STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Glyph Cluster vs GPT-6.1 Terra Low

GPT-6.1 Terra Low leads Glyph Cluster by 22.4 points on StealthMark, 41.3 to 18.9. It leads on all 9 benchmarks. GPT-6.1 Terra Low scores higher on Newton's Mirror, with its largest category advantage in state at 600 ms.

See the difference ↘
Model guide ↗
All results ↗

Overall StealthMark

18.9/100Overall rank 50/55
41.3/100Overall rank 35/55

General Intelligence

12.0/100
34.3/100

Visual Intelligence

29.8/100
53.1/100

Open or local

BENCHMARK BY BENCHMARK

Where each model leads

  • Glyph Cluster
  • GPT-6.1 Terra Low
  • Other models
  • Median

DATASHEET

Specs and pricing

  • Glyph Cluster
  • GPT-6.1 Terra Low
  • Other models
  • Median
Output speedTokens per second, our measurement
Glyph Cluster: 69tokens/sGPT-6.1 Terra Low: Not measured

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.

Glyph Cluster 6.4/100Rank 48/51

Survived 0 of 3
Foresight: complete playing field
Level 33 ptsTurn 5 / 20

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

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

Points per level

LevelGlyph ClusterGPT-6.1 Terra Low
Level 1Second Thoughts
3 ptsOut of lives
4 ptsOut of lives
Level 2Pressure Pot
3 ptsOut of lives
8 ptsOut of lives
Level 3Hide or Flight
3 ptsOut of lives
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.

Glyph Cluster 3.6/100Rank 48/52

Cleared 1 of 5
Latch: complete playing field
Level 59 ptsTurn 25 / 40

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

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

Points per level

LevelGlyph ClusterGPT-6.1 Terra Low
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
2 ptsOut of turns
9.2 ptsCleared
Level 3Relay vault
4.2 ptsFinished early
18.8 ptsCleared
Level 4Passing bay
1 ptsOut of turns
10.2 ptsFinished early
Level 5Second thoughts
9 ptsFinished early
20.6 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

Glyph Cluster

Rounded sphere volume, compact colored forms and crimson-below-cyan ordering provide limited agreement. The visible paint does not establish the required interaction history, the sphere and black blob are displaced from the prescribed projection, and most of the defining mirror-room structure is missing or unresolved. The faint reflection echoes earn limited optical credit.

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.

Score breakdown

CategoryGlyph ClusterGPT-6.1 Terra Low
State at 600 ms5.0/2522.0/25
Camera and placement3.0/154.0/15
Reflections8.0/12010.0/120
Materials and scale3.0/106.0/10
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

Glyph Cluster

A charming palette and three expressive companions make the concept recognizable. The dominant paper enclosure overwhelms the small group, the plum character lacks a clear brace silhouette, and the cuddle remains difficult to trace. Sparse furnishings, ambiguous folds and generalized shading limit the promised lived-in richness and tactile depth.

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.

Score breakdown

CategoryGlyph ClusterGPT-6.1 Terra Low
Task & likeness3.5/104.0/10
Anatomy & construction2.5/103.5/10
Space & placement4.0/104.5/10
Light & reflections3.5/105.5/10
Purposeful detail4.5/105.5/10
Artistry & character3.0/105.0/10
Materials & effects2.0/105.5/10
Visual integrity3.0/104.0/10

Benchmark task

Glyph Cluster

Punctuation-shaped companions gather inside a curled paper home. The scene tests expressive silhouettes, close interaction and the coherence of a detailed miniature environment.

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.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Glyph Cluster

The portrait has a continuous body silhouette, attached sleeves and hands, and simple landscape depth. Its oversized pale head enclosure nearly erases the expression, while separated fists, ochre clothing and frontal construction weaken Mona Lisa likeness. Sparse detail, flat materials and ambiguous facial layers leave the drawing seriously unresolved.

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.

Score breakdown

CategoryGlyph ClusterGPT-6.1 Terra Low
Task & likeness2.0/105.0/10
Anatomy & construction0.5/104.5/10
Space & placement2.0/105.0/10
Light & reflections1.0/106.0/10
Purposeful detail1.0/105.0/10
Artistry & character0.5/105.5/10
Materials & effects1.0/105.0/10
Visual integrity3.0/106.0/10

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

Glyph Cluster

A cheerful, recognizable beach illustration with playful accessories and mostly clean silhouettes. Sunset colors and soft glow supply atmosphere, but abbreviated anatomy, unexplained airborne animals, weak ground contact and absent water reflections limit physical coherence. Small details add interest without consistently resolving construction or materials.

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.

Score breakdown

CategoryGlyph ClusterGPT-6.1 Terra Low
Task & likeness6.0/108.0/10
Anatomy & construction4.0/105.5/10
Space & placement5.0/105.5/10
Light & reflections4.0/106.5/10
Purposeful detail5.5/106.0/10
Artistry & character4.0/105.0/10
Materials & effects4.0/105.5/10
Visual integrity5.0/107.5/10

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

Glyph Cluster

This benchmark has not been assessed yet.

GPT-6.1 Terra Low

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

Glyph Cluster

Recognizable animals and clean shapes give the scene charm, but the requested steering action is visibly incomplete. Simplified joints, weak vehicle construction and uncertain water contact limit physical coherence. Flat lighting, sparse functional detail and a small focal group keep the illustration basic despite its tidy edges.

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.

Score breakdown

CategoryGlyph ClusterGPT-6.1 Terra Low
Task & likeness5.0/106.5/10
Anatomy & construction3.0/105.0/10
Space & placement4.0/105.5/10
Light & reflections2.5/104.5/10
Purposeful detail3.5/106.0/10
Artistry & character3.0/105.0/10
Materials & effects3.0/105.0/10
Visual integrity5.5/106.0/10

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

Glyph Cluster

A readable cartoon with open framing, aligned bicycle wheels and modest atmospheric effects. Pelican likeness is approximate, while the narrow neck, crowded feet, absent steering contact and unclear drivetrain weaken the riding action. Clean shapes help presentation, but shallow space and inconsistent shading limit the finish.

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.

Score breakdown

CategoryGlyph ClusterGPT-6.1 Terra Low
Task & likeness6.0/107.0/10
Anatomy & construction3.0/105.5/10
Space & placement6.0/106.0/10
Light & reflections3.5/105.5/10
Purposeful detail4.0/106.5/10
Artistry & character3.0/106.0/10
Materials & effects4.5/106.0/10
Visual integrity6.0/106.0/10

Benchmark task

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