STEALTHMARK · HEAD TO HEAD

All comparisons ↗

MiMo-V2.6-Pro vs Mistral Large 4

MiMo-V2.6-Pro leads Mistral Large 4 by 4.6 points on StealthMark, 47.9 to 43.3. Mistral Large 4 leads on 5 of 9 benchmarks and MiMo-V2.6-Pro on 4, including both games. MiMo-V2.6-Pro scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
All results ↗

Overall StealthMark

47.9/100Overall rank 21/53
43.3/100Overall rank 31/53

General Intelligence

44.3/100
34.4/100

Visual Intelligence

54.3/100
58.0/100

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

  • MiMo-V2.6-Pro
  • Mistral Large 4
  • Other models
  • Median

DATASHEET

Specs and pricing

MiMo-V2.6-Pro scores higher on StealthMark and is 4.8× cheaper per output token. Mistral Large 4 runs 30% faster in our speed test. Both take about 1M tokens of context.

  • MiMo-V2.6-Pro
  • Mistral Large 4
  • Other models
  • Median
PricePer 1M output tokens, input below
MiMo-V2.6-Pro: $0.874.8× cheaper$0.43 inputMistral Large 4: $4.18$1.36 input
Context windowTokens per request, max output below
MiMo-V2.6-Pro: 1MTied128K max outputMistral Large 4: 1MTied256K max output
Output speedTokens per second, our measurement
MiMo-V2.6-Pro: 116tokens/sMistral Large 4: 15130% fastertokens/s
SizeTotal and active parameters
MiMo-V2.6-Pro: 1.02T42B activeMistral Large 4: 1.05T49B active
Developer
XiaomiMistral AI
Released
21 Sep 20266 Oct 2026
Origin
ChinaFrance
Input → output
Text, image, video, audio → textText, image → text
Architecture
Sparse Mixture-of-Experts; OpenRouter maps the route to the released Pro-RL checkpoint. The UltraSpeed edition is a separate routeGranular mixture of experts (MoE); multimodal text and image input, text output.

Full datasheets, every price and sourceMiMo-V2.6-Pro ↗Mistral Large 4 ↗

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.

MiMo-V2.6-Pro 54.6/100Rank 13/47

Survived 1 of 3
Foresight: complete playing field
Level 319 ptsTurn 20 / 20

Mistral Large 4 22.0/100Rank 39/47

Survived 0 of 3
Foresight: complete playing field
Level 34 ptsTurn 8 / 20

Points per level

LevelMiMo-V2.6-ProMistral Large 4
Level 1Second Thoughts
4 ptsOut of lives
1 ptsOut of lives
Level 2Pressure Pot
9 ptsOut of lives
9 ptsOut of lives
Level 3Hide or Flight
19 ptsSurvived
4 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.

MiMo-V2.6-Pro 52.6/100Rank 22/48

Cleared 5 of 5
Latch: complete playing field
Level 520.4 ptsTurn 28 / 40

Mistral Large 4 49.4/100Rank 23/48

Cleared 5 of 5
Latch: complete playing field
Level 519.8 ptsTurn 31 / 40

Points per level

LevelMiMo-V2.6-ProMistral Large 4
Level 1Hold the door
5.2 ptsCleared
5.2 ptsCleared
Level 2Crossfeed
9 ptsClearedFinished early · 1 beacon left
9.6 ptsCleared
Level 3Relay vault
17.2 ptsClearedFinished early · 1 beacon left
15.8 ptsClearedFinished early · 3 beacons left
Level 4Passing bay
16 ptsClearedFinished early · 3 beacons left
16.2 ptsClearedFinished early · 3 beacons left
Level 5Second thoughts
20.4 ptsCleared
19.8 ptsCleared

Newton's Mirror

Same task instructions

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

The judgment

MiMo-V2.6-Pro

The main framing and visible paint-contact story are well supported. Major optical omissions dominate the result: sparse repetitions, undersized first images, missing outer chains and absent curved nested imagery prevent a coherent mirror-room system. The metallic forms remain convincing in volume but have a soft illustrative finish.

Mistral Large 4

The central sphere, airborne black and deformed crimson support substantial state and placement credit. Recent cyan contact and crimson transport remain uncertain. Sparse wall patches and glossy gradients provide little evidence of the required extensive mirror system, while the missing centerline lamp and bulky crimson remain visible weaknesses.

Score breakdown

CategoryMiMo-V2.6-ProMistral Large 4
State at 600 ms23.0/2517.0/25
Camera and placement12.0/1511.0/15
Reflections19.0/12012.0/120
Materials and scale7.5/105.5/10
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

MiMo-V2.6-Pro

An appealing rabbit with balanced framing, expressive eyes and purposeful costume accents. Simple frontal construction limits anatomical and spatial accomplishment. The orange orb provides an effective luminous focal point, but unreadable wrist connections weaken the requested gestures and prevent stronger integrity credit.

Mistral Large 4

An appealing, coherent illustration whose enormous rounded cat anchors the windblown composition. Warm shading and floating sketches communicate the brief well. Simplified paws, faint ear construction, inconsistent wind cues and limited material texture keep the execution below exceptional.

Score breakdown

CategoryMiMo-V2.6-ProMistral Large 4
Task & likeness6.5/108.0/10
Anatomy & construction5.0/107.0/10
Space & placement5.5/107.5/10
Light & reflections6.5/107.0/10
Purposeful detail6.5/107.0/10
Artistry & character5.0/107.0/10
Materials & effects6.5/107.0/10
Visual integrity6.0/108.0/10

Benchmark task

MiMo-V2.6-Pro

A small rabbit in an explorer outfit floats with a luminous orb. The scene tests character anatomy, pose and the placement of geometric forms around it.

Mistral Large 4

A heavy ginger cat stays planted on a terrace as wind carries papers around it. The scene tests weight, expression and the contrast between stable and moving forms.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

The judgment

MiMo-V2.6-Pro

The portrait is recognizable through its dark silhouette, slight smile and muted landscape, but replication is weak. A frontal, oversized head and symmetric torso replace the reference's turned seated pose; angular, separated hands omit its central gesture. Smooth shading maintains coherence while anatomical detail, depth and material rendering remain basic.

Mistral Large 4

A recognizable, cleanly rendered interpretation with a restrained palette and some facial modeling. Its enlarged frontal head, simplified expression, compressed low hands and schematic landscape substantially limit likeness and construction. The smooth rendering does not reproduce the painting's nuanced anatomy, clothing or atmospheric depth.

Score breakdown

CategoryMiMo-V2.6-ProMistral Large 4
Task & likeness3.5/104.0/10
Anatomy & construction3.5/103.5/10
Space & placement4.0/105.0/10
Light & reflections5.0/104.5/10
Purposeful detail3.0/104.0/10
Artistry & character4.0/104.0/10
Materials & effects4.0/104.5/10
Visual integrity6.0/105.5/10

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

MiMo-V2.6-Pro

A readable sunset beach with clear requested subjects, appealing framing and purposeful accessories. Schematic anatomy, flattened foreground objects, repetitive water highlights and sparse directional shadows limit construction and physical depth. The kite's unresolved anchor also constrains integrity.

Mistral Large 4

A clean, appealing beach illustration with clear subject coverage, a cohesive sunset palette and expressive animal details. Bodies and accessories resolve basic construction coherently, although joints remain schematic. Layered shapes establish modest depth; generic oval shadows and flat surfaces limit physical richness. Repeated forms and sparse articulation leave room for more accomplished drawing.

Score breakdown

CategoryMiMo-V2.6-ProMistral Large 4
Task & likeness8.5/107.5/10
Anatomy & construction5.0/106.0/10
Space & placement6.0/107.0/10
Light & reflections6.5/106.5/10
Purposeful detail6.5/106.0/10
Artistry & character5.0/106.0/10
Materials & effects6.0/106.5/10
Visual integrity6.0/108.0/10

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

MiMo-V2.6-Pro

This benchmark has not been assessed yet.

Mistral Large 4

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

MiMo-V2.6-Pro

A coherent, cheerful cartoon with recognizable animals, readable steering contact and useful small details. The dog's orientation follows the craft more successfully than a wholly frontal pose would. Simple anatomy, weak raccoon grip and compressed seating contacts still limit physical credibility. Gradients and spray provide polish without resolving complex construction.

Mistral Large 4

The central interaction is clear, with recognizable animals, expressive faces and a coherent sunset composition. Clean contours and readable accessories give the cartoon polish. Simplified joints, uncertain steering attachment, shallow hull volume and limited directional lighting constrain its physical resolution.

Score breakdown

CategoryMiMo-V2.6-ProMistral Large 4
Task & likeness7.0/108.5/10
Anatomy & construction5.0/106.5/10
Space & placement5.5/107.0/10
Light & reflections5.5/105.5/10
Purposeful detail6.0/107.5/10
Artistry & character4.0/106.5/10
Materials & effects5.5/106.5/10
Visual integrity4.5/108.0/10

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

MiMo-V2.6-Pro

The distinctive bill, continuous silhouette and detailed wheels establish a readable pelican cyclist. Shaped feathers and soft shading add character, but jointless legs, crowded pedal contacts, absent steering contact and loosely directional lighting limit the construction. The comparisons support retaining the baseline category scores.

Mistral Large 4

A coherent, appealing pelican illustration with a continuous body silhouette, readable bicycle and grounded wheels. Simplified legs and ambiguous steering and pedal connections limit construction. Clean shapes and expressive accessories succeed, while shallow depth, modest lighting and sparse material differentiation leave substantial room for refinement.

Score breakdown

CategoryMiMo-V2.6-ProMistral Large 4
Task & likeness6.5/108.5/10
Anatomy & construction5.0/106.0/10
Space & placement6.0/107.0/10
Light & reflections5.5/106.5/10
Purposeful detail6.0/107.0/10
Artistry & character6.0/107.0/10
Materials & effects5.5/106.5/10
Visual integrity6.0/108.0/10

Benchmark task

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