STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Gemini 4 Argon vs Kolibri-1

Gemini 4 Argon leads Kolibri-1 by 53.8 points on StealthMark, 67.4 to 13.6. 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.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

67.4/100Overall rank 5/53
13.6/100Overall rank 52/53

General Intelligence

63.6/100
12.3/100

Visual Intelligence

74.4/100
15.0/100

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

  • Kolibri-1Multi-step reasoning not measured

Open or local

Local modelOpen model · Apache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Gemini 4 Argon
  • Kolibri-1
  • Other models
  • Median

DATASHEET

Specs and pricing

Gemini 4 Argon scores higher on StealthMark. Kolibri-1 runs 15% faster in our speed test. Both take about 1M tokens of context.

  • Gemini 4 Argon
  • Kolibri-1
  • Other models
  • Median
PricePer 1M output tokens, input below
Gemini 4 Argon: $10$2 inputKolibri-1: No list price
Context windowTokens per request, max output below
Gemini 4 Argon: 1MTied1M max outputKolibri-1: 1MTied
Output speedTokens per second, our measurement
Gemini 4 Argon: 144tokens/sKolibri-1: 16615% fastertokens/s
SizeTotal and active parameters
Gemini 4 Argon: Not disclosedKolibri-1: 78.1B3.46B active
Developer
GoogleAleph Alpha
Released
13 Oct 20263 Oct 2026
Origin
United StatesGermany
Input → output
Text, image, audio, video, PDF → textText → text
Architecture
Sparse mixture-of-experts (MoE) transformer with native multimodal inputsMixture-of-Experts with 4:1 sliding-window-attention to global-attention pattern

Full datasheets, every price and sourceGemini 4 Argon ↗Kolibri-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.

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 ArgonKolibri-1
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 ArgonKolibri-1
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.

Kolibri-1

A segmented gray perimeter surrounds a black field containing one large, low-positioned gray sphere and two small colored circles. Rounded volume and restrained paint scale earn partial material credit. The image does not demonstrate the required optical structure, while paint history, airborne black and settled support remain largely unresolved.

Score breakdown

CategoryGemini 4 ArgonKolibri-1
State at 600 ms24.5/259.5/25
Camera and placement14.5/151.5/15
Reflections50.5/1200.0/120
Materials and scale8.5/103.0/10
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

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.

Kolibri-1

A restrained ivory, teal and green palette gives the image simple graphic coherence. Execution remains rudimentary: detached oval wings, ambiguous central anatomy and unclear feeding contact prevent a convincing hummingbird scene. The requested feather structure, botanical detail, lighting and enclosing arch are largely unresolved.

Score breakdown

CategoryGemini 4 ArgonKolibri-1
Task & likeness7.0/102.5/10
Anatomy & construction6.5/102.0/10
Space & placement7.5/103.0/10
Light & reflections7.5/102.0/10
Purposeful detail8.0/101.5/10
Artistry & character7.0/101.5/10
Materials & effects7.0/102.0/10
Visual integrity7.5/105.5/10

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.

Kolibri-1

A jewel-coloured hummingbird hovering in flight tests avian anatomy, delicate structure and iridescent surface detail.

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.

Kolibri-1

The candidate offers a clean, highly simplified frontal portrait with warm skin and dark hair. Its oversized oval face, schematic features and unresolved body provide little Mona Lisa likeness. Missing crossed hands, clothing detail and landscape remove essential parts of the original composition; smooth gradients supply only limited volume.

Score breakdown

CategoryGemini 4 ArgonKolibri-1
Task & likeness6.5/100.5/10
Anatomy & construction6.5/100.5/10
Space & placement6.5/100.0/10
Light & reflections7.0/100.0/10
Purposeful detail6.0/100.0/10
Artistry & character6.5/100.5/10
Materials & effects7.0/100.5/10
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

Same 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.

Kolibri-1

A recognizable sunset beach has an appealing purple-orange gradient and clean geometric edges. Birds and animals remain unresolved, terrain obscures the relationship between shore and water, and reflections are absent. Sparse detail, flat materials and limited activity keep the drawing elementary despite its tidy rendering.

Score breakdown

CategoryGemini 4 ArgonKolibri-1
Task & likeness9.0/102.5/10
Anatomy & construction7.5/100.5/10
Space & placement8.5/103.0/10
Light & reflections8.5/101.0/10
Purposeful detail9.0/100.5/10
Artistry & character8.0/101.0/10
Materials & effects8.0/100.5/10
Visual integrity8.0/103.0/10

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.

Kolibri-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

Same 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.

Kolibri-1

Clean shapes and a readable coral platform provide basic graphic clarity, but the animal construction remains fragmented. A recognizable raccoon riding the dog's back, connected steering and convincing water contact are not demonstrated. Sparse detail, flat subjects and absent movement effects support retaining the baseline category assessments.

Score breakdown

CategoryGemini 4 ArgonKolibri-1
Task & likeness8.5/101.5/10
Anatomy & construction8.0/101.0/10
Space & placement7.5/101.0/10
Light & reflections7.5/100.0/10
Purposeful detail8.5/100.5/10
Artistry & character8.5/100.5/10
Materials & effects8.0/100.5/10
Visual integrity8.0/103.5/10

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

Same 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.

Kolibri-1

Clean shapes and aligned wheels establish a readable schematic scene. Pelican likeness, riding support and bicycle mechanics remain substantially unresolved. Sparse detail and flat surfaces limit expression and volume. Strong edge and fill integrity is a separate success and does not repair the construction.

Score breakdown

CategoryGemini 4 ArgonKolibri-1
Task & likeness9.0/101.5/10
Anatomy & construction8.5/101.5/10
Space & placement8.0/101.5/10
Light & reflections8.0/103.0/10
Purposeful detail8.5/101.5/10
Artistry & character8.5/101.0/10
Materials & effects8.5/101.0/10
Visual integrity8.5/103.5/10

Benchmark task

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