Nano Banana 2 模型指南
Nano Banana 2 的实用指南，覆盖 Gemini 3.1 Flash Image Preview 在 1K、2K、4K 和大型参考图流程里的用法。
Nano Banana 2 是 GPT Image Hub 里的平衡型 Gemini 选择。它支持 1K、2K、4K，并允许最多 14 张参考图；当 Nano Banana 太轻、Nano Banana Pro 又过于重时，优先选它。
视觉示例
视觉示例
A polished, bright environment suitable for travel or SaaS campaigns.
Isometric travel scene
A polished, bright environment suitable for travel or SaaS campaigns.
2K isometric pool scene, turquoise water, tiny lounge chairs, no text.Brand board output
Four product lifestyle concepts aligned to one reference system.
Use references as a brand board; keep citrus palette and soft shadows.Resolution ladder
A clean path from draft to review to final export.
Generate 1K preview, 2K review, then 4K final campaign hero.适合场景
- Campaign concept sets, UI mockup imagery, creator thumbnails, and product lifestyle scenes.
- Reference-heavy edits where 3 input images are not enough.
- Draft-to-final workflows where the same prompt needs 1K previews and 4K exports.
- Gemini-centered prompt experiments that need more detail than Nano Banana.
需要注意
- Tasks that need the strongest Gemini reasoning and text rendering; use Nano Banana Pro for that.
- Single quick drafts where Nano Banana is enough.
- OpenAI-specific workflows that require GPT Image 2 behavior or many non-Gemini ratios.
核心优势
Balanced model for higher-quality Gemini image generation without jumping straight to the Pro image model.
Supports 1K, 2K, and 4K tiers in GPT Image Hub.
Allows up to 14 reference images, enough for style boards, product angle sets, and visual direction packs.
Good fit for repeatable prompt templates that need a faster production loop.
使用场景
平衡型生产草稿
适合 1K 预览、2K 审核和 4K 交付的中间路线。
参考图丰富的场景
使用更大的视觉参考板，但不必直接上 Pro。
模板化生产
同一提示词结构可复用于不同产品、活动和类别。
推荐工作流
1K 预览
快速测试布局和活动方向。
2K 审核
检查细节、风格一致性和视觉层级。
4K 交付
当方向确认后再生成最终大图。
提示词写法
- Use explicit output intent: concept draft, final hero, edit, style transfer, or variant set.
- Separate reference-image roles: subject reference, style reference, material reference, layout reference.
- Ask for consistent camera and lighting when generating several assets for the same campaign.
- Use 2K as the review tier when 1K hides too much detail but 4K is not yet needed.
可复制提示词
Create a 2K isometric pool scene for a travel booking app, bright ceramic tiles, turquoise water, tiny lounge chairs, clean ad-ready composition, no text.
Use the references as a brand board. Generate four matching product lifestyle concepts for a reusable bottle, citrus palette, morning kitchen counter, consistent soft shadows.
Generate a 4K landing page hero visual for an AI prompt library, tiled prompt cards floating around a central image canvas, polished SaaS style, dark background, orange accent.
视觉示例
官方来源
常见问题
Nano Banana 2 和 Nano Banana 有什么区别？
Nano Banana 2 在本站增加了 2K、4K 档位，并把参考图上限从 3 张提升到 14 张。
Nano Banana 2 是 Pro 模型吗？
不是。它对应 Gemini 3.1 Flash Image Preview；需要 Gemini 3 Pro Image 路线时再选 Nano Banana Pro。
应该从哪个清晰度开始？
先用 1K 定构图，2K 做审核，4K 留给最终输出或细节检查。
使用这个模型
直接开始生成，或先对比模型
如果已经确定模型，可以进入生成器；如果提示词对速度、细节、参考图数量有不同要求，先查看模型对比会更稳。