Blend Multiple Character References for Consistent Portraits
Upload 2–6 portrait photos of the same person (different angles, lighting, expressions) and Seedream 4.5 Multi-Chart generates new images preserving their exact facial features across all outputs. The multi-reference blending engine locks facial geometry, skin tone, and eye color from all uploaded references simultaneously. Ideal for consistent character art across a series, avatar generation, and actor/model portfolio composites.
Combine Style + Subject References into a Single Image
Upload a content reference (e.g. a person or object) and one or more style reference images (lighting setup, color palette, artistic style) — Seedream 4.5 disentangles and recombines them. For example: upload a portrait as subject + a cinematic film still as lighting reference + a watercolor painting as style reference, and generate a new image applying all three. Output is up to 4K resolution in under 60 seconds.
Generate 4K Concept Art from Multi-Image Mood Boards
Creative directors and game artists upload 4–6 mood board images (architecture, color, character design, environment) and use the text prompt to specify composition. Seedream 4.5's multi-chart engine interprets cross-image style relationships and generates high-fidelity concept art at up to 4K (4096×4096). 4× faster inference than Seedream 4.0, completing in under 60 seconds on MyShell's GPU cluster.
Why Artists Choose Seedream 4.5 Multi-Chart on MyShell
ByteDance Seedream 4.5: 4K Output, 4× Faster Than Seedream 4.0
Seedream 4.5 (ByteDance, 2025) delivers up to 4K (4096×4096) resolution output at 4× the inference speed of Seedream 4.0. The model uses a unified multi-reference diffusion architecture that preserves facial features, lighting, color tone, and object identity across up to six simultaneous reference inputs. Independent benchmarks show character consistency (facial SSIM) improvement of 18% over Seedream 4.0.
Up to 6 Reference Images + Text Prompt in One Generation
Most text-to-image tools accept only 1–2 reference images (DALL·E 3: 1 style image; Midjourney: 2 images max via --sref). Seedream 4.5 Multi-Chart accepts up to 6 reference images simultaneously, enabling complex multi-style blending workflows that aren't possible on standard tools. Output resolution: up to 4K in under 60 seconds.
Free on MyShell: No Watermark, No Subscription
Seedream 4.5 API access through ByteDance's commercial API costs $0.08–0.20 per image at 4K resolution. MyShell offers free Seedream 4.5 Multi-Chart access with no watermark, no subscription, and no daily cap for standard use. Monetizes via optional energy packs for power users.
How to Use Seedream 4.5 Multi-Chart on MyShell
Step 1: Upload Up to 6 Reference Images
Click the upload area and add up to 6 JPG, PNG, or WebP reference images (max 10 MB each). Each image can be a character reference, lighting reference, style reference, or subject image. The model accepts all image types simultaneously — no need to categorize them.
Step 2: Write a Text Prompt Describing the Output
Describe what you want generated: subject, scene, composition, and any specific elements to emphasize from the references. For example: 'Portrait of a woman, cinematic lighting, watercolor style, bokeh background'. The text prompt guides how the model weighs and blends each reference image.
Step 3: Download 4K AI Image in 20–25 Seconds
Seedream 4.5 generates a high-fidelity image at up to 4K (4096×4096) in under 60 seconds. Download as PNG (lossless) with no watermark. Run multiple generations with the same references to explore composition variations.