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TikTok’s parent company, ByteDance, launched Seedream 4.0, a powerful AI model built to rival Google DeepMind’s Nano Banana (also known as Gemini 2.5 Flash Image). The company claims that Seedream 4.0 improves image generation, prompt editing, and style consistency. These changes show ByteDance’s growth in today’s competitive creative AI arena.
Seedream 4.0 comes with text-to-image generation, composite editing from multiple input images, and consistent style across sequences. ByteDance’s internal benchmark, MagicBench, reportedly shows Seedream 4.0 surpassing Nano Banana in prompt adherence, alignment to user instructions, visual aesthetics, and reliability.
Performance rises with speed and resolution. Seedream 4.0 produces 2K-resolution images in under two seconds. It supports up to six reference images to guide style, character design, or branding. Creatives can build multi-image outputs with consistent visual themes. These features make Seedream 4.0 suited for marketers, designers, storytellers, and content creators.
Editing commands in Seedream 4.0 respond well. Users can add, remove, replace, or modify elements via clear natural-language prompts. Style transfers and composite edits with multiple reference images appear sharper. Image sequences maintain the same characters and style across panels, storyboards, or product design visuals.
In pricing and access, Seedream 4.0 aims for competitiveness. ByteDance set the cost at roughly US$0.03 per image, which aligns with or undercuts some pricing of Nano Banana in similar contexts. Access occurs via ByteDance-owned platforms in China (Jimeng, Doubao) and enterprise clients through its Volcano Engine cloud service.
Nano Banana gained popularity for its precise editing, social media appeal, and ease of use for casual users. Seedream 4.0 pushes forward with stronger style flexibility, batch generation, reference-based consistency, and professional workflow support. The rivalry could redefine expectations from generative image tools.
Seedream 4.0 demands well-crafted prompts. ByteDance recommends that prompts clearly describe the environment, subject, style, and application scenario. If text must appear in an image, quotation marks help.
AI image generation aids style and character matching. If there are multiple pictures, the prompt must specify which particular input contributes to what factor. These guidelines help Seedream follow user intent and commands.
Seedream 4.0 is emerging as a strong competitor that could challenge Nano Banana. If benchmark results are confirmed through independent testing, this AI model is likely to attract generative image tools thanks to its versatility and consistent output.
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