Flux Pro vs Seedream 4.5
Black Forest Labs' flagship vs ByteDance's challenger — mid-tier image generation compared.
Flux Pro from Black Forest Labs and Seedream 4.5 from ByteDance represent two different approaches to AI image generation. Professional-grade v1.1 with sharp details, accurate colors, and reliable output. On the other side, byteDance's flagship model with stunning aesthetics and complex scene understanding.
At 10 credits, Seedream 4.5 costs 5 credits less than Flux Pro (15 credits). The question is whether the extra cost of Flux Pro translates into meaningfully better results for your use case. For artistic scenes, complex compositions, high-resolution output, Seedream 4.5 is hard to beat at its price point. But if you need reliable production work, versatile use cases, Flux Pro may justify the premium.
Updated March 2026
Seedream 4.5 (10 credits) offers better value for everyday use, especially for artistic scenes. Flux Pro (15 credits) is worth the premium when you need reliable production work. Both are available on Melies — try each with a test prompt to see which fits your style.
Flux Pro vs Seedream 4.5: Visual Output
Both generated with the same prompt and seed 42. Click to view full size.
Flux Pro
Seedream 4.5Flux Pro vs Seedream 4.5: How They Compare
| Flux Pro | Seedream 4.5 | |
|---|---|---|
| Provider | Black Forest Labs | ByteDance |
| Released | Oct 2024 | Dec 2025 |
| Cost | 15 | 10 |
| Speed | Medium | Medium |
| Reference images | Up to 10 | |
| Editing |
Flux Pro vs Seedream 4.5: Cost Comparison
Seedream 4.5 is 33% cheaper than Flux Pro. Here's how credits add up at scale.
| Volume | Flux Pro | Seedream 4.5 |
|---|---|---|
| 10 images | 150 | 100 |
| 50 images | 750 | 500 |
| 100 images | 1,500 | 1,000 |
Strengths & Weaknesses
Flux Pro
- + Reliable production work
- + Inference steps control (1–50)
- + Guidance scale 1–20
- + Prompt enhancement
- + Safety tolerance 1–6
- - More expensive (15 vs 10 credits)
- - No built-in editing
- - No reference image support
Seedream 4.5
- + More affordable (10 vs 15 credits)
- + Artistic scenes
- + Supports 10 reference images
- + Built-in image editing
- + More resolution options
- - Higher price point relative to speed tier
Flux Pro vs Seedream 4.5: Which to Pick?
On a tight budget
At 10 credits per image, Seedream 4.5 gives you more generations for your plan. Good enough quality for most everyday use.
Maximum quality matters
Flux Pro is worth the extra credits when the output needs to be perfect — portfolio pieces, client work, or final deliverables.
Character or style consistency
Seedream 4.5 supports 10 reference images to keep subjects, styles, and characters consistent across generations.
Editing existing images
Seedream 4.5's built-in editing lets you refine and modify images with prompt-driven changes instead of starting from scratch.
Flux Pro vs Seedream 4.5: FAQ
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