IMAGE MODEL by ByteDance Seedream family

Seedream v4.5

ByteDance's production-standard image model — a major update over Seedream v4 with 30–40% faster generation, significantly improved text rendering for small and dense type, stronger subject consistency, and multi-image editing support with up to 4 references. Native resolution up to 4K, with support up to 8192×8192 for large-format work.

Max Resolution

Up to 8192×8192

Reference Images

Up to 4

Speed vs. v4

30–40% faster

Released

December 2025

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## The production standard in the Seedream family Seedream v4.5 is a significant upgrade over v4 — not a minor patch. Generation is 30–40% faster (8–14 seconds depending on resolution and complexity), text rendering is substantially improved for small and dense type (logos, menus, data tables), and multi-image editing supports up to 4 reference images with accurate subject identification and reference detail preservation. Where [Seedream v5 Lite](/ai-models/image/seedream-v5-lite) is optimized for speed and exploration, v4.5 is the right choice for the final 20–30% of a production workflow: the outputs that will actually ship to clients. A169f065cdfd11f0ba0900163e56377f~tplv D77oumduh0 Watermark Ai

A169f065cdfd11f0ba0900163e56377f~tplv D77oumduh0 Watermark Ai

## Capabilities Native 4K output with support up to 8192×8192 for large-format print, billboard, and ultra-high-resolution deliverables. Meaningful speed improvement at equivalent quality — more iterations per session without sacrificing the detail that v4 established. Firmer grasp on subjects across generation variations — facial features, lighting, and color tone are preserved more reliably across a session. ## Specifications | Feature | Details | | -------------------- | ----------------------------------------------------- | | **Architecture** | Diffusion Transformer (DiT) with high-compression VAE | | **Resolution** | Up to 8192×8192 (native 4K standard) | | **Reference images** | Up to 4 | | **Generation speed** | 8–14 seconds | | **Speed vs. v4** | 30–40% faster | | **Released** | December 3, 2025 | ## How to use Go to the **ImagineArt AI Image Generator**. From the model dropdown, choose **Seedream v4.5**. For text-in-image, include the exact text you want rendered. For multi-reference composites, describe subjects clearly. Upload up to 4 reference images for consistent multi-product or multi-character outputs. Click **Generate**. At 8–14 seconds, Seedream v4.5 is fast enough for efficient iteration at production quality.

## Prompting tips * **For dense text layouts** — Describe the full text hierarchy: headline, subheads, body copy, and any labels or callouts. v4.5 renders dense layouts accurately at production size. * **Use reference images for product consistency** — Attach your product photography references and describe the scenario. The model preserves product details (colors, textures, shapes) precisely. * **For large-format output** — Select custom resolution and push above 4K for billboard or large-format print. The high-compression VAE maintains quality at extreme sizes. ### Example prompts > A premium restaurant menu spread with "TASTING MENU" as the header, five courses listed with descriptions in clean serif type, cream background, elegant layout, no imagery. > Three luxury fragrance bottles (from references) arranged on a marble surface with fresh botanicals, editorial product photography, soft natural light. ## Compare models | Model | Speed | Resolution | Text rendering | References | Best for | | ----------------------------------------------------- | -------- | ---------- | ----------------- | ---------- | ---------------------------- | | **Seedream v4.5** | 8–14s | Up to 8K | Excellent (dense) | 14 | Production deliverables | | [Seedream v5 Lite](/ai-models/image/seedream-v5-lite) | 3–5s | Up to 4K | Good (titles) | — | Rapid iteration, exploration | | [Seedream v4](/ai-models/image/seedream-4) | Moderate | 4K | Good | Up to 6 | Commercial imagery | Use [Seedream v5 Lite](/ai-models/image/seedream-v5-lite) for the ideation phase — it's 2–4× faster at lower cost. Switch to Seedream v4.5 for the final production output, especially when you need dense text accuracy or 14-reference compositing.