STEALTHMARK · HEAD TO HEAD

All comparisons ↗

Cat Jam Free vs Nemotron 3 Ultra

Cat Jam Free leads Nemotron 3 Ultra by 16.8 points on StealthMark, 33.5 to 16.7. It leads on all 9 benchmarks. Cat Jam Free scores higher on Raccoon, with its largest category advantage in anatomy & construction.

See the difference ↘
Model guide ↗
All results ↗

Overall StealthMark

33.5/100Overall rank 40/53
16.7/100Overall rank 49/53

General Intelligence

27.7/100
12.2/100

Visual Intelligence

43.0/100
26.5/100

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

Open or local

NeitherApache-2.0

BENCHMARK BY BENCHMARK

Where each model leads

  • Cat Jam Free
  • Nemotron 3 Ultra
  • Other models
  • Median

DATASHEET

Specs and pricing

  • Cat Jam Free
  • Nemotron 3 Ultra
  • Other models
  • Median
PricePer 1M output tokens, input below
Cat Jam Free: No list priceNemotron 3 Ultra: $2.40$0.60 input
Context windowTokens per request, max output below
Cat Jam Free: Not publishedNemotron 3 Ultra: 1M
Output speedTokens per second, our measurement
Cat Jam Free: Not measuredNemotron 3 Ultra: 139tokens/s
SizeTotal and active parameters
Cat Jam Free: Not disclosedNemotron 3 Ultra: 550B55B active
Developer
Not publishedNVIDIA
Released
Not published4 Jun 2026
Origin
Not publishedUnited States
Input → output
Not publishedText → text
Architecture
Not publishedLatentMoE: Mamba-2 + MoE + Attention hybrid with Multi-Token Prediction

Full datasheets, every price and sourceNemotron 3 Ultra ↗

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.

Cat Jam Free 33.8/100Rank 26/47

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

Nemotron 3 Ultra 16.9/100Rank 41/47

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

Points per level

LevelCat Jam FreeNemotron 3 Ultra
Level 1Second Thoughts
5 ptsOut of lives
4 ptsOut of lives
Level 2Pressure Pot
6 ptsOut of lives
4 ptsOut of lives
Level 3Hide or Flight
9 ptsSurvived
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.

Cat Jam Free 33.9/100Rank 33/48

Cleared 2 of 5
Latch: complete playing field
Level 56 ptsTurn 25 / 40

Nemotron 3 Ultra 5.0/100Rank 42/484 of 5 levels

4 of 5 played
Latch: complete playing field
Level 413.8 ptsTurn 21 / 40

Points per level

LevelCat Jam FreeNemotron 3 Ultra
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
3.2 ptsFinished early
Level 3Relay vault
10 ptsFinished early
7.4 ptsFinished early
Level 4Passing bay
10.8 ptsFinished early
13.8 ptsFinished early
Level 5Second thoughts
6 ptsFinished early
Not played

Newton's Mirror

Same task instructions

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

The judgment

Cat Jam Free

The image conveys a supported central sphere, separate black paint and crimson below cyan. Its contact and transport story is partially resolved. The exterior cutaway camera and largely missing mirror system dominate the limitations; isolated discs and smooth highlights provide little coherent optical structure.

Nemotron 3 Ultra

The candidate establishes a separate airborne black blob and partial crimson overlap, but leaves the paint interaction history and settled support unresolved. Its main silhouette, black placement and lamp projection depart substantially from the required camera geometry. A few faint reflection hints provide little support for the extensive mirror system, while the compact paint volumes are visibly disproportionate.

Score breakdown

CategoryCat Jam FreeNemotron 3 Ultra
State at 600 ms14.0/252.0/25
Camera and placement4.0/153.5/15
Reflections3.5/1204.5/120
Materials and scale4.0/103.0/10
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

Cat Jam Free

A coherent, restrained cat illustration captures the pale palette and intent eyes. Its central expressive requirement—the committed forward-and-down neck bob—is insufficiently articulated. Simple geometry, faint paw construction and minimal surface detail limit the physical presence and finish.

Nemotron 3 Ultra

An endearing mechanical creature is clearly framed, with expressive amber eyes and readable segmented arms. The shell resembles layered green plates more than a deep coiled spiral. Detached-looking construction, absent working contacts and patchy rendering leave the central assembly action substantially unresolved.

Score breakdown

CategoryCat Jam FreeNemotron 3 Ultra
Task & likeness5.5/104.0/10
Anatomy & construction5.5/104.0/10
Space & placement6.0/105.5/10
Light & reflections6.0/105.0/10
Purposeful detail4.0/104.0/10
Artistry & character5.5/103.0/10
Materials & effects5.0/104.0/10
Visual integrity6.5/104.5/10

Benchmark task

Cat Jam Free

An ivory cat nods intently to music beside a tiny speaker. The scene tests feline anatomy, movement conveyed through a still pose and the contrast between pale fur and woven fabric.

Nemotron 3 Ultra

A hovering mechanical nautilus tests spiral construction, connected mechanical forms and contrasting metal and illuminated surfaces.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

Cat Jam Free

The portrait is recognizable and cleanly assembled, but replication remains basic. Its frontal symmetry, elongated silhouette, simplified facial likeness and unresolved hands differ markedly from the original. Modest skin gradients provide volume, while clothing and landscape rely on broad, flat shapes.

Nemotron 3 Ultra

The centered silhouette provides basic organization, but multicolored mottling and geometric overlays leave the portrait unresolved. No readable face, crossed hands, clothing or landscape establishes Mona Lisa replication. Texture and transparency offer limited visual effects without coherent anatomy, lighting or material distinctions.

Score breakdown

CategoryCat Jam FreeNemotron 3 Ultra
Task & likeness2.5/100.5/10
Anatomy & construction2.0/100.0/10
Space & placement4.0/101.0/10
Light & reflections3.5/100.5/10
Purposeful detail3.0/100.5/10
Artistry & character3.0/101.5/10
Materials & effects2.5/100.0/10
Visual integrity5.5/100.5/10

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

Cat Jam Free

The scene clearly supplies the requested beach subjects and playful activity. Clean silhouettes and warm gradients support readability, but elementary drawing, ambiguous parasol construction, weak grounding and a rigid sun reflection limit its depth and finish.

Nemotron 3 Ultra

A recognizable beach illustration with appealing warm-cool contrast, readable layers and mostly clean shapes. Unresolved seat construction, schematic animals and broad geometric foliage give it an elementary finish. Weakly coordinated reflections and limited material differentiation further constrain depth and atmosphere.

Score breakdown

CategoryCat Jam FreeNemotron 3 Ultra
Task & likeness7.0/106.5/10
Anatomy & construction4.5/103.0/10
Space & placement4.5/105.0/10
Light & reflections4.0/101.5/10
Purposeful detail4.0/104.5/10
Artistry & character4.5/103.0/10
Materials & effects4.5/102.5/10
Visual integrity5.5/106.5/10

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

Cat Jam Free

This benchmark has not been assessed yet.

Nemotron 3 Ultra

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

Cat Jam Free

An appealing cartoon demonstrates the back-riding arrangement through expressive faces and clean shapes. Uncertain steering contact, indistinct deck support and weak hull-water interaction limit physical coherence. Smooth gradients add volume, but simple rounded construction and sparse material detail constrain complexity and finish.

Nemotron 3 Ultra

The masked raccoon, dog and orange craft make the scene recognizable, with an appealing sunset palette. Overlapping bodies obscure the riding relationship, and the dog's connection to the controls remains unresolved. Weak water displacement, inconsistent shading and visible shape artifacts limit the finish. Ambiguous attachments do not establish detached limbs or inverted anatomy.

Score breakdown

CategoryCat Jam FreeNemotron 3 Ultra
Task & likeness6.0/103.5/10
Anatomy & construction5.0/101.5/10
Space & placement5.0/104.5/10
Light & reflections5.0/102.0/10
Purposeful detail6.0/103.5/10
Artistry & character5.0/101.5/10
Materials & effects5.0/103.0/10
Visual integrity4.5/102.0/10

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

Cat Jam Free

A coherent cartoon with readable bicycle placement, controlled outlines and modest surface shading. The separated-looking upper bill weakens pelican likeness; schematic limbs, uncertain gripping contact and simplified mechanics constrain construction. Opaque wheel interiors flatten spatial relationships. Limited feather complexity and directional lighting keep the finish modest.

Nemotron 3 Ultra

A recognizable, playful pelican dominates a readable bicycle scene. Its bill and silhouette succeed, but feet below the pedals and confused drivetrain connections weaken the riding action. Local material modeling adds interest; overlapping contours, repetitive detail and inconsistent shadows leave the illustration basic and uneven.

Score breakdown

CategoryCat Jam FreeNemotron 3 Ultra
Task & likeness7.0/104.0/10
Anatomy & construction5.0/103.5/10
Space & placement6.0/103.5/10
Light & reflections5.0/104.0/10
Purposeful detail5.5/105.5/10
Artistry & character5.5/104.0/10
Materials & effects6.5/106.0/10
Visual integrity6.5/103.0/10

Benchmark task

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