Seedream 4 overview: fast generation + editing

What is Seedream 4?

Seedream is ByteDance’s image model family. Seedream 4 focuses on fast generation, reliable editing controls, and multi‑reference workflows. The model weights are not open‑source.

Core strengths

Seedream 4 is often used when teams need fast iteration and strong controllability:

• Unified generation + editing in one model
• High‑resolution output with fast inference
• Batch‑friendly workflows
• Good instruction following for layout‑heavy prompts

Typical use cases

• Product image variants
• Environment and background replacement
• Character consistency across scenes
• Storyboard or sequential visuals
• Educational diagrams and infographics

Seedream 4 vs Nano Banana

Both models are capable, but they excel at different tasks:

If typography is critical, teams often test both and choose the one that renders text most clearly.

How it behaves in practice

Seedream 4 keeps structure stable when you provide clear constraints, especially for layouts like posters, catalogs, or multi‑image grids. It’s also quick to iterate, which makes it useful during exploration phases.

Access on img2img.online

Seedream 4 is available directly from the model list. It’s an image‑only model (no video output). Credit usage is similar to Nano Banana for standard sizes.

Best‑practice tips

• Keep prompts short and explicit
• Use one strong reference image
• Specify layout constraints (“left aligned”, “top margin for headline”)
• Generate in small batches and iterate

Commercial use & watermarks

Commercial use is allowed if you have rights to the input materials and follow platform rules. Outputs include SynthID invisible watermarking, and visible watermark rules depend on the platform.

Summary

Seedream 4 is a fast, controllable image model for teams that need consistent results and rapid iteration. If your workflow depends on layout stability or batch processing, it’s a strong option to test alongside Nano Banana.