---
title: "FLUX.2 Klein vs Seedream 4.0: Blind Test Results and Price"
canonical_url: "https://workroom.everypixel.com/models/compare/flux-2-klein-vs-seedream-4-0"
updated: 2026-09-14
---

# FLUX.2 Klein vs Seedream 4.0

Seedream 4.0 (57) scores higher than FLUX.2 Klein (24) on the photo-anchored quality scale, where a real photograph is 100. Never tested head-to-head; ranked from separate sessions on the same scale.

Both scores come from blind pairwise tests on the same 48 scenes between 21 August and 11 September 2026: 576 pairs and 1,727 judgements, each pair judged 3 times.

## Overview

| | FLUX.2 Klein | Seedream 4.0 |
|---|---|---|
| Vendor | Black Forest Labs | ByteDance |
| Released | Jan 15, 2026 | Sep 9, 2025 |
| License | FLUX Non-Commercial | Proprietary |
| Input modalities | text, image | text, image |
| Output modalities | image | image |
| Pricing | $0.012 / img | $0.03 / img |

## Scores

| Model | Score | 95% interval | Rank | Results |
|---|---|---|---|---|
| FLUX.2 Klein | 23.9 | fixed rung of the scale | #5 | https://workroom.everypixel.com/models/flux-2-klein |
| Seedream 4.0 | 56.9 | 44–70 | #4 | https://workroom.everypixel.com/models/seedream-4-0 |

A real photograph is 100. A score above 100 is the scale's technical ceiling and does not mean parity.

## By use case

| Use case | FLUX.2 Klein | Seedream 4.0 |
|---|---|---|
| Fashion and beauty | 43 | 80 |
| Food and beverage | −41 | 57 |
| Interior | 64 | 83 |
| Layout and typography | −21 | −14 |
| People and lifestyle | −56 | 16 |
| Product and e-commerce | 49 | 67 |
| Social marketing | 47 | 79 |
| Street and architecture | 34 | 53 |

*Category positions come from 6 scenes each — a tendency, not a measurement. A real photograph is 100 on every ruler.*

## Links

- Study: https://research.everypixel.com/anchor-ladder/
- Votes (CSV, 106 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/anchor-comparison-v3/votes.csv
- Results (JSON, 5 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/anchor-comparison-v3/results.json
- Scenes and prompts (CSV, 30 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/anchor-comparison-v3/scenes.csv
- README (MD, 2 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/anchor-comparison-v3/README.md
- Images (ZIP, 128 MB, All rights reserved — verification only): https://wr.everypixel.com/ghost-research/geo-benchmarks/datasets/anchor-comparison-v3-images.zip
- Votes (CSV, 102 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/seedream-4-0-ladder/votes.csv
- Results (JSON, 4 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/seedream-4-0-ladder/results.json
- Scenes and prompts (CSV, 44 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/seedream-4-0-ladder/scenes.csv
- README (MD, 2 KB, CC BY 4.0): https://workroom.everypixel.com/datasets/seedream-4-0-ladder/README.md
- Images (ZIP, 186 MB, All rights reserved — verification only): https://wr.everypixel.com/ghost-research/geo-benchmarks/datasets/seedream-4-0-evaluation-images.zip
- All scenes: https://workroom.everypixel.com/models/flux-2-klein/dataset

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HTML version: https://workroom.everypixel.com/models/compare/flux-2-klein-vs-seedream-4-0
Last modified: 2026-09-14