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Head-to-head comparison

GPT Image 1.5 vs. HiDream-O1-Image

Compare arena scores with documented retrieval dates, task-specific image pricing, and verified specifications. Text-to-image generation and image editing are never blended into an artificial overall score.

10

shared result series

4

shared sample prompts

2026-08-16

latest arena retrieval

Change image model selection

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 GPT Image 1.5 and HiDream-O1-Image
AttributeGPT Image 1.5HiDream-O1-Image
ProviderOpenAIHiDream
ReleasedDecember 2025May 2026
AccessAPI, Web appAPI, local
LifecycleMarked as deprecated by OpenAI Status sourceNo separate lifecycle notice
WeightsProprietaryOpen weights
ParametersNot published8 billion
Maximum output1,536 × 1,024 pixels2,048 × 2,048 pixels
Arena configurationHighNo separate configuration named
Text-to-image price$133 per 1,000 imagesNo comparable API price
Editing price$133 per 1,000 images$10 per 1,000 images
Technical sourceModel sourceVerified 2026-08-15Model sourceVerified 2026-08-15
GPT Image 1.5HiDream-O1-Image
Image Editing ArenaUSD per 1,000 images at 1,024 × 1,024 pixels
GPT Image 1.5$133
HiDream-O1-Image$10Lower price

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.

10 shared result series
GPT Image 1.5HiDream-O1-Image
Text to Image ArenaBlind preference from the same prompt, higher is better
GPT Image 1.51,313 EloHigher arena score
HiDream-O1-Image1,178 Elo
Image Editing ArenaBlind preference from the same prompt, higher is better
GPT Image 1.51,252 EloHigher arena score
HiDream-O1-Image1,195 Elo
Arena Text to Image: 3D modelingBlind preference from the same prompt, higher is better
GPT Image 1.51,215.437 arena pointsHigher arena score
HiDream-O1-Image1,122.629 arena points
Arena Text to Image: ArtBlind preference from the same prompt, higher is better
GPT Image 1.51,223.911 arena pointsHigher arena score
HiDream-O1-Image1,122.865 arena points
Arena Text to Image: CartoonBlind preference from the same prompt, higher is better
GPT Image 1.51,243.08 arena pointsHigher arena score
HiDream-O1-Image1,122.842 arena points
Arena Text to Image: Commercial designBlind preference from the same prompt, higher is better
GPT Image 1.51,240.908 arena pointsHigher arena score
HiDream-O1-Image1,128.773 arena points
Arena Text to Image: OverallBlind preference from the same prompt, higher is better
GPT Image 1.51,238.658 arena pointsHigher arena score
HiDream-O1-Image1,118.314 arena points
Arena Text to Image: PhotorealismBlind preference from the same prompt, higher is better
GPT Image 1.51,248.785 arena pointsHigher arena score
HiDream-O1-Image1,111.024 arena points
Arena Text to Image: PortraitsBlind preference from the same prompt, higher is better
GPT Image 1.51,261.416 arena pointsHigher arena score
HiDream-O1-Image1,107.311 arena points
Arena Text to Image: Text renderingBlind preference from the same prompt, higher is better
GPT Image 1.51,254.593 arena pointsHigher arena score
HiDream-O1-Image1,135.627 arena points
Arena benchmark scores for GPT Image 1.5 and HiDream-O1-Image
BenchmarkGPT Image 1.5HiDream-O1-ImageSource
Text to Image Arena
1,313 EloHigher arena score
Rank 4, 95% confidence interval: ±10, 13,184 ratings
1,178 Elo
Rank 49, 95% confidence interval: ±10, 4,032 ratings
Artificial AnalysisRetrieved 2026-08-15
Image Editing Arena
1,252 EloHigher arena score
Rank 4, 95% confidence interval: ±7, 11,551 ratings
1,195 Elo
Rank 21, 95% confidence interval: ±8, 6,392 ratings
Artificial AnalysisRetrieved 2026-08-15
Arena Text to Image: 3D modeling
1,215.437 arena pointsHigher arena score
Rank 11, 95% confidence interval: ±6.83, 14,763 ratings
1,122.629 arena points
Rank 41, 95% confidence interval: ±10.3, 3,159 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Art
1,223.911 arena pointsHigher arena score
Rank 11, 95% confidence interval: ±6.08, 19,937 ratings
1,122.865 arena points
Rank 41, 95% confidence interval: ±8.57, 4,910 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Cartoon
1,243.08 arena pointsHigher arena score
Rank 10, 95% confidence interval: ±4.87, 55,661 ratings
1,122.842 arena points
Rank 38, 95% confidence interval: ±6.4, 13,113 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Commercial design
1,240.908 arena pointsHigher arena score
Rank 10, 95% confidence interval: ±4.72, 55,926 ratings
1,128.773 arena points
Rank 39, 95% confidence interval: ±6.2, 12,596 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Overall
1,238.658 arena pointsHigher arena score
Rank 11, 95% confidence interval: ±3.36, 142,427 ratings
1,118.314 arena points
Rank 40, 95% confidence interval: ±4.3, 34,179 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Photorealism
1,248.785 arena pointsHigher arena score
Rank 11, 95% confidence interval: ±4.83, 57,631 ratings
1,111.024 arena points
Rank 50, 95% confidence interval: ±6.31, 13,889 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Portraits
1,261.416 arena pointsHigher arena score
Rank 9, 95% confidence interval: ±5.95, 28,153 ratings
1,107.311 arena points
Rank 50, 95% confidence interval: ±7.76, 7,047 ratings
ArenaRetrieved 2026-08-16
Arena Text to Image: Text rendering
1,254.593 arena pointsHigher arena score
Rank 10, 95% confidence interval: ±4.98, 51,503 ratings
1,135.627 arena points
Rank 37, 95% confidence interval: ±6.45, 11,302 ratings
ArenaRetrieved 2026-08-16

Visual comparison

Sample images from documented runs

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 1.5, Character and detail
GPT Image 1.5
HiDream-O1-Image, Character and detail
HiDream-O1-Image
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.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 12:17 PM. Source
HiDream-O1-Image. Provider fal.ai, requested 1024x1024, n=1, seed=1735022440, estimated cost $0.010486, model ID fal-ai/hidream-o1-image, generated Aug 14, 2026, 1:53 PM. Source

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

Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

GPT Image 1.5, image SHA 256: 0dff52ccd39400ac66ac8870c9ea937512ff1474688e70118688f420c38c2296

GPT Image 1.5, request SHA 256: 5199631ac6ff07633dd2fb6ab61c918c26e1e02f37e6131828072233ac04527d

HiDream-O1-Image, image SHA 256: 9ac2cbe23ee6a63b0daacd665a40c3471c52c52fd6ad23e46d3027bb95f8c880

HiDream-O1-Image, request SHA 256: 5d005ee24926d68b7d2299b8ecbe4e14919f652761f6de2568a043f2a6258da0

Infographic

Numbers, labels, and visual organization

GPT Image 1.5, Infographic
GPT Image 1.5
HiDream-O1-Image, Infographic
HiDream-O1-Image
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.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 12:17 PM. Source
HiDream-O1-Image. Provider fal.ai, requested 1024x1024, n=1, seed=1456348218, estimated cost $0.010486, model ID fal-ai/hidream-o1-image, generated Aug 14, 2026, 1:53 PM. Source

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

Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

GPT Image 1.5, image SHA 256: 1c9ff59c32621c8b48b002dacb0ae66487262280c7c0a5b3d6456c81b248ebe9

GPT Image 1.5, request SHA 256: 7f1efc9531f1e6bed7d61a11c637add9fd892001aea2bb2781f8d89c79a2eb03

HiDream-O1-Image, image SHA 256: 258eece8b53e4df0c990b78dee2e02ec57569b1c823c3feff2ab54671240d66f

HiDream-O1-Image, request SHA 256: 8b8014fc63f520d73ff57d3d8df5eae880097383167d44918b963f2830d09940

Product photography

Materials, reflections, and fine details

GPT Image 1.5, Product photography
GPT Image 1.5
HiDream-O1-Image, Product photography
HiDream-O1-Image
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.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 12:16 PM. Source
HiDream-O1-Image. Provider fal.ai, requested 1024x1024, n=1, seed=124666889, estimated cost $0.010486, model ID fal-ai/hidream-o1-image, generated Aug 14, 2026, 1:53 PM. Source

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

Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

GPT Image 1.5, image SHA 256: 67cfa2f324447027ceb5f82e9446d40a1395b46ce425890a74606b4d97731cf6

GPT Image 1.5, request SHA 256: c850843a298631a4076c5d2686de8e9d7223534f2b8ca53505f437862718bef9

HiDream-O1-Image, image SHA 256: 5a9cd3c59556412e4de93a3ef5c4121ec12b6cc02730cad527619c2d8a889783

HiDream-O1-Image, request SHA 256: 21e2c14d1b6315c30134e1390f531349608855d4ef1a87527e6d0ba57b2974ca

Typography and layout

Legible text, hierarchy, and composition

GPT Image 1.5, Typography and layout
GPT Image 1.5
HiDream-O1-Image, Typography and layout
HiDream-O1-Image
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.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 1:59 PM. Source
HiDream-O1-Image. Provider fal.ai, requested 1024x1024, n=1, seed=2131088503, estimated cost $0.010486, model ID fal-ai/hidream-o1-image, generated Aug 14, 2026, 2:41 PM. Source

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

Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

GPT Image 1.5, image SHA 256: 6a4cec86850fd371b65274198e2bf630b3cf36a096f9fb953d4bfe17c3222ebe

GPT Image 1.5, request SHA 256: 9c3a396aecfcaae3f8a25edbe5c8c44d0d33199d7ba29efda864d2b0221c3250

HiDream-O1-Image, image SHA 256: 418a9b974b87b751ad2e4e98cdf6b8d7e2f8f352aed63d25be84c02377f310d1

HiDream-O1-Image, request SHA 256: 530872e813e988ba95025956a3743c6111120af963d90b8970a8bf3eced5547b

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.

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