FLUX.2 Maxvs.Seedream 4.5
Which one is better?
In our own test, FLUX.2 Max leads. Seedream 4.5 has no arena rating yet. Seedream 4.5 has no API price.
Test images
Same task, the first image of each. The task with the biggest difference is preselected.
Result for “Character and detail”:FLUX.2 Max slightly ahead
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
FLUX.2 Max: together, 1024x1024, n=1, seed=provider random, steps=50, generated Aug 14, 2026, 12:23 PM. Source
Seedream 4.5: fal, requested native 2048x2048 square, n=1, seed=607017308, estimated cost $0.040000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:50 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6
FLUX.2 Max image SHA 256: a0a2cef301582c47a8dca69ccd1c52212c37ca6c058d7185a880a7856713cd9e
Seedream 4.5 image SHA 256: 614d5b810be9f7cc54c999fb930e5bb1a7a5b58f7211a3b71aa92e83a360cf78
Infographic
FLUX.2 Max: together, 1024x1024, n=1, seed=provider random, steps=50, generated Aug 14, 2026, 12:24 PM. Source
Seedream 4.5: fal, requested native 2048x2048 square, n=1, seed=467481828, estimated cost $0.040000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:51 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f
FLUX.2 Max image SHA 256: 9321457355d5a9630073632fb6441bf388da1c4ee8e5d58e58cd0603ce756a09
Seedream 4.5 image SHA 256: ec1e2be1080670edf050cff00a094ff471c1b480a11a3922cf8c25f0ef0f6a5e
Product photography
FLUX.2 Max: together, 1024x1024, n=1, seed=provider random, steps=50, generated Aug 14, 2026, 12:23 PM. Source
Seedream 4.5: fal, requested native 2048x2048 square, n=1, seed=1880157282, estimated cost $0.040000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:50 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3
FLUX.2 Max image SHA 256: dd6ad8d1ec45154727d9ddf573ef10da5225899820055318d23bcd4e5a1e930c
Seedream 4.5 image SHA 256: 48a36dede8c680fa8e2231ac33a95b1417dcded96ad753c98218cc78ed96a65b
Typography and layout
FLUX.2 Max: together, 1024x1024, n=1, seed=provider random, steps=50, generated Aug 14, 2026, 2:00 PM. Source
Seedream 4.5: fal, requested native 2048x2048 square, n=1, seed=775629027, estimated cost $0.040000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:50 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419
FLUX.2 Max image SHA 256: 3eb2daf01c749ee25d86c2e4f55d6d3d81cfb4590eb0343f9a4bb3d0a70d19bc
Seedream 4.5 image SHA 256: 62d4e5b0b3c9ca5a55952dc2c5aca878ed687c76f302ad632136bd3e6bee3872
The numbers at a glance
FLUX.2 Max
Rank 15 of 21
Seedream 4.5
not in the arena
FLUX.2 Max
Rank 27 of 108
Seedream 4.5
Rank 64 of 108
FLUX.2 Max
fairly expensive
Seedream 4.5
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.
FLUX.2 Max
- Subscription
- No Black Forest Labs subscription includes this model. Through other providers from €6.83 a month (Poe Basic, with limited points). 28 plans in Germany.
- Via API
- $0.07 per image, 100 images $7.
Seedream 4.5
- Subscription
- No ByteDance / Volcengine subscription includes this model. Through other providers from ≈ €6.36 a month (ElevenLabs Starter, with limited credits). 39 plans in Germany.
- Via API
- No API price known. Access: API, Web app.
- Weights
- unknown.
Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.
Arena rating (LMArena) from Nov 6, 2026 · GraduallyBench from Nov 3, 2026 · API prices from Nov 6, 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 | FLUX.2 Max | Seedream 4.5 |
|---|---|---|
| Ratings | ||
| Arena ratingfrom votes by users, higher is better | 1,161 | n/a |
| Arena rank | Rank 15 of 21 | n/a |
| Arena votesmore votes, a safer rating | 123,131 | n/a |
| GraduallyBenchour own rating, 0 to 100 | 69 | 48 |
| GraduallyBench by task | ||
| Typography and layoutLegible text, hierarchy, and composition | 92 | 84 |
| Product photographyMaterials, reflections, and fine details | 59 | 44 |
| Character and detailAnatomy, clothing, and spatial consistency | 70 | 37 |
| InfographicNumbers, labels, and visual organization | 54 | 27 |
| API price | ||
| Per imagelower is better | $0.07 | n/a |
| 100 images | $7 | n/a |
| Profile | ||
| Released | December 2025 | n/a |
| Weightsopen means: runs locally | proprietary | unknown |
| Lifecycle | no notice | Still-listed T2I/I2I model ID; Ark marks it as pending shutdown without giving a date in the reviewed source |
| Access | API, Web app | API, Web app |
| Parameters | not published | not published |
| Largest output | 4 Megapixel | not consistently published |
| Plans in Germanynaming exactly this model | 28 | 39 |
API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.
Sources: FLUX.2 Max model source (verified Sep 24, 2026) · Seedream 4.5 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 FLUX.2 Max and Seedream 4.5 from the same arena and category. Older model versions are not used as substitutes.
More comparisons
Compare FLUX.2 Max and Seedream 4.5 with the models people compare them with most often.