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Head-to-head comparison

Reve 2.1 vs. HiDream-O1-Image-1.5

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.

1

shared result series

4

shared sample prompts

2026-08-15

latest arena retrieval

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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 Reve 2.1 and HiDream-O1-Image-1.5
AttributeReve 2.1HiDream-O1-Image-1.5
ProviderReveHiDream
ReleasedJuly 2026June 2026
AccessAPI, Web appAPI, Web app, local
LifecycleNo separate lifecycle noticeNo separate lifecycle notice
WeightsProprietaryOpen weights
ParametersNot published8 billion
Maximum output4K2,048 × 2,048 pixels
Arena configurationNo separate configuration namedNo separate configuration named
Text-to-image price$200 per 1,000 images$80 per 1,000 images
Editing price$200 per 1,000 imagesNo arena entry
Technical sourceModel sourceVerified 2026-08-15Model sourceVerified 2026-08-15
Reve 2.1HiDream-O1-Image-1.5
Text to Image ArenaUSD per 1,000 images at 1,024 × 1,024 pixels
Reve 2.1$200
HiDream-O1-Image-1.5$80Lower 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.

1 shared result series
Reve 2.1HiDream-O1-Image-1.5
Text to Image ArenaBlind preference from the same prompt, higher is better
Reve 2.11,326 EloHigher arena score
HiDream-O1-Image-1.51,228 Elo
Arena benchmark scores for Reve 2.1 and HiDream-O1-Image-1.5
BenchmarkReve 2.1HiDream-O1-Image-1.5Source
Text to Image Arena
1,326 EloHigher arena score
Rank 2, 95% confidence interval: ±9, 15,066 ratings
1,228 Elo
Rank 13, 95% confidence interval: ±9, 11,862 ratings
Artificial AnalysisRetrieved 2026-08-15

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

Reve 2.1, Character and detail
Reve 2.1
HiDream-O1-Image-1.5, Character and detail
HiDream-O1-Image-1.5
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.

Reve 2.1. Provider Manual import, Official Reve web app; Reve 2.1; chat creation; one request; 1:1 requested in prompt; first of two results; free plan; 2026-08-14; https://app.reve.com/model, source 4096x4096, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 14, 2026, 4:23 PM. Source
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

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

Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

Reve 2.1, image SHA 256: 29e9f7f38ed5c63dcfaab671a49fb9f4e9f82cd24b99134b87e1c22442822126

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

Infographic

Numbers, labels, and visual organization

Reve 2.1, Infographic
Reve 2.1
HiDream-O1-Image-1.5, Infographic
HiDream-O1-Image-1.5
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.

Reve 2.1. Provider Manual import, Official Reve web app; Reve 2.1; chat creation; one request; 1:1 requested in prompt; first of two results; free plan; 2026-08-14; https://app.reve.com/model, source 4096x4096, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 14, 2026, 4:23 PM. Source
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

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

Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

Reve 2.1, image SHA 256: 30d157e85d75eb2ca1f71152d27f26d378ad8ea49b899d5f350ae0cda4e2bc59

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

Product photography

Materials, reflections, and fine details

Reve 2.1, Product photography
Reve 2.1
HiDream-O1-Image-1.5, Product photography
HiDream-O1-Image-1.5
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.

Reve 2.1. Provider Manual import, Official Reve web app; Reve 2.1; chat creation; one request; 1:1 requested in prompt; first of two results; free plan; 2026-08-14; https://app.reve.com/model, source 4096x4096, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 14, 2026, 4:23 PM. Source
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

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

Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

Reve 2.1, image SHA 256: 1f91c3cb481151fb5165194b4edea2a46e786ca80e4ec3bdd888e3ba0016c510

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

Typography and layout

Legible text, hierarchy, and composition

Reve 2.1, Typography and layout
Reve 2.1
HiDream-O1-Image-1.5, Typography and layout
HiDream-O1-Image-1.5
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.

Reve 2.1. Provider Manual import, Official Reve web app; Reve 2.1; chat creation; one request; 1:1 requested in prompt; first of two results; free plan; 2026-08-14; https://app.reve.com/model, source 4096x4096, stored 1024x1024 (Lanczos3 downscale), model ID manual export, generated Aug 14, 2026, 4:23 PM. Source
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

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

Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

Reve 2.1, image SHA 256: 84bcd1680fd0ae861ec66c21ab8f4cd79738bd093eb87ffe7283d9842c37cb1d

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

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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