STEALTHMARK · HEAD TO HEAD

All comparisons ↗

MiniMax M3.1 Flash vs Nemotron 3 Ultra

MiniMax M3.1 Flash leads Nemotron 3 Ultra by 29.2 points on StealthMark, 45.9 to 16.7. It leads on all 9 benchmarks. MiniMax M3.1 Flash scores higher on Newton's Mirror, with its largest category advantage in reflections.

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All results ↗
All results ↗

Overall StealthMark

45.9/100Overall rank 24/53
16.7/100Overall rank 49/53

General Intelligence

35.8/100
12.2/100

Visual Intelligence

62.6/100
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

BENCHMARK BY BENCHMARK

Where each model leads

  • MiniMax M3.1 Flash
  • Nemotron 3 Ultra
  • Other models
  • Median

DATASHEET

Specs and pricing

Both take about 1M tokens of context.

  • MiniMax M3.1 Flash
  • Nemotron 3 Ultra
  • Other models
  • Median
PricePer 1M output tokens, input below
MiniMax M3.1 Flash: No list priceNemotron 3 Ultra: $2.40$0.60 input
Context windowTokens per request, max output below
MiniMax M3.1 Flash: 1MTiedNemotron 3 Ultra: 1MTied
Output speedTokens per second, our measurement
MiniMax M3.1 Flash: Not measuredNemotron 3 Ultra: 139tokens/s
SizeTotal and active parameters
MiniMax M3.1 Flash: 428B23B activeNemotron 3 Ultra: 550B55B active
Developer
MiniMaxNVIDIA
Released
Not published4 Jun 2026
Origin
Not publishedUnited States
Input → output
Text, image, video → textText → text
Architecture
Mixture-of-Experts with MiniMax Sparse Attention and native multimodal encoderLatentMoE: Mamba-2 + MoE + Attention hybrid with Multi-Token Prediction

Full datasheets, every price and sourceMiniMax M3.1 Flash ↗Nemotron 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.

MiniMax M3.1 Flash 30.7/100Rank 28/47

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

LevelMiniMax M3.1 FlashNemotron 3 Ultra
Level 1Second Thoughts
6 ptsOut of lives
4 ptsOut of lives
Level 2Pressure Pot
5 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.

MiniMax M3.1 Flash 21.9/100Rank 38/48

Cleared 2 of 5
Latch: complete playing field
Level 517.2 ptsTurn 24 / 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

LevelMiniMax M3.1 FlashNemotron 3 Ultra
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
8.6 ptsClearedFinished early · 1 beacon left
3.2 ptsFinished early
Level 3Relay vault
5 ptsOut of turns
7.4 ptsFinished early
Level 4Passing bay
4.4 ptsFinished early
13.8 ptsFinished early
Level 5Second thoughts
17.2 ptsFinished early
Not played

Newton's Mirror

Same task instructions

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

The judgment

MiniMax M3.1 Flash

The sphere placement, separate airborne black blob, recent cyan contact and elongated crimson aftermath support the required gross physical state. The reflection system remains severely incomplete: isolated side images, broad metallic bands and sparse light patches replace extensive mirror repetitions and curved nested imagery.

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

CategoryMiniMax M3.1 FlashNemotron 3 Ultra
State at 600 ms20.0/252.0/25
Camera and placement10.0/153.5/15
Reflections24.0/1204.5/120
Materials and scale8.0/103.0/10
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

MiniMax M3.1 Flash

The sculptural M, confident grin and miniature theatrical pose closely fulfill the brief. Controlled gradients and clean shapes give the character volume and appeal. Moderate drawing complexity, an apparently separated shoe and ambiguous grounding limit the 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

CategoryMiniMax M3.1 FlashNemotron 3 Ultra
Task & likeness7.5/104.0/10
Anatomy & construction6.0/104.0/10
Space & placement7.0/105.5/10
Light & reflections6.0/105.0/10
Purposeful detail5.0/104.0/10
Artistry & character6.0/103.0/10
Materials & effects7.0/104.0/10
Visual integrity6.0/104.5/10

Benchmark task

MiniMax M3.1 Flash

A small robot with an oversized angular head presents a glowing object. The scene tests character proportions, gesture and contrasting materials.

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

MiniMax M3.1 Flash

A coherent decorative portrait combines layered hair, garment contours, linked trim and atmospheric scenery. These provide meaningful drawing complexity, but likeness remains limited by the frontal elongated face and altered clothing. Compressed hands, abrupt facial shading and cluttered local edges leave the portrait uneven.

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

CategoryMiniMax M3.1 FlashNemotron 3 Ultra
Task & likeness4.0/100.5/10
Anatomy & construction4.5/100.0/10
Space & placement5.5/101.0/10
Light & reflections4.5/100.5/10
Purposeful detail5.5/100.5/10
Artistry & character6.0/101.5/10
Materials & effects5.5/100.0/10
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

Different task instructions

Creativity, perspective and visual beauty.

The judgment

MiniMax M3.1 Flash

A controlled, detailed beach illustration with expressive animals, coherent depth and accomplished foliage and accessory drawing. Its warm palette and varied contours sustain visual interest. Simplified anatomy and object volumes limit physical conviction, while reflection streaks crossing dry-looking sand and generic shadows weaken the lighting.

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

CategoryMiniMax M3.1 FlashNemotron 3 Ultra
Task & likeness8.5/106.5/10
Anatomy & construction7.0/103.0/10
Space & placement7.5/105.0/10
Light & reflections6.0/101.5/10
Purposeful detail8.0/104.5/10
Artistry & character6.5/103.0/10
Materials & effects6.5/102.5/10
Visual integrity7.5/106.5/10

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

MiniMax M3.1 Flash

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

Different task instructions

Scene composition and interacting subjects.

The judgment

MiniMax M3.1 Flash

An expressive, coherent cartoon clearly demonstrates the requested riding and steering relationship. Layered animal shapes, readable vehicle depth and purposeful facial details support its drawing quality. Ambiguous grips, sparse cast shadows and simplified material responses limit physical precision.

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

CategoryMiniMax M3.1 FlashNemotron 3 Ultra
Task & likeness9.0/103.5/10
Anatomy & construction8.0/101.5/10
Space & placement8.0/104.5/10
Light & reflections6.0/102.0/10
Purposeful detail7.5/103.5/10
Artistry & character7.5/101.5/10
Materials & effects7.0/103.0/10
Visual integrity8.0/102.0/10

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

Different task instructions

Subject construction and spatial relationships.

The judgment

MiniMax M3.1 Flash

A controlled coastal illustration with a clear pelican silhouette, detailed wheels and accomplished feather and bill drawing. Continuous body construction and grounded wheels support the scene. Ambiguous leg, pedal and steering contacts weaken the riding mechanics; approximate directional lighting and simplified materials limit physical conviction.

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

CategoryMiniMax M3.1 FlashNemotron 3 Ultra
Task & likeness8.5/104.0/10
Anatomy & construction6.5/103.5/10
Space & placement8.0/103.5/10
Light & reflections7.0/104.0/10
Purposeful detail7.5/105.5/10
Artistry & character6.5/104.0/10
Materials & effects7.0/106.0/10
Visual integrity6.5/103.0/10

Benchmark task

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