STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Gemma 4 26B A4B vs Kimi K3.1 Pro

Kimi K3.1 Pro leads Gemma 4 26B A4B by 40.2 points on StealthMark, 56.7 to 16.5. 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

16.5/100Overall rank 50/53
56.7/100Overall rank 11/53

General Intelligence

9.4/100
53.9/100

Visual Intelligence

28.9/100
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

  • Gemma 4 26B A4B

Open or local

Local modelOpen model · Apache 2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Gemma 4 26B A4B
  • Kimi K3.1 Pro
  • Other models
  • Median

DATASHEET

Specs and pricing

Gemma 4 26B A4B is 33× cheaper per output token. Kimi K3.1 Pro scores higher on StealthMark, takes 4× more context and runs 23% faster in our speed test.

  • Gemma 4 26B A4B
  • Kimi K3.1 Pro
  • Other models
  • Median
PricePer 1M output tokens, input below
Gemma 4 26B A4B: $0.3033× cheaper$0.09 inputKimi K3.1 Pro: $10$2 input
Context windowTokens per request, max output below
Gemma 4 26B A4B: 256KKimi K3.1 Pro: 1M4× larger1M max output
Output speedTokens per second, our measurement
Gemma 4 26B A4B: 95tokens/sKimi K3.1 Pro: 11723% fastertokens/s
SizeTotal and active parameters
Gemma 4 26B A4B: 25.2B3.8B activeKimi K3.1 Pro: 2.8T104B activeEstimated
Developer
Google DeepMindMoonshot AI
Released
2 Apr 202623 Oct 2026
Origin
United StatesChina
Input → output
Text, image → textText, image, video → text
Architecture
Mixture-of-Experts multimodal transformer with interleaved sliding-window and global attentionPost-trained version of Kimi K3, a Mixture-of-Experts model

Full datasheets, every price and sourceGemma 4 26B A4B ↗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.

Gemma 4 26B A4B 4.1/100Rank 46/47

Survived 0 of 3
Foresight: complete playing field
Level 32 ptsTurn 9 / 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

LevelGemma 4 26B A4BKimi K3.1 Pro
Level 1Second Thoughts
3 ptsOut of lives
15 ptsOut of lives
Level 2Pressure Pot
2 ptsOut of lives
12 ptsOut of lives
Level 3Hide or Flight
2 ptsOut of lives
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.

Gemma 4 26B A4B 4.5/100Rank 41/48

Cleared 2 of 5
Latch: complete playing field
Level 53 ptsTurn 40 / 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

LevelGemma 4 26B A4BKimi K3.1 Pro
Level 1Hold the door
3 ptsCleared1 beacon left
5.2 ptsCleared
Level 2Crossfeed
6.2 ptsFinished early
9.8 ptsCleared
Level 3Relay vault
15.2 ptsClearedFinished early · 3 beacons left
19.2 ptsCleared
Level 4Passing bay
11.8 ptsFinished early
18.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
3 ptsOut of turns
19.8 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

Gemma 4 26B A4B

Separate airborne black and contact-compatible paint flattening earn partial state credit. Settlement, adhesion and differentiated paint transport remain unresolved. The enlarged, low sphere and thin lamp strip substantially depart from the required camera, while the defining mirror structure is missing. Weak material appearance and oversized black paint limit material credit. The retained base total is 18/170; the floor-damage reward is 0, giving 18/180.

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

CategoryGemma 4 26B A4BKimi K3.1 Pro
State at 600 ms10.0/2523.5/25
Camera and placement2.0/1510.5/15
Reflections0.0/12026.0/120
Materials and scale2.5/107.0/10
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

Gemma 4 26B A4B

An appealing, readable sparkle-creature with luminous colour and expressive eyes. Simple geometric construction limits sophistication, while sharp body points, ambiguous hand contact and a minimally resolved jar weaken the requested soft, plump character and treasure-presenting pose.

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

CategoryGemma 4 26B A4BKimi K3.1 Pro
Task & likeness5.5/108.0/10
Anatomy & construction4.5/105.5/10
Space & placement6.0/106.5/10
Light & reflections6.0/106.5/10
Purposeful detail5.5/107.5/10
Artistry & character4.0/107.0/10
Materials & effects6.0/107.0/10
Visual integrity7.0/107.0/10

Benchmark task

Gemma 4 26B A4B

A small luminous creature proudly holding an empty glass jar tests expression, transparent materials and the balance of character and prop.

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

Gemma 4 26B A4B

The centered dark-haired portrait provides a loose reference cue, but its elongated, nearly featureless face and undifferentiated torso fall far short of replication. Crossed hands, the subtle smile, clothing structure and landscape are unresolved. Clean silhouettes and soft gradients provide limited coherence.

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

CategoryGemma 4 26B A4BKimi K3.1 Pro
Task & likeness0.5/105.0/10
Anatomy & construction2.0/105.0/10
Space & placement1.0/105.5/10
Light & reflections2.0/106.0/10
Purposeful detail1.0/105.5/10
Artistry & character2.0/106.0/10
Materials & effects1.0/105.0/10
Visual integrity4.5/106.5/10

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

Gemma 4 26B A4B

A clean, balanced sunset scene demonstrates the beach, birds and a centered reflection. Animals and play receive only minimal treatment. Coherent layers and controlled gradients support readability, but unresolved aquatic anatomy, sparse details and weak surface modeling keep the drawing basic.

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

CategoryGemma 4 26B A4BKimi K3.1 Pro
Task & likeness3.5/108.5/10
Anatomy & construction2.0/105.5/10
Space & placement3.5/105.5/10
Light & reflections5.0/106.5/10
Purposeful detail1.0/106.5/10
Artistry & character1.5/105.5/10
Materials & effects2.0/106.5/10
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

Gemma 4 26B A4B

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

Gemma 4 26B A4B

The animal stack is recognizable, and clean silhouettes support a basic illustration. Steering is not depicted, while the craft's construction and water contact remain unresolved. Sparse anatomical and material detail limit the finish. The sky gradient and glow provide atmospheric lighting, but the subjects lack corresponding modeling.

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

CategoryGemma 4 26B A4BKimi K3.1 Pro
Task & likeness2.5/107.0/10
Anatomy & construction2.5/105.5/10
Space & placement4.0/106.0/10
Light & reflections3.5/105.5/10
Purposeful detail2.5/107.0/10
Artistry & character3.0/106.0/10
Materials & effects2.0/106.0/10
Visual integrity7.0/107.0/10

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

Gemma 4 26B A4B

A clean, balanced icon suggests a pelican riding a bicycle. Continuous contours and restrained colors support its finish, but the abbreviated bill, undifferentiated body, unresolved riding contacts and incomplete bicycle mechanism limit likeness and construction. Sparse detail and flat lighting keep the drawing basic despite its clarity.

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

CategoryGemma 4 26B A4BKimi K3.1 Pro
Task & likeness3.0/108.5/10
Anatomy & construction3.0/107.5/10
Space & placement5.0/106.5/10
Light & reflections3.0/106.5/10
Purposeful detail3.0/107.5/10
Artistry & character2.5/107.5/10
Materials & effects2.5/106.5/10
Visual integrity5.0/107.5/10

Benchmark task

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