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Head-to-head comparison

HiDream-O1-Image-1.5 vs. GPT Image 2.5 Flare

Compare shared capability tests, arena scores with documented retrieval dates, task-specific image pricing, and verified specifications. Research benchmarks, preference arenas, and our n = 1 samples remain separate.

shared result series
5
shared sample prompts
4
latest arena retrieval
2026-09-22

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Specifications and cost

General specifications and task-specific pricing

A model can have one price for generating new images and another for editing. Prices therefore remain tied to the corresponding arena configuration.

Specifications and pricing for HiDream-O1-Image-1.5 and GPT Image 2.5 Flare
AttributeHiDream-O1-Image-1.5GPT Image 2.5 Flare
ProviderHiDreamOpenAI
ReleasedJune 2026September 8, 2026
AccessAPI, Web appAPI
LifecycleNo separate lifecycle noticeNo separate lifecycle notice
WeightsProprietaryProprietary
ParametersNot publishedNot published
Maximum output2,048 × 2,048 pixelsNot consistently published
Arena configurationNo separate configuration namedNo separate configuration named
Text-to-image price$80 per 1,000 images$210.7 per 1,000 images
Editing priceNo arena entry$210.7 per 1,000 images
Technical sourceModel sourceVerified 2026-09-22Model sourceVerified 2026-09-22
HiDream-O1-Image-1.5GPT Image 2.5 Flare
Text to Image ArenaUSD per 1,000 images at 1,024 × 1,024 pixels
HiDream-O1-Image-1.5Lower price$80
GPT Image 2.5 Flare$210.7

Key to the marks:better valuebetter, but not conclusivetie

Prompt adherence and specialist tests

Shared capability benchmarks

Both checkpoints completed the same four Gradually sample tasks. For each task, 30 archived first outputs are ranked in three differently ordered, model-blind passes. The published 0-100 value normalizes the mean rank. It must still be read as an n = 1 sample per model. No exact shared result from the integrated research benchmarks is available for this pair.

HiDream-O1-Image-1.5GPT Image 2.5 Flare
Gradually sample test: Typography and layoutMean of three blind ranks across all 30 first outputs, n = 1 each
HiDream-O1-Image-1.5Higher blind-rank score55.2 / 100
GPT Image 2.5 Flare33.3 / 100
Gradually sample test: Product photographyMean of three blind ranks across all 30 first outputs, n = 1 each
HiDream-O1-Image-1.533.3 / 100
GPT Image 2.5 FlareHigher blind-rank score43.7 / 100
Gradually sample test: Character and detailMean of three blind ranks across all 30 first outputs, n = 1 each
HiDream-O1-Image-1.559.8 / 100
GPT Image 2.5 FlareHigher blind-rank score87.3 / 100
Gradually sample test: InfographicMean of three blind ranks across all 30 first outputs, n = 1 each
HiDream-O1-Image-1.5Higher blind-rank score77 / 100
GPT Image 2.5 Flare60.9 / 100

Key to the marks:better valuebetter, but not conclusivetie

Capability benchmark scores for HiDream-O1-Image-1.5 and GPT Image 2.5 Flare
BenchmarkHiDream-O1-Image-1.5GPT Image 2.5 Flare
Gradually sample test: Typography and layout
Higher blind-rank score55.2 / 100
Mean rank: 14 (12 / 16 / 14)
Five rubric scores
Headline: 1.67 / 2
Subline: 1.67 / 2
Text control: 1.67 / 2
Visual brief: 1.67 / 2
Layout: 1 / 2
33.3 / 100
Mean rank: 20.33 (21 / 17 / 23)
Five rubric scores
Headline: 1.67 / 2
Subline: 1.67 / 2
Text control: 1.67 / 2
Visual brief: 1.33 / 2
Layout: 1 / 2
Gradually sample test: Product photography
33.3 / 100
Mean rank: 20.33 (16 / 20 / 25)
Five rubric scores
Subject: 1.67 / 2
Time: 1.67 / 2
Watch details: 1.33 / 2
Photography: 1.67 / 2
Exclusions: 1.67 / 2
Higher blind-rank score43.7 / 100
Mean rank: 17.33 (19 / 10 / 23)
Five rubric scores
Subject: 1.67 / 2
Time: 1.67 / 2
Watch details: 1 / 2
Photography: 1.67 / 2
Exclusions: 1.67 / 2
Gradually sample test: Character and detail
59.8 / 100
Mean rank: 12.67 (17 / 8 / 13)
Five rubric scores
Scene: 1 / 2
Wardrobe: 1 / 2
Anatomy: 1 / 2
Props: 1 / 2
Environment: 1 / 2
Higher blind-rank score87.3 / 100
Mean rank: 4.67 (2 / 1 / 11)
Five rubric scores
Scene: 1 / 2
Wardrobe: 1 / 2
Anatomy: 1 / 2
Props: 1 / 2
Environment: 1 / 2
Gradually sample test: Infographic
Higher blind-rank score77 / 100
Mean rank: 7.67 (9 / 7 / 7)
Five rubric scores
Title: 1.67 / 2
Sequence: 1.67 / 2
Labels: 1.67 / 2
Diagram: 1 / 2
Clarity: 1.33 / 2
60.9 / 100
Mean rank: 12.33 (12 / 11 / 14)
Five rubric scores
Title: 1.67 / 2
Sequence: 1.67 / 2
Labels: 1 / 2
Diagram: 1.67 / 2
Clarity: 1 / 2

Key to the marks:better valuebetter, but not conclusivetie

Independent preference tests

Shared arena benchmarks

Artificial Analysis and Arena derive scores from blind comparisons. Raters see outputs for the same prompt and choose the image they prefer. Separate series cover text rendering, photorealism, portraits, art, commercial design, and image editing. Confidence intervals indicate how certain a measured lead is.

1 shared result series
HiDream-O1-Image-1.5GPT Image 2.5 Flare
Text to Image ArenaBlind preference from the same prompt, higher is better
HiDream-O1-Image-1.51,022 Elo
GPT Image 2.5 FlareHigher score1,190 Elo

Key to the marks:better valuebetter, but not conclusivetie

Arena benchmark scores for HiDream-O1-Image-1.5 and GPT Image 2.5 Flare
BenchmarkHiDream-O1-Image-1.5GPT Image 2.5 FlareSource
Text to Image Arena
1,022 Elo
Rank 24, 95% confidence interval: ±8, 13,011 ratings
Higher score1,190 Elo
Rank 2, 95% confidence interval: ±9, 12,778 ratings
Artificial AnalysisRetrieved 2026-09-22

Key to the marks:better valuebetter, but not conclusivetie

Visual comparison

Sample images

Our images complement preference data, but do not replace it. The prompt, request count, and selection rule match. Provider resolution, quality tier, randomness, and prompt processing remain visible limitations, so this is not a fully controlled laboratory test.

Largely standardized comparison protocol. Both models receive the same archived prompt, exactly one request, and the first result counts. Files are normalized to 1,024 × 1,024 pixels without cropping. Provider resolution, randomness, quality tier, and prompt processing can still differ. These images are a practical visual test, not a reconstruction of the arena configuration.

Character and detail

Anatomy, clothing, and spatial consistency

GPT Image 2.5 Flare, Character and detail
HiDream-O1-Image-1.5, Character and detail
HiDream-O1-Image-1.5
GPT Image 2.5 Flare
Prompt and settings

Create a square cinematic full-body portrait of a fictional bicycle courier waiting under a transparent umbrella at a rainy tram stop in Hamburg at blue hour. She wears a mustard raincoat, navy trousers, red sneakers, a silver helmet, and carries a teal messenger bag. Keep both hands visible, render the bicycle correctly, use realistic wet-street reflections, and include no readable brand names.

HiDream-O1-Image-1.5. Provider Manual import, one request, first output, HiDream O1 Image 1.5, 1:1, 2K, n=1, no reference image, no negative prompt, Vivago web, 2 free credits, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 16, 2026, 1:07 PM. Source
GPT Image 2.5 Flare. Provider OpenAI, 1024x1024, quality high, n=1, model ID gpt-image-2.5-flare, generated Sep 28, 2026, 8:53 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

HiDream-O1-Image-1.5, image SHA 256: 99db95d2f6f00dc7f8872b5562b7577a49065a120d15fc54f687ba624fe4cf6e

GPT Image 2.5 Flare, image SHA 256: 85b17c41b19389cae3ea073ef582e6065a321d741978e772987d22e3ea3e3b08

GPT Image 2.5 Flare, request SHA 256: e1238a1112d45fcc4474ed85f5504be75304152073d5f320d732f5b8c431c759

Infographic

Numbers, labels, and visual organization

GPT Image 2.5 Flare, Infographic
HiDream-O1-Image-1.5, Infographic
HiDream-O1-Image-1.5
GPT Image 2.5 Flare
Prompt and settings

Create a square German infographic titled SO FUNKTIONIERT PHOTOSYNTHESE. Show exactly four numbered steps in this order: 1 LICHT, 2 WASSER, 3 CO₂, 4 ZUCKER + SAUERSTOFF. Use a clean editorial science style with one plant cross-section, simple arrows, high contrast, legible labels, and no other text.

HiDream-O1-Image-1.5. Provider Manual import, one request, first output, HiDream O1 Image 1.5, 1:1, 2K, n=1, no reference image, no negative prompt, Vivago web, 2 free credits, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 16, 2026, 1:07 PM. Source
GPT Image 2.5 Flare. Provider OpenAI, 1024x1024, quality high, n=1, model ID gpt-image-2.5-flare, generated Sep 28, 2026, 8:53 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

HiDream-O1-Image-1.5, image SHA 256: 073d00d82d82a05c20f9117a18e71e21fe0300fd9f4985608be09726b1ee70a8

GPT Image 2.5 Flare, image SHA 256: bc752abfce1c0d27b73e4084c3e7d82c4c0f71e0e5af97a80f4b24326cc4686e

GPT Image 2.5 Flare, request SHA 256: 8cd44a51b90bec6394d45d678bdfaa16e0fe014a237582999a2370b2e3db1c0b

Product photography

Materials, reflections, and fine details

GPT Image 2.5 Flare, Product photography
HiDream-O1-Image-1.5, Product photography
HiDream-O1-Image-1.5
GPT Image 2.5 Flare
Prompt and settings

Create a square premium product photograph of a brushed titanium wristwatch standing upright on dark green marble. The watch has a cream dial, thin black hands set to 10:10, twelve distinct hour markers, a realistic crown, and a dark brown leather strap. Soft window light from the left, controlled reflections, shallow depth of field, no text, no logo, no extra objects.

HiDream-O1-Image-1.5. Provider Manual import, one request, first output, HiDream O1 Image 1.5, 1:1, 2K, n=1, no reference image, no negative prompt, Vivago web, 2 free credits, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 16, 2026, 1:07 PM. Source
GPT Image 2.5 Flare. Provider OpenAI, 1024x1024, quality high, n=1, model ID gpt-image-2.5-flare, generated Sep 28, 2026, 8:53 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

HiDream-O1-Image-1.5, image SHA 256: 98de28b81a3551441936ce2ebcc0b418e69e9d5cf6ce8b1dc281bc90b05731dc

GPT Image 2.5 Flare, image SHA 256: 69fedb7d635d1329c461ff1ee9e5cf8384119e218e3b3bdb93b9e11f728335d8

GPT Image 2.5 Flare, request SHA 256: a305103045fa5c2ede55b612333ab07c44dc0128f3d2faec67b8a117e52a82f0

Typography and layout

Legible text, hierarchy, and composition

GPT Image 2.5 Flare, Typography and layout
HiDream-O1-Image-1.5, Typography and layout
HiDream-O1-Image-1.5
GPT Image 2.5 Flare
Prompt and settings

Create 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.

HiDream-O1-Image-1.5. Provider Manual import, one request, first output, HiDream O1 Image 1.5, 1:1, 2K, n=1, no reference image, no negative prompt, Vivago web, 2 free credits, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 16, 2026, 1:07 PM. Source
GPT Image 2.5 Flare. Provider OpenAI, 1024x1024, quality high, n=1, model ID gpt-image-2.5-flare, generated Sep 28, 2026, 8:52 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

HiDream-O1-Image-1.5, image SHA 256: db5acbc9b443ea381bf6294997720fa246cf8a199f91d451aa1d7242fc4a348a

GPT Image 2.5 Flare, image SHA 256: cc90d54a99e1bad9e0cc8e4196746fb1d56a2fdd2a9ee101dbbf270ef5e4b6a8

GPT Image 2.5 Flare, request SHA 256: ec1fe63f04c319c731a93750e3d864df87e3f36142b33d88a3e1b5c5971aa2a5

How to read this comparison

An Elo score is not a verdict on creativity

A higher arena score means this specific configuration was preferred more often in blind comparisons.

Typography, character consistency, local execution, licensing, and price may matter more to your workload than overall visual appeal.

Prices cover 1,000 images at 1,024 × 1,024 pixels using settings documented by Artificial Analysis. Subscriptions and special rates are excluded.

More matchups

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