Seedream 5.0 Flashvs.ChatGPT Image Latest (API-Alias)

Which one is better?

In our own test, Seedream 5.0 Flash leads. Neither is in the arena. Neither has an API price.

Test images

Same task, the first image of each. The task with the biggest difference is preselected.

Seedream 5.0 Flash: Character and detail, first image from the fixed test run — Seedream 5.0 Flash75 out of 100

ChatGPT Image Latest (API-Alias): Character and detail, first image from the fixed test run — ChatGPT Image Latest (API-Alias)57 out of 100

Result for “Character and detail”:Seedream 5.0 Flash slightly ahead

Prompt given to both modelsCreate 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.

What the rating looks at: Anatomy, clothing, and spatial consistency.

“Ahead”: better in all three rating rounds. “Slightly ahead”: a higher value, but not in every round.

Test protocol of the images

Each test attempt uses the same archived prompt and one request. The first output of that attempt counts. Repeats after technical test failures are disclosed for the affected images. Files are normalized to 1,024 × 1,024 pixels without cropping. Provider resolution, randomness, quality tier and prompt processing can still differ. The images are a practical visual test, not a reconstruction of the arena configuration.

Character and detail

Seedream 5.0 Flash: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.018000, generated Nov 1, 2026, 8:29 PM. Source

ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:07 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

Seedream 5.0 Flash image SHA 256: ffb32d701168dd57095e39252aba67b191c008c7b9393ae22acf1e1b1caba9b9

ChatGPT Image Latest (API-Alias) image SHA 256: 138ee96636b4fae17774b98bc6253f8dab595f4763ab90dd069ac6883c3f392e

Infographic

Seedream 5.0 Flash: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.018000, generated Nov 1, 2026, 8:30 PM. Source

ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:07 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

Seedream 5.0 Flash image SHA 256: 0758d1251491a26b5d7736c16597318e5807a92c30db03d9431d8584652aae3e

ChatGPT Image Latest (API-Alias) image SHA 256: 3ed35c9539f9e2df404a219548c778a92ac0ee3e39a9a1c7f0bab3ee179165bb

Product photography

Seedream 5.0 Flash: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.018000, generated Nov 1, 2026, 8:29 PM. Source

ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:06 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

Seedream 5.0 Flash image SHA 256: 3ea7343b12d253b6b0e090054c1e494f5a005632cc263a9b2df4d866ba6b02d0

ChatGPT Image Latest (API-Alias) image SHA 256: c500c50a82c3c34b0caefcf73f08258fae3964682dafbee4737ac45855d14ee6

Typography and layout

Seedream 5.0 Flash: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.018000, generated Nov 1, 2026, 8:29 PM. Source

ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, first output of one technical repeat after a local archive failure; two total submissions; the original attempt output was not retained, generated Nov 2, 2026, 3:06 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

Seedream 5.0 Flash image SHA 256: b9739c9a9ab67183f268f41b7ff62a9151cef9d0c8c168eba332a2b6af057426

ChatGPT Image Latest (API-Alias) image SHA 256: 503ffd644f74423e8fdf617a2d8984f43f68fd87e287e4a3a94cec89c9666288

The numbers at a glance

Arena ratingfrom votes by users · higher is better

n/a

Seedream 5.0 Flash

not in the arena

n/a

ChatGPT Image Latest (API-Alias)

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better

Seedream 5.0 Flash

Rank 3 of 108

ChatGPT Image Latest (API-Alias)

Rank 25 of 108

Price per imagedollars through the API · lower is better

n/a

Seedream 5.0 Flash

no API price

n/a

ChatGPT Image Latest (API-Alias)

no API price

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

Seedream 5.0 Flash

Subscription: No ByteDance subscription includes this model. Through other providers from €6.83 a month (Poe Basic, with limited points). 18 plans in Germany.
Via API: No API price known. Access: API.
Weights: unknown.

ChatGPT Image Latest (API-Alias)

Subscription: n/a No plan in Germany names exactly this model.
Via API: No API price known. Access: API.
Weights: unknown.

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

GraduallyBench from Nov 3, 2026 · Subscription database from Sep 29, 2026 (38 days old)

All data side by side

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

Kennzahl	Seedream 5.0 Flash	ChatGPT Image Latest (API-Alias)
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
GraduallyBenchour own rating, 0 to 100	79	69
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	77	68
Product photographyMaterials, reflections, and fine details	77	69
Character and detailAnatomy, clothing, and spatial consistency	75	57
InfographicNumbers, labels, and visual organization	86	83
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	unknown	unknown
Lifecycle	no notice	Deprecated, non-reproducible rolling alias; API shutdown announced for December 1, 2026
Access	API	API
Parameters	not published	not published
Largest output	not consistently published	not consistently published
Plans in Germanynaming exactly this model	18	n/a

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

Sources: Seedream 5.0 Flash model source (verified Nov 1, 2026) · ChatGPT Image Latest (API-Alias) model source, status source (verified Nov 1, 2026)

Arena ratings by category

From blind votes on LMArena. “Ahead” means the lead is clear.

No shared arena score in the stored snapshot

The stored benchmark database contains no measurement for Seedream 5.0 Flash and ChatGPT Image Latest (API-Alias) from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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