears frontal rather than lowered, with much of the face exposed. The centered silhouette is effective, but stiff cloak geometry, shallow facial modeling and extremely dark clothing limit depth and finish. Sparse gold markings suggest the requested circuitry only loosely.

Score breakdown

CategoryGemini 4 ArgonLongCat-2.0
Task & likeness7.0/107.0/10
Anatomy & construction6.5/106.0/10
Space & placement7.5/106.0/10
Light & reflections7.5/105.5/10
Purposeful detail8.0/106.0/10
Artistry & character7.0/106.5/10
Materials & effects7.0/105.5/10
Visual integrity7.5/106.5/10

Benchmark task

Gemini 4 Argon

A luminous little dragon struggles with its bedtime slippers while a buoyant tail pulls it upward. The scene tests expressive anatomy, physical contact and the contrast between translucent forms and heavy objects.

LongCat-2.0

A cloaked owl with luminous eyes tests expression, fabric folds and the separation of dark forms.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Gemini 4 Argon

A coherent, moderately complex Mona Lisa reconstruction with substantial portrait volume, articulated clothing and landscape recession. Specific source features support replication beyond recognition alone. Altered facial likeness, uncertain crossed-hand anatomy and pervasive colored crackle keep the result uneven despite its developed shading and detail.

LongCat-2.0

The centered portrait, slight smile, overlapping hands and distant landscape suggest Mona Lisa, but replication is weak. The face has little volume, the shoulders and torso form a narrow wedge, and the hands are fingerless ovals with unresolved wrists. Broad gray background bands provide limited depth. A bright head rim and pale hands contrast with an almost featureless dark figure.

Score breakdown

CategoryGemini 4 ArgonLongCat-2.0
Task & likeness6.5/100.5/10
Anatomy & construction6.5/100.5/10
Space & placement6.5/100.5/10
Light & reflections7.0/100.5/10
Purposeful detail6.0/100.0/10
Artistry & character6.5/100.5/10
Materials & effects7.0/100.0/10
Visual integrity7.0/100.5/10

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.

The judgment

Gemini 4 Argon

A strong decorative beach illustration with controlled color, intricate silhouettes and abundant playful detail. Connected dolphin forms and recognizable equipment support its construction, while the aligned sunset reflection anchors the scene. Compressed wave depth, ambiguous foreground support and uneven reflection specificity limit physical coherence. The saved comparisons support retaining the category assessments.

LongCat-2.0

The sunset, palms, birds and beach animals create a cheerful, readable scene. Clean silhouettes and a vivid sky establish the composition, but construction remains schematic. The right palm appears rooted in open water, shadows have limited connection to the sunset, and the sun’s reflection consists of rigid bands. Small creatures and beach equipment are recognizable but minimally developed.

Score breakdown

CategoryGemini 4 ArgonLongCat-2.0
Task & likeness9.0/107.5/10
Anatomy & construction7.5/105.5/10
Space & placement8.5/105.5/10
Light & reflections8.5/106.0/10
Purposeful detail9.0/105.0/10
Artistry & character8.0/105.0/10
Materials & effects8.0/103.0/10
Visual integrity8.0/104.0/10

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

Gemini 4 Argon

This benchmark has not been assessed yet.

LongCat-2.0

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

Gemini 4 Argon

An accomplished illustration with expressive characters, intricate spray and strong depth. Direct back seating, steering connections and hull-water contact are only partly demonstrated. Clean graphic execution and purposeful detail remain strengths, while shadows and reflections provide limited physical grounding.

LongCat-2.0

The raccoon is recognizable and expressive, with a clear mask and striped tail. The dog's anatomy is poorly resolved, and the flattened craft lacks convincing steering and seating. Feet extend below the hull, weakening the sense of support. An appealing palette, clean shapes and decorative water effects give the illustration some polish.

Score breakdown

CategoryGemini 4 ArgonLongCat-2.0
Task & likeness8.5/104.0/10
Anatomy & construction8.0/103.0/10
Space & placement7.5/104.5/10
Light & reflections7.5/105.5/10
Purposeful detail8.5/106.0/10
Artistry & character8.5/103.0/10
Materials & effects8.0/105.5/10
Visual integrity8.0/105.0/10

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

Different task instructions

Subject construction and spatial relationships.

The judgment

Gemini 4 Argon

An expressive, detailed illustration with controlled gradients and coherent environmental depth. Continuous body contours and connected bicycle components establish competent construction. Steering grip and pedal engagement remain less explicit than the decorative details and wheel placement. These contact uncertainties limit action and placement credit without establishing broken anatomy.

LongCat-2.0

A clearly recognizable pelican cycles through a well-composed coastal sunset. Warm colors, flowing scarf, feather contours and bicycle details give the illustration character. The legs connect to the body, but the farther foot's pedal contact and the wing's handlebar grip remain ambiguous. Clean vector shapes provide polish, with limited material texture and directional shading.

Score breakdown

CategoryGemini 4 ArgonLongCat-2.0
Task & likeness9.0/108.5/10
Anatomy & construction8.5/107.0/10
Space & placement8.0/108.0/10
Light & reflections8.0/107.5/10
Purposeful detail8.5/108.0/10
Artistry & character8.5/108.5/10
Materials & effects8.5/107.0/10
Visual integrity8.5/108.5/10

Benchmark task

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