Model guide · ByteDance
What is Seedream 4.5?
Seedream 4.5 is an image model from ByteDance. In practical terms, the Seedream family is built around controlled image creation, reference-led editing, and structured visual composition. Text-to-image and reference image editing with 2K or 4K output.
On I2V, Seedream 4.5 supports Text to image, image to image. Available output options include 2K, 4K, with aspect-ratio behavior shown as 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2. The same public model ID and credit balance work in Studio and through the task API.
What Seedream 4.5 can do
Input workflows
Seedream 4.5 exposes Text to image, image to image. The model-locked Studio form only shows controls that apply to this model.
Output control
Configured output resolution: 2K, 4K. Supported aspect-ratio behavior: 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2.
Reference-led creation
Use up to 14 reference images where the selected mode accepts visual input.
Best uses for Seedream 4.5
Information-rich graphics
Develop infographics, educational visuals, comparison layouts, and other compositions that combine several visual ideas.
Product and brand exploration
Test compositions, backgrounds, materials, lighting, and visual directions before committing to production.
Reference-guided iteration
Use existing images when the subject, layout, style, or product identity needs to carry into a new result.
When to choose Seedream 4.5
Choose this model when composition control and reference-based iteration matter more than producing the fastest first draft. I2V shows the exact valid configurations before you run the task, so model selection can be based on both capability and cost.
Seedream 4.5 FAQ
What is Seedream 4.5?
Seedream 4.5 is a ByteDance image model available in I2V Studio and through the I2V task API. It supports Text to image, image to image.
What inputs and outputs does Seedream 4.5 support?
Seedream 4.5 supports Text to image, image to image. Output resolution is 2K, 4K, with aspect-ratio behavior listed as 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2. The live form is restricted to valid options for this model.
How much does Seedream 4.5 cost on I2V?
Seedream 4.5 starts at 4 credits ($0.10 using the current Mini Pack reference) for Text to image, 2K. The pricing table lists other valid configurations.
Can I use Seedream 4.5 through an API?
Yes. Use the public model ID seedream-4.5 with POST /api/v1/jobs/createTask, then poll GET /api/v1/jobs/recordInfo until the task succeeds or fails. Studio and API share one credit balance.