STEALTHMARK · HEAD TO HEAD

All comparisons ↗

GPT-6.1 Terra vs MiniMax M3.1 Flash (early version)

GPT-6.1 Terra leads MiniMax M3.1 Flash (early version) by 14.9 points on StealthMark, 60.4 to 45.5. It leads on 6 of 9 benchmarks, including both games, and MiniMax M3.1 Flash (early version) on 3. GPT-6.1 Terra scores higher on Newton's Mirror, with its largest category advantage in reflections.

See the difference ↘
All results ↗
Model guide ↗

Overall StealthMark

60.4/100Overall rank 9/54
45.5/100Overall rank 27/54

General Intelligence

58.0/100
35.7/100

Visual Intelligence

64.9/100
64.4/100

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

  • MiniMax M3.1 Flash (early version)

BENCHMARK BY BENCHMARK

Where each model leads

  • GPT-6.1 Terra
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median

DATASHEET

Specs and pricing

  • GPT-6.1 Terra
  • MiniMax M3.1 Flash (early version)
  • Other models
  • Median
PricePer 1M output tokens, input below
GPT-6.1 Terra: $5$1 inputMiniMax M3.1 Flash (early version): No list price
Context windowTokens per request, max output below
GPT-6.1 Terra: 1.05M128K max outputMiniMax M3.1 Flash (early version): Not published
Output speedTokens per second, our measurement
GPT-6.1 Terra: Not measuredMiniMax M3.1 Flash (early version): 300tokens/s
Developer
OpenAINot published
Released
26 Oct 2026Not published
Origin
United StatesNot published
Input → output
Text, image → textNot published

Full datasheets, every price and sourceGPT-6.1 Terra ↗

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.

GPT-6.1 Terra 62.0/100Rank 9/50

Survived 2 of 3
Foresight: complete playing field
Level 315 ptsTurn 20 / 20

MiniMax M3.1 Flash (early version) 35.8/100Rank 26/50

Survived 0 of 3
Foresight: complete playing field
Level 38 ptsTurn 19 / 20

Points per level

LevelGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Level 1Second Thoughts
21 ptsSurvived
16 ptsOut of lives
Level 2Pressure Pot
9 ptsOut of lives
6 ptsOut of lives
Level 3Hide or Flight
15 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.

GPT-6.1 Terra 77.7/100Rank 12/51

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

MiniMax M3.1 Flash (early version) 34.4/100Rank 36/51

Cleared 3 of 5
Latch: complete playing field
Level 512.6 ptsTurn 17 / 40

Points per level

LevelGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Level 1Hold the door
5.2 ptsCleared
5 ptsCleared
Level 2Crossfeed
9.8 ptsCleared
9 ptsCleared
Level 3Relay vault
19.2 ptsCleared
16.2 ptsClearedFinished early · 3 beacons left
Level 4Passing bay
17.8 ptsClearedFinished early · 3 beacons left
10.4 ptsFinished early
Level 5Second thoughts
20.6 ptsCleared
12.6 ptsFinished early

Newton's Mirror

Same task instructions

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

MiniMax M3.1 Flash (early version) 24.9/100 Rank 34/54

Space Bunny Alpha: Newton's Mirror SVG benchmark
29 Sep onwardResult details ↗

The judgment

GPT-6.1 Terra

The sphere, airborne black and first reflected silhouettes preserve important geometry within the portrait frame. Paint deformation, contact order and forward transport are supported, with a small crimson endpoint overshoot. Major optical omissions dominate: short finite reflection sequences and smooth bands replace extensive, spatially ordered mirror imagery. Dark gloss and crisp upper emitter shapes provide partial material credit.

MiniMax M3.1 Flash (early version)

Visible panel shapes, curved sphere highlights, rounded side images and a lower continuation beneath the large left image establish recognizable local mirror structure. Their uneven arrangement, missing receding chains and absent nested imagery remain substantial shortcomings. The main sphere's framing is close, but black lacks projected separation and cyan does not establish recent apex contact.

Score breakdown

CategoryGPT-6.1 TerraMiniMax M3.1 Flash (early version)
State at 600 ms23.0/2511.0/25
Camera and placement11.0/159.0/15
Reflections33.0/12015.5/120
Materials and scale7.5/107.5/10
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.

MiniMax M3.1 Flash (early version) 78.9/100 Rank 3/54

Space Bunny Alpha: Selfie SVG benchmark
29 Sep onwardResult details ↗

The judgment

GPT-6.1 Terra

A balanced serpent emblem with six attached outward heads, delicate scales and softly rounded bodies. Its compact silhouette reads clearly, but central routing does not establish every alternating crossing or crisp inward corner. Repetitive texture, limited facial anatomy and weak contact shadows constrain its organic character.

MiniMax M3.1 Flash (early version)

The expressive rabbits, lavender moon and diagonal ring create an appealing storybook composition with nearly all requested features. Glossy eyes and pearly highlights work well. The helmet leaves the towering ears unenclosed, the reaching arm has little joint definition, and the spread boots suggest hovering more clearly than pushing off. Repeated scalloped fur marks and broad gradients limit material depth; purple edge halos soften otherwise controlled silhouettes.

Score breakdown

CategoryGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Task & likeness7.5/108.5/10
Anatomy & construction6.5/107.5/10
Space & placement6.5/107.5/10
Light & reflections6.0/108.0/10
Purposeful detail6.5/108.0/10
Artistry & character6.5/108.0/10
Materials & effects6.0/107.5/10
Visual integrity6.0/108.0/10

Benchmark task

GPT-6.1 Terra

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.

MiniMax M3.1 Flash (early version)

An astronaut rabbit reaches for a carrot above a small moon while a younger companion peeks into view. The scene tests expressive characters, spatial relationships and material detail.

Mona Lisa

Different task instructions

Precise visual recall and portrait reconstruction.

MiniMax M3.1 Flash (early version) 49.9/100 Rank 14/54

Space Bunny Alpha: Mona Lisa SVG benchmark
29 Sep onwardResult details ↗

The judgment

GPT-6.1 Terra

A recognizable interpretation with developed facial shading, shaped sleeve folds and purposeful small features. These strengths support modest upward calibration, while the frontal torso, elongated proportions, schematic finger joints and unresolved seated support keep replication and construction uneven.

MiniMax M3.1 Flash (early version)

The dark clothing, folded hands and muted landscape make the reference recognizable. Replication is limited by the broad frontal face, oversized head, explicit smile and simplified landscape. Arms connect coherently, but overlapping hands lack convincing finger construction. Soft gradients suggest volume and atmospheric depth; clothing folds and facial features remain schematic.

Score breakdown

CategoryGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Task & likeness5.5/104.5/10
Anatomy & construction6.5/105.0/10
Space & placement4.5/105.5/10
Light & reflections6.5/106.0/10
Purposeful detail6.0/104.0/10
Artistry & character6.0/105.0/10
Materials & effects6.0/104.5/10
Visual integrity6.5/105.5/10

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.

MiniMax M3.1 Flash (early version) 67.8/100 Rank 21/54

Space Bunny Alpha: Beach SVG benchmark
29 Sep onwardResult details ↗

The judgment

GPT-6.1 Terra

A coherent sunset illustration with clear prompt fulfillment, controlled framing and varied, purposeful small details. Simplified joints, frontal staging, flattened animal forms and weakly directional shadows limit its anatomical, spatial and physical sophistication.

MiniMax M3.1 Flash (early version)

A cheerful, coherent beach illustration with a strong sunset focal point, varied animals and readable small accessories. Connected flamingo legs and grounded foreground objects support the scene. Construction remains schematic, especially the airborne marine animal; its jump lacks clear water displacement. The sun reflection is effective but geometrically rigid, while shadows and material textures provide limited depth.

Score breakdown

CategoryGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Task & likeness8.5/108.5/10
Anatomy & construction7.5/106.0/10
Space & placement6.5/106.0/10
Light & reflections5.5/107.0/10
Purposeful detail7.5/106.5/10
Artistry & character7.0/106.5/10
Materials & effects6.5/106.0/10
Visual integrity7.5/107.5/10

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.

MiniMax M3.1 Flash (early version) 42.7/100 Rank 22/54

Space Bunny Alpha: Ground Truth SVG benchmark
29 Sep onwardResult details ↗

The judgment

GPT-6.1 Terra

This benchmark has not been assessed yet.

MiniMax M3.1 Flash (early version)

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

GPT-6.1 Terra

A coherent cartoon with expressive animals, readable steering and a clear wake. Fine facial and hull details reward inspection. The main limits are the boatlike craft, simplified joints, weakly braced frontal raccoon and minimal directional lighting or material depth.

MiniMax M3.1 Flash (early version)

The raccoon clearly rides on the dog's back, and the dog's paws reach a connected steering assembly. Expressive faces, controlled outlines and layered mountains make an appealing illustration. The seated anatomy and hull geometry are simplified, while the sunset has little corresponding reflection or directional shading. Curved spray conveys motion, although several splash ribbons look decorative.

Score breakdown

CategoryGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Task & likeness6.5/108.0/10
Anatomy & construction5.5/107.5/10
Space & placement6.0/107.5/10
Light & reflections5.0/106.5/10
Purposeful detail7.0/107.5/10
Artistry & character6.0/107.0/10
Materials & effects6.0/107.0/10
Visual integrity7.0/108.5/10

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.

MiniMax M3.1 Flash (early version) 68.0/100 Rank 21/54

Space Bunny Alpha: Pelican SVG benchmark
29 Sep onwardResult details ↗

The judgment

GPT-6.1 Terra

A coherent pelican cyclist with expressive proportions, purposeful feather detail and developed bicycle machinery. Continuous body contours, aligned wheels and readable pedal contacts support the scene. Simplified articulation, shallow modelling and an unresolved steering connection limit construction and placement.

MiniMax M3.1 Flash (early version)

The large pouched bill clearly identifies the pelican, and the balanced bicycle silhouette makes the action readable. Attached legs reach the crank area, but overlapping feet and crank lines leave pedal contact ambiguous. Consistent wheel scale, clean contours and a restrained coastal palette support an appealing composition. Lighting and surface treatment remain simple and mostly flat.

Score breakdown

CategoryGPT-6.1 TerraMiniMax M3.1 Flash (early version)
Task & likeness7.0/107.5/10
Anatomy & construction7.0/106.5/10
Space & placement6.0/107.5/10
Light & reflections5.5/106.5/10
Purposeful detail7.0/107.0/10
Artistry & character6.5/105.5/10
Materials & effects5.5/106.5/10
Visual integrity6.0/107.5/10

Benchmark task

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