STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-6.1 Terra Low vs Qwen3.8-Max-0902

Qwen3.8-Max-0902 leads GPT-6.1 Terra Low by 22.0 points on StealthMark, 63.3 to 41.3. It leads on 8 of 9 benchmarks, including both games, and GPT-6.1 Terra Low on 1. Qwen3.8-Max-0902 scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

41.3/100Overall rank 35/55
63.3/100Overall rank 6/55

General Intelligence

34.3/100
62.7/100

Visual Intelligence

53.1/100
64.5/100

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT-6.1 Terra Low
  • Qwen3.8-Max-0902
  • Other models
  • Median

DATASHEET

Specs and pricing

  • GPT-6.1 Terra Low
  • Qwen3.8-Max-0902
  • Other models
  • Median
PricePer 1M output tokens, input below
GPT-6.1 Terra Low: No list priceQwen3.8-Max-0902: $4.95$1.65 input
Context windowTokens per request, max output below
GPT-6.1 Terra Low: Not publishedQwen3.8-Max-0902: 1M128K max output
Output speedTokens per second, our measurement
GPT-6.1 Terra Low: Not measuredQwen3.8-Max-0902: 76tokens/s
SizeTotal and active parameters
GPT-6.1 Terra Low: Not disclosedQwen3.8-Max-0902: 2.4T95B activeEstimated
Developer
Not publishedQwen / Alibaba Cloud
Released
Not published2 Sep 2026
Origin
Not publishedChina
Input → output
Not publishedText, image → text
Architecture
Not publishedMixture-of-Experts; hosted version based on the open Qwen3.8-2.4T-A95B

Full datasheets, every price and sourceQwen3.8-Max-0902 ↗

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.

GPT-6.1 Terra Low 36.1/100Rank 26/51

Survived 1 of 3
Foresight: complete playing field
Level 39 ptsTurn 20 / 20

Qwen3.8-Max-0902 72.4/100Rank 4/51

Survived 2 of 3
Foresight: complete playing field
Level 316 ptsTurn 20 / 20

Points per level

LevelGPT-6.1 Terra LowQwen3.8-Max-0902
Level 1Second Thoughts
4 ptsOut of lives
27 ptsSurvived
Level 2Pressure Pot
8 ptsOut of lives
12 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
16 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.

GPT-6.1 Terra Low 62.4/100Rank 23/52

Cleared 4 of 5
Latch: complete playing field
Level 520.6 ptsTurn 27 / 40

Qwen3.8-Max-0902 82.6/100Rank 6/52

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

Points per level

LevelGPT-6.1 Terra LowQwen3.8-Max-0902
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.2 ptsCleared
9.8 ptsCleared
Level 3Relay vault
18.8 ptsCleared
19.2 ptsCleared
Level 4Passing bay
10.2 ptsFinished early
18.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
20.6 ptsCleared
20.6 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

GPT-6.1 Terra Low

Deformed colored paint and a separate airborne black body establish readable interaction history. Cyan has travelled too far, framing differs substantially, and the mirror system supplies only elementary bands and oval copies. Missing recursive geometry, nested spherical imagery and emitter mapping remain the dominant weaknesses.

Qwen3.8-Max-0902

The central sphere and differentiated cyan/crimson interaction are supported. The tiny highlighted object above the sphere provides partial airborne-black evidence. The few isolated sphere and panel images preserve limited optical relationships, but most of the repeating mirror-room structure is missing. Core score: 64.5/170; including the floor-damage reward: 64.5/180.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.8-Max-0902
State at 600 ms22.0/2523.0/25
Camera and placement4.0/1512.0/15
Reflections10.0/12029.0/120
Materials and scale6.0/108.0/10
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

GPT-6.1 Terra Low

Six attached outward-facing heads, delicate scales and soft ivory shading establish an orderly decorative motif. Separate paddle-shaped bodies replace the required interlocking loops and leave no enclosed central hexagon. Surface detail provides interest, but repeated simple forms, schematic faces and limited anatomical modeling constrain the result.

Qwen3.8-Max-0902

A coherent ornamental illustration with balanced framing, appealing color and legible magical accessories. The disconnected raised wrist, incorrect raised-arm side and palm orientation, bear-like facial proportions and shallow material modeling limit execution. Clean decoration and compact spatial balance remain strengths.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.8-Max-0902
Task & likeness4.0/107.5/10
Anatomy & construction3.5/106.5/10
Space & placement4.5/108.0/10
Light & reflections5.5/107.0/10
Purposeful detail5.5/107.5/10
Artistry & character5.0/107.0/10
Materials & effects5.5/107.5/10
Visual integrity4.0/106.5/10

Benchmark task

GPT-6.1 Terra Low

A pale serpent woven into an interlocking knot tests connected anatomy, repeated structure and readable overlaps. Organic surface detail must work with the overall geometry.

Qwen3.8-Max-0902

A floating capybara in ornate robes tests character anatomy, layered fabric and the placement of surrounding luminous forms.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

GPT-6.1 Terra Low

A recognizable, coherent portrait with purposeful facial detail, warm local volume and layered scenery. The frontal pose, enlarged face, merged hands and shallow clothing construction substantially limit replication and drawing skill. The visible successes support retaining the current assessment.

Qwen3.8-Max-0902

A recognizable, cohesive Mona Lisa interpretation with readable landscape layers and a restrained expression. Continuous body construction and clean contours support readability, but broad hands, simplified drapery, frontal symmetry and limited facial volume keep the execution basic and uneven.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.8-Max-0902
Task & likeness5.0/104.5/10
Anatomy & construction4.5/103.5/10
Space & placement5.0/105.0/10
Light & reflections6.0/105.0/10
Purposeful detail5.0/105.0/10
Artistry & character5.5/105.0/10
Materials & effects5.0/103.5/10
Visual integrity6.0/105.0/10

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

GPT-6.1 Terra Low

A coherent sunset scene demonstrates the beach, animals, birds and reflections. Flowing silhouettes, warm color transitions and intact attachments are its strongest properties. Simplified anatomy, the turtle's elevated viewing angle and symbolic surface effects constrain drawing complexity and physical depth.

Qwen3.8-Max-0902

A strong stylized beach illustration with coherent sunset color, lively dolphin arcs and balanced activity. Clean contours, readable ground contact and an aligned reflection support the finish. Schematic anatomy, sparse small-subject features, flat materials and repetitive water highlights limit physical depth and refinement.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.8-Max-0902
Task & likeness8.0/108.5/10
Anatomy & construction5.5/107.5/10
Space & placement5.5/107.5/10
Light & reflections6.5/108.0/10
Purposeful detail6.0/107.0/10
Artistry & character5.0/108.0/10
Materials & effects5.5/106.5/10
Visual integrity7.5/108.5/10

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

GPT-6.1 Terra Low

This benchmark has not been assessed yet.

Qwen3.8-Max-0902

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

GPT-6.1 Terra Low

Recognizable animals, a coherent craft and sweeping wake make an appealing cartoon. Basic limb construction, weakly demonstrated raccoon seating and limited shared perspective constrain the scene. Small identifying details work well, while lighting and materials remain broadly graphic.

Qwen3.8-Max-0902

The riding arrangement and steering action are readable, supported by coherent visible attachments and useful character details. Clean shapes, strong color separation and clustered foam make the scene appealing and active. Stiff anatomy, crowded controls, limited directional lighting and simple surface treatments constrain sophistication.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.8-Max-0902
Task & likeness6.5/108.0/10
Anatomy & construction5.0/107.0/10
Space & placement5.5/107.0/10
Light & reflections4.5/106.5/10
Purposeful detail6.0/107.0/10
Artistry & character5.0/106.5/10
Materials & effects5.0/106.0/10
Visual integrity6.0/107.5/10

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

GPT-6.1 Terra Low

A coherent coastal illustration with a distinctive pelican, controlled contours and clearly organised bicycle wheels. Visible saddle support and shaped neck and wing contours earn credit beyond basic geometric construction. Rubbery legs, unresolved pedal contacts and absent steering contact limit the riding action. Lighting and materials remain restrained and spatially shallow.

Qwen3.8-Max-0902

An appealing graphic illustration with a recognizable pelican, readable bicycle and clean coastal composition. Steering contact and one connected pedal support the action. Ambiguous neck-to-torso construction, an unclear opposing pedal connection, shallow space and limited material and lighting effects constrain its execution.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.8-Max-0902
Task & likeness7.0/108.5/10
Anatomy & construction5.5/106.5/10
Space & placement6.0/107.0/10
Light & reflections5.5/106.0/10
Purposeful detail6.5/107.5/10
Artistry & character6.0/107.5/10
Materials & effects6.0/106.0/10
Visual integrity6.0/108.0/10

Benchmark task

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