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  1. Home/
  2. Compare/
  3. FLUX.3 Image vs Seedream 4
Updated Oct 2026

FLUX.3 Image vs Seedream 4

FLUX.3 Image is the newer model, released after Seedream 4.

Hyperrealistic Portrait

One prompt, one photorealistic portrait. Skin, eyes, light.

Loading the build
FLUX.3 Image
Loading the build
Seedream 4

Which answer wins?

Price and specs

FLUX.3 Image and Seedream 4 compared across 17 shared prompts
SpecFLUX.3 ImageSeedream 4
Free API (OpenRouter)No—
ReleasedOct 2026Nov 2025
Where to run it1 host
FLUX.3 Image1 host
HostInOutContextUptime
  • BBlack Forest Labs–not listed in·–not listed out·47k·99.5% up
Seedream 4

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between FLUX.3 Image and Seedream 4?

FLUX.3 Image is developed by Black Forest Labs while Seedream 4 is developed by ByteDance. You can compare their actual outputs across 17 challenges on Rival to see how they differ in practice.

Which is better, FLUX.3 Image or Seedream 4?

It depends on your use case. FLUX.3 Image and Seedream 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 17 challenges so you can judge which fits your needs best.

How can I compare FLUX.3 Image and Seedream 4 on Rival?

This page shows a side-by-side comparison of FLUX.3 Image and Seedream 4 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

More comparisons

Against the newest arrivals

  • FLUX.3 Image vs Hy Image 3.5 PreviewLanded Oct 2026
  • Seedream 4 vs Nano Banana 2.1Landed Oct 2026
  • FLUX.3 Image vs Recraft V4.1 FlashLanded Sep 2026
  • Seedream 4 vs GPT Image 2.5 SunburstLanded Sep 2026
  • FLUX.3 Image vs GPT Image 2.5 FlareLanded Sep 2026
  • Seedream 4 vs Nano Banana 2 LiteLanded Jun 2026
  • FLUX.3 Image vs Riverflow V2.5 FastLanded Jun 2026
  • Seedream 4 vs Riverflow V2.5 ProLanded Jun 2026

Same lab, same size, long tail

  • FLUX.3 Image vs FLUX 2 MaxVersion compare
  • FLUX.3 Image vs FLUX Kontext MaxSame lab
  • Seedream 4 vs Hy Image 3.5 PreviewSame size
  • Seedream 4 vs Recraft V4.1 FlashSame size
  • FLUX.3 Image vs Luma PhotonSame size
  • FLUX.3 Image vs Luma Photon FlashSame size
  • FLUX.3 Image vs Playground v2.5 (Aesthetic)Same size
  • FLUX.3 Image vs Qwen ImageSame size

Model pages

  • FLUX.3 Image19 outputs, specs and price
  • Seedream 417 outputs, specs and price
Workshop · 150 skills

Build your own version.

Editable skills and working examples for your agent.

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Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare models
  • All models
  • Image comparison
  • Audio comparison
  • Image generation
  • Best AI for...
  • Arena
  • API pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model updates
  • Provider status
  • AI creators

Connect

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  • Advertise
  • Partnerships
  • Privacy policy
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