LodestonesAI ForeverImage model matchup

Chroma1-HDvs.Kandinsky 3.1

Which one is better?

We have not tested Kandinsky 3.1 ourselves yet. Neither is in the arena. Neither has an API price.

GraduallyBench Image v2Our own benchmark0 to 100 · higher is better

Chroma1-HD

Rank 92 of 108

n/a

Kandinsky 3.1

not tested yet

Ranks among the 21 image models with an arena rating and the 108 with a GraduallyBench Image v2 run; prices compared with 28 models with an API price.

Test images from GraduallyBench Image v2

Our own benchmarkThe images come from GraduallyBench Image v2, our own benchmark: every model gets the same four tasks, and two AI judges compare the images in pairs and blind.

Same task, the first image of each.

Chroma1-HD: Typography and layout, first image from the fixed test run — Chroma1-HD30 out of 100

No image from the four fixed tasks for Kandinsky 3.1 yet.

Kandinsky 3.1not tested yet

Result for “Typography and layout”:only Chroma1-HD tested

Prompt given to both modelsCreate a square editorial poster for an imaginary night train called MONDFALTER. Show the exact German headline MONDFALTER and the exact subline BERLIN NACH LISSABON. Use a restrained midnight-blue and warm-cream palette, one stylized moth, strong Swiss-grid typography, generous negative space, and no additional words or logos.

What the rating looks at: Legible text, hierarchy, and composition.

“Ahead”: the 95 % ranges of both values do not overlap. “Slightly ahead”: a higher value, but the ranges overlap.

Missing image run for Kandinsky 3.1

FusionBrain timed out during our check. The public 3.1 repository demonstrates a standalone Flash pipeline, while the vendor distinguishes 3.1 from 3.1 Flash. This does not unambiguously establish execution of the complete regular 3.1 offering; Flash results are not substituted. Last checked November 2, 2026. Resolve verified access or the complete vendor pipeline for the regular 3.1 offering.

Documentation

Subscription and API

Chroma1-HD

Subscription: n/a No plan in Germany names exactly this model.
Via API: No API price known (access: local).
Weights: Open weights.

Kandinsky 3.1

Subscription: n/a No plan in Germany names exactly this model.
Via API: No API price known (access: local).
Weights: Open weights.

Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.

GraduallyBench Image v2 from Nov 7, 2026 · Subscription database from Sep 29, 2026 (46 days old)

All data side by side

The better value is bold. For ratings only when the gap is clear.

Kennzahl	Chroma1-HD	Kandinsky 3.1
Ratings
Arena ratingfrom votes by users, higher is better	n/a	n/a
Arena rank	n/a	n/a
Arena votesmore votes, a safer rating	n/a	n/a
GraduallyBench Image v2our own benchmark, 0 to 100	21	n/a
GraduallyBench Image v2 by task
Typography and layoutLegible text, hierarchy, and composition	30	n/a
Product photographyMaterials, reflections, and fine details	9	n/a
Character and detailAnatomy, clothing, and spatial consistency	24	n/a
InfographicNumbers, labels, and visual organization	23	n/a
API price
Per imagelower is better	n/a	n/a
100 images	n/a	n/a
Profile
Released	n/a	n/a
Weightsopen means: runs locally	open	open
Access	local	local
Parameters	8.9 billion	not published
Largest output	not consistently published	not consistently published
Plans in Germanynaming exactly this model	n/a	n/a

API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.

Sources: Chroma1-HD model source (verified Nov 1, 2026) · Kandinsky 3.1 model source (verified Nov 2, 2026)

Arena ratings by category

From blind votes on Artificial Analysis and LMArena; the sources are named under the card. “Ahead” means the lead is clear.

No shared arena score in the stored snapshot

The stored benchmark database contains no measurement for Chroma1-HD and Kandinsky 3.1 from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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