STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GLM-5.3 vs Inkling-Small

GLM-5.3 leads Inkling-Small by 17.5 points on StealthMark, 45.1 to 27.6. It leads on 8 of 9 benchmarks, including Foresight, and Inkling-Small on 1, including Latch. GLM-5.3 scores higher on Beach, with its largest category advantage in anatomy & construction.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

45.1/100Overall rank 27/53
27.6/100Overall rank 43/53

General Intelligence

37.6/100
25.5/100

Visual Intelligence

57.2/100
31.1/100

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

  • GLM-5.3
  • Inkling-Small

Open or local

Open modelGLM-5.3 License
Open modelApache 2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • GLM-5.3
  • Inkling-Small
  • Other models
  • Median

DATASHEET

Specs and pricing

Both take about 1M tokens of context.

  • GLM-5.3
  • Inkling-Small
  • Other models
  • Median
PricePer 1M output tokens, input below
GLM-5.3: $4.40$1.40 inputInkling-Small: No list price
Context windowTokens per request, max output below
GLM-5.3: 1MTied128K max outputInkling-Small: 1MTied
Output speedTokens per second, our measurement
GLM-5.3: 86tokens/sInkling-Small: Not measured
SizeTotal and active parameters
GLM-5.3: 753BAll activeInkling-Small: 276B12B active
Developer
Z.AIThinking Machines Lab
Released
17 Aug 2026Not published
Origin
ChinaNot published
Input → output
Text → textText, image, audio → text
Architecture
GLM MoE with DSA sparse attention42-layer decoder-only transformer with sparse mixture-of-experts feed-forward (6 of 256 routed experts plus 2 shared per token); hybrid local and global attention; natively multimodal with a hierarchical patch image encoder and discrete-token audio

Full datasheets, every price and sourceGLM-5.3 ↗Inkling-Small ↗

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.

GLM-5.3 59.1/100Rank 23/492 of 3 levels

2 of 3 played
Foresight: complete playing field
Level 26 ptsTurn 10 / 18

Inkling-Small 30.2/100Rank 29/49

Survived 0 of 3
Foresight: complete playing field
Level 38 ptsTurn 17 / 20

Points per level

LevelGLM-5.3Inkling-Small
Level 1Second Thoughts
27 ptsSurvived
9 ptsOut of lives
Level 2Pressure Pot
6 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
Pending
8 ptsOut of lives

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.

GLM-5.3 25.6/100Rank 39/50

Cleared 2 of 5
Latch: complete playing field
Level 512.2 ptsTurn 14 / 40

Inkling-Small 34.7/100Rank 34/50

Cleared 3 of 5
Latch: complete playing field
Level 518 ptsTurn 40 / 40

Points per level

LevelGLM-5.3Inkling-Small
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9 ptsCleared
9.8 ptsCleared
Level 3Relay vault
7.6 ptsFinished early
2.8 ptsFinished early
Level 4Passing bay
3.2 ptsFinished early
8 ptsFinished early
Level 5Second thoughts
12.2 ptsFinished early
18 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

GLM-5.3

The sphere has readable rounded volume, and the compact black blob remains distinctly above it, supporting pre-impact separation. The extensive red and cyan coatings do not establish the required interaction history or paint scale. The sphere and black are substantially displaced downward. A centered upper panel, paired side patches and a vertically aligned partial floor image provide limited reflection cues, but ordered mirror-room repetitions and curved spherical imagery are largely missing.

Inkling-Small

The sphere's apparent floor support, separate dark feature and broad paint ordering justify partial state credit. The major weakness is the largely missing mirror system: isolated side images and faint floor echoes do not establish repeated virtual rooms or curved spherical mapping. Downward framing, the oversized frontal panel, unresolved paint transport and satin surface appearance remain distinct limitations.

Score breakdown

CategoryGLM-5.3Inkling-Small
State at 600 ms9.0/2514.0/25
Camera and placement9.0/153.0/15
Reflections10.0/1208.0/120
Materials and scale7.0/102.5/10
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

GLM-5.3

A luminous organic creature meets a geometric reflection in a carefully framed oval mirror. Shared glowing cores and fingertip contact make the introspective symbolism clear. Gold, cream and blue establish a controlled hierarchy. The creature’s lower anatomy and shoulder transition remain loosely defined, while ground contact and reflected depth are mostly symbolic. Elegant vector illustration rather than photographic rendering.

Inkling-Small

The faces and dripping caps communicate a cute mushroom scene, but simple construction and weak spatial relationships limit the result. The defining foot-stamping action is unresolved, the flattering portrait is smaller than its painter, and the requested material contrasts are only partly conveyed.

Score breakdown

CategoryGLM-5.3Inkling-Small
Task & likeness9.0/102.5/10
Anatomy & construction7.0/101.5/10
Space & placement7.0/103.5/10
Light & reflections8.0/103.0/10
Purposeful detail8.0/104.5/10
Artistry & character7.0/103.0/10
Materials & effects7.5/103.5/10
Visual integrity8.0/102.0/10

Benchmark task

GLM-5.3

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.

Inkling-Small

Character scenes test expression, anatomy, materials and coherent visual construction.

Mona Lisa

Same task instructions

Precise visual recall and portrait reconstruction.

The judgment

GLM-5.3

Recognizable Mona Lisa motifs include the dark veil, restrained smile, folded hands and muted landscape. Clean silhouettes and balanced framing support the portrait, but the frontal symmetry, elongated face, minimally articulated hands and broad background bands make the replication basic. Facial shading offers some volume; clothing and landscape remain mostly flat.

Inkling-Small

A recognizable but rudimentary Mona Lisa interpretation. Facial shading and subdued colors provide coherence, while the frontal blocklike torso, unresolved wrists, fingerless hands and shallow landscape substantially limit likeness, construction and finish.

Score breakdown

CategoryGLM-5.3Inkling-Small
Task & likeness3.0/102.5/10
Anatomy & construction2.0/102.5/10
Space & placement3.0/103.0/10
Light & reflections4.5/102.5/10
Purposeful detail3.0/102.0/10
Artistry & character2.5/102.5/10
Materials & effects3.5/102.0/10
Visual integrity4.0/103.0/10

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

GLM-5.3

A cohesive, colorful beach illustration with an inviting sunset, readable animals and playful foreground objects. Crisp silhouettes and small accessories reward inspection. Depth remains shallow, airborne dolphins lack convincing launch splashes, and several objects lack grounding shadows. The broad dark shape across the sun weakens the focal hierarchy.

Inkling-Small

A recognizable sunset beach with a clear focal sun and appealing color transitions. Connected fish silhouettes and layered scenery establish basic coherence. Primitive figures, ambiguous recreation, sparse descriptive detail and weak grounding limit construction and depth. The aligned reflection supplies a useful lighting cue, but shadows and material effects remain underdeveloped.

Score breakdown

CategoryGLM-5.3Inkling-Small
Task & likeness8.5/103.5/10
Anatomy & construction7.5/103.0/10
Space & placement7.0/103.0/10
Light & reflections7.0/103.0/10
Purposeful detail8.0/103.0/10
Artistry & character7.5/103.0/10
Materials & effects6.5/102.5/10
Visual integrity7.5/102.0/10

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

GLM-5.3

This benchmark has not been assessed yet.

Inkling-Small

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

GLM-5.3

The raccoon rides on the dog's back, and the dog reaches toward visible handlebars. Expressive faces and clean colors make the action readable. Overlapping paws and hindquarters weaken anatomical clarity, while the vehicle resembles a flat board with a thin steering post. The wake suggests motion, but water contact, shadows and reflections receive little development.

Inkling-Small

Recognizable animals, readable accessories and an appealing sunset support a coherent basic cartoon. Rounded construction leaves joints, riding support and steering unresolved. Decorative gradients contribute atmosphere, but directional lighting, distinct materials and convincing water displacement are weakly demonstrated.

Score breakdown

CategoryGLM-5.3Inkling-Small
Task & likeness6.5/104.0/10
Anatomy & construction4.5/103.0/10
Space & placement5.5/104.0/10
Light & reflections4.0/105.0/10
Purposeful detail5.0/105.5/10
Artistry & character4.0/104.0/10
Materials & effects5.0/105.0/10
Visual integrity7.5/105.0/10

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

GLM-5.3

The expressive pelican, broad bill and clean coastal composition make the subject immediately readable. Both legs connect to the body and reach pedals, but the front wheel lacks a connected fork and the wings do not engage visible handlebars. Crisp spokes and feather lines add interest; flat lighting, absent ground shadows and a fish floating above the horizon weaken physical coherence.

Inkling-Small

The pelican is immediately recognizable, and its sweeping neck, shaped bill and orderly spokes provide character. Riding remains only partially realized: legs, pedal engagement, steering and seat support cannot be read confidently. Controlled graphic effects add atmosphere, but simplified construction and weak grounding keep the result basic.

Score breakdown

CategoryGLM-5.3Inkling-Small
Task & likeness7.5/104.0/10
Anatomy & construction4.0/103.0/10
Space & placement6.0/103.0/10
Light & reflections4.0/103.0/10
Purposeful detail6.5/104.5/10
Artistry & character6.5/105.0/10
Materials & effects5.0/104.5/10
Visual integrity5.5/103.0/10

Benchmark task

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