Google Gemini Nano Banana AI vs Seedream 4.0: ByteDance, the Chinese company that owns TikTok, has released a new image-making tool called Seedream 4.0. The company says it works better than Google DeepMind’s popular tool, Nano Banana (officially Gemini 2.5 Flash Image). Seedream 4.0, created by ByteDance’s Seed team, can make images from text and also edit pictures. It is meant to compete with DeepMind’s US-made image editor, which has been praised for being accurate and consistent since it launched in late August.
What is Seedream 4.0? Why is it special?
Google Gemini Nano Banana AI vs Seedream 4.0: Seedream 4.0 is a new image creation model made by ByteDance’s Seed research team and released in August 2025. It combines both text-to-image generation and image editing in one system. This allows it to handle difficult tasks like responding to knowledge-based prompts, keeping details consistent, and making precise edits such as removing objects, changing backgrounds, applying styles, and adding text. Built on an advanced Mixture of Experts (MoE) framework, it can produce high-quality images up to 4K resolution. It also works very fast, creating 2K images in about 1.8 seconds, which is much quicker than Seedream 3.0, while still maintaining good accuracy, looks, and layout.
Google Gemini Nano Banana AI vs Seedream 4.0
According to news reports, Seedream 4.0 keeps the good features of version 3.0 but has a new design that makes it create images ten times faster. People who have used it say the editing results are good and the images match the text prompts accurately.
However, it is hard to verify ByteDance’s claims. Tools like ChatGPT and Nano Banana are easier to trust because millions of people have used them. Chinese AI models like DeepSeek have been tested in other countries, but Seedream 4.0 is mostly limited to China and some local apps.
Whereas, Nano Banana creates more beautiful and realistic results, especially for photorealistic or 3D-style edits, but it sometimes loses accuracy when making repeated changes.
Both models can edit through normal language, but Seedream can handle multiple reference images at once, making it better for combining many pictures. Nano Banana’s chat-style interface feels easier for quick changes like adjusting a pose, though it can distort faces or miss small details.
Using AI to create images also raises privacy concerns. Chinese AI tools could face issues if they are used in Western countries, especially the US. Nano Banana comes from the US but is very popular in India. It is also widely available, even through apps like WhatsApp via the Perplexity AI bot.
