STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-6.1 Terra Low vs Qwen3.6-35B-A3B

GPT-6.1 Terra Low leads Qwen3.6-35B-A3B by 20.5 points on StealthMark, 41.3 to 20.8. It leads on 8 of 9 benchmarks, including both games, and Qwen3.6-35B-A3B on 1. GPT-6.1 Terra Low scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

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All results ↗
All results ↗

Overall StealthMark

41.3/100Overall rank 35/55
20.8/100Overall rank 48/55

General Intelligence

34.3/100
12.7/100

Visual Intelligence

53.1/100
34.0/100

Open or local

Local modelOpen model · Apache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT-6.1 Terra Low
  • Qwen3.6-35B-A3B
  • Other models
  • Median

DATASHEET

Specs and pricing

  • GPT-6.1 Terra Low
  • Qwen3.6-35B-A3B
  • Other models
  • Median
PricePer 1M output tokens, input below
GPT-6.1 Terra Low: No list priceQwen3.6-35B-A3B: $1.49$0.25 input
Context windowTokens per request, max output below
GPT-6.1 Terra Low: Not publishedQwen3.6-35B-A3B: 1.01M64K max output
Output speedTokens per second, our measurement
GPT-6.1 Terra Low: Not measuredQwen3.6-35B-A3B: 577tokens/s
SizeTotal and active parameters
GPT-6.1 Terra Low: Not disclosedQwen3.6-35B-A3B: 35B3B active
Developer
Not publishedQwen
Released
Not published16 Apr 2026
Origin
Not publishedChina
Input → output
Not publishedText, image, video → text
Architecture
Not publishedMoE causal language model with vision encoder; Gated DeltaNet + gated attention; 256 experts, 8 routed + 1 shared active

Full datasheets, every price and sourceQwen3.6-35B-A3B ↗

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

Qwen3.6-35B-A3B 20.7/100Rank 43/51

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

Points per level

LevelGPT-6.1 Terra LowQwen3.6-35B-A3B
Level 1Second Thoughts
4 ptsOut of lives
4 ptsOut of lives
Level 2Pressure Pot
8 ptsOut of lives
3 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
9 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

Qwen3.6-35B-A3B 3.6/100Rank 48/52

Cleared 1 of 5
Latch: complete playing field
Level 57.8 ptsTurn 36 / 40

Points per level

LevelGPT-6.1 Terra LowQwen3.6-35B-A3B
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.2 ptsCleared
1 ptsOut of turns
Level 3Relay vault
18.8 ptsCleared
0.2 ptsFinished early
Level 4Passing bay
10.2 ptsFinished early
3 ptsOut of turns
Level 5Second thoughts
20.6 ptsCleared
7.8 ptsFinished early

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.

Qwen3.6-35B-A3B

The artwork demonstrates rounded volume, recognizable paint colors and a compact black feature at an appropriate screen height. The enlarged main-sphere framing, unsupported crimson and cyan interaction histories, oversized compact paint balls and largely missing mirror structure remain substantial weaknesses. The core assessment is 20/170; with no demonstrated floor damage, the combined assessment remains 20/180.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.6-35B-A3B
State at 600 ms22.0/252.5/25
Camera and placement4.0/154.0/15
Reflections10.0/1203.5/120
Materials and scale6.0/102.5/10
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

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.

Qwen3.6-35B-A3B

An appealing fantasy illustration with coordinated ornament, readable suspension and luminous turquoise accents. Plausible limb attachments and soft shading support competent execution. Bear-like proportions, unclear paw gestures, insufficient white robe fabric, crowded chest details and shallow material modeling limit its finish.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.6-35B-A3B
Task & likeness4.0/106.0/10
Anatomy & construction3.5/106.0/10
Space & placement4.5/106.5/10
Light & reflections5.5/107.0/10
Purposeful detail5.5/106.5/10
Artistry & character5.0/106.0/10
Materials & effects5.5/105.5/10
Visual integrity4.0/107.5/10

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.

Qwen3.6-35B-A3B

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.

Qwen3.6-35B-A3B

A recognizable but basic geometric interpretation. Muted colors and soft shading provide cohesion, while weak likeness, unresolved hands, rigid anatomy and shallow landscape construction substantially limit the replication.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.6-35B-A3B
Task & likeness5.0/102.0/10
Anatomy & construction4.5/101.0/10
Space & placement5.0/102.0/10
Light & reflections6.0/100.5/10
Purposeful detail5.0/101.5/10
Artistry & character5.5/101.5/10
Materials & effects5.0/101.5/10
Visual integrity6.0/102.0/10

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.

Qwen3.6-35B-A3B

A recognizable beach sunset with balanced framing and appealing color transitions. Birds, boats and small animals fulfill the main scene requirements. Elementary anatomy, faint details, weak grounding and rigid reflection columns limit depth and finish.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.6-35B-A3B
Task & likeness8.0/107.5/10
Anatomy & construction5.5/104.5/10
Space & placement5.5/105.5/10
Light & reflections6.5/104.5/10
Purposeful detail6.0/104.5/10
Artistry & character5.0/104.5/10
Materials & effects5.5/105.5/10
Visual integrity7.5/105.0/10

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

GPT-6.1 Terra Low

This benchmark has not been assessed yet.

Qwen3.6-35B-A3B

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.

Qwen3.6-35B-A3B

Clean shapes, cheerful faces and bright colors make the riding arrangement readable. The dog does not visibly operate the control, while awkward limbs, shallow hull placement and stiff poses limit credibility. Gradients and layered foam add modest volume and motion. The obscured tail attachment does not establish detachment.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.6-35B-A3B
Task & likeness6.5/104.5/10
Anatomy & construction5.0/103.5/10
Space & placement5.5/105.5/10
Light & reflections4.5/103.5/10
Purposeful detail6.0/104.5/10
Artistry & character5.0/104.0/10
Materials & effects5.0/104.0/10
Visual integrity6.0/103.5/10

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

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.

Qwen3.6-35B-A3B

A cheerful, readable illustration with a distinctive pelican silhouette, clean contours and an orderly landscape. Soft glow and restrained shading provide modest atmosphere. Construction is weaker: the handlebar is disconnected, wings do not reach the controls, and overlapping legs leave pedaling ambiguous. Simple forms and mostly flat materials limit depth and drawing sophistication.

Score breakdown

CategoryGPT-6.1 Terra LowQwen3.6-35B-A3B
Task & likeness7.0/107.0/10
Anatomy & construction5.5/103.5/10
Space & placement6.0/106.0/10
Light & reflections5.5/105.5/10
Purposeful detail6.5/107.0/10
Artistry & character6.0/105.0/10
Materials & effects6.0/105.5/10
Visual integrity6.0/104.5/10

Benchmark task

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