工作流 / 图像 / Nano Banana 2.1：文生图
Nano Banana 2.1：文生图

Nano Banana 2.1: Text to Image
使用 Nano Banana 2.1（Google 基于 Gemini 的快速图像模型）从文本提示生成图像，输出一张已完成图像，无需任何输入文件。非常适合品牌营销海报、电商产品视觉图和 IP 角色系列。
图像 2 个节点 5,481 次使用 ComfyUI ≥ 0.39.1 ComfyUI 8 KB
下载工作流 JSON 查看官方来源
下载后把文件拖进 ComfyUI 窗口即可打开。
节点构成

GeminiNanoBanana2V2 × 1
SaveImageAdvanced × 1
官方标注的模型

Nano Banana
工作流 JSON

和上面「下载工作流 JSON」是同一份文件。
1{
  "id": "932d44b6-d230-42e1-8797-6614e9376796",
  "revision": 0,
  "last_node_id": 3,
  "last_link_id": 2,
  "nodes": [
      {
          "id": 1,
          "type": "GeminiNanoBanana2V2",
          "pos": [
              1760,
              760
          ],
          "size": [
              400,
              460
          ],
          "flags": [],
          "order": 0,
          "mode": 0,
          "inputs": [
              {
                  "name": "model.images.image_1",
                  "shape": 7,
                  "type": "IMAGE",
                  "link": null
              },
              {
                  "name": "model.files",
                  "shape": 7,
                  "type": "GEMINI_INPUT_FILES",
                  "link": null
              }
          ],
          "outputs": [
              {
                  "name": "IMAGE",
                  "type": "IMAGE",
                  "links": [
                      2
                  ]
              },
              {
                  "name": "STRING",
                  "type": "STRING",
                  "links": null
              },
              {
                  "name": "thought_image",
                  "type": "IMAGE",
                  "links": null
              }
          ],
          "properties": {
              "Node name for S&R": "GeminiNanoBanana2V2"
          },
          "widgets_values": [
              "Create an original high-fashion experimental poster for the image model Nano Banana 2.1. Square composition, pure black background.\nPlace one large, unmistakable ripe yellow banana at the center. Show its complete curved silhouette from stem to tip, with a natural peel, subtle brown details, and realistic texture. The banana is the hero object and occupies much of the frame.\nSurround it with only a few oversized transparent glass lenses and polished liquid-chrome forms. Use striking refractions and sharp reflections, but keep the banana’s entire shape easy to recognize. Dramatic studio lighting, deep blacks, bright highlights, premium 3D fashion-campaign finish.\nMake the typography bold, graphic, and impossible to miss. Use solid bright-white letterforms with substantial weight, clean edges, and strong contrast against the black background. Avoid thin, delicate, outlined, or hairline fonts.\n“NANO” sits across the upper area in oversized, heavy geometric capitals. Space the letters deliberately and vary their placement slightly for an editorial rhythm.\n“BANANA” is the dominant typographic statement across the middle: very large, extra-bold condensed italic sans-serif, with tightly controlled spacing and a confident forward slant. Give it the impact of a luxury fashion masthead. Let it cross the composition, but position it so the banana remains visually clear; use selective layering where the banana passes in front of a small portion of the letters. Every letter must still be readable.\n“2.1” appears once, large and heavy in the lower right. Align it precisely with the poster’s edges to anchor the composition.\nThe three elements must immediately read together as NANO BANANA 2.1. Create hierarchy through contrasting scale, weight, spacing, and alignment. Let one or two glass elements overlap small areas of the typography without obscuring any word.\nAdd only two small editorial labels, each appearing once: “IMAGE” and “IMAGINATION”. Set them in crisp, legible type beside a few thin white rules and precise graphic markers. No repeated small text or filler writing.\nPalette: pure black, bright white, banana yellow, transparent glass, and restrained chrome. Contemporary, glossy, bold, fashion-forward, and visually striking. Render all specified text exactly. No quotation marks, extra words, logos, or watermarks.",
              "Gemini Nano Banana 2.1",
              "auto",
              "1K",
              "MEDIUM",
              806403384898350,
              "randomize",
              "IMAGE",
              "You are an expert image-generation engine. You must ALWAYS produce an image.\nInterpret all user input—regardless of format, intent, or abstraction—as literal visual directives for image composition.\nIf a prompt is conversational or lacks specific visual details, you must creatively invent a concrete visual scenario that depicts the concept.\nPrioritize generating the visual representation above any text, formatting, or conversational requests.",
              1,
              0.95
          ],
          "widgets_values_named": {
              "prompt": "Create an original high-fashion experimental poster for the image model Nano Banana 2.1. Square composition, pure black background.\nPlace one large, unmistakable ripe yellow banana at the center. Show its complete curved silhouette from stem to tip, with a natural peel, subtle brown details, and realistic texture. The banana is the hero object and occupies much of the frame.\nSurround it with only a few oversized transparent glass lenses and polished liquid-chrome forms. Use striking refractions and sharp reflections, but keep the banana’s entire shape easy to recognize. Dramatic studio lighting, deep blacks, bright highlights, premium 3D fashion-campaign finish.\nMake the typography bold, graphic, and impossible to miss. Use solid bright-white letterforms with substantial weight, clean edges, and strong contrast against the black background. Avoid thin, delicate, outlined, or hairline fonts.\n“NANO” sits across the upper area in oversized, heavy geometric capitals. Space the letters deliberately and vary their placement slightly for an editorial rhythm.\n“BANANA” is the dominant typographic statement across the middle: very large, extra-bold condensed italic sans-serif, with tightly controlled spacing and a confident forward slant. Give it the impact of a luxury fashion masthead. Let it cross the composition, but position it so the banana remains visually clear; use selective layering where the banana passes in front of a small portion of the letters. Every letter must still be readable.\n“2.1” appears once, large and heavy in the lower right. Align it precisely with the poster’s edges to anchor the composition.\nThe three elements must immediately read together as NANO BANANA 2.1. Create hierarchy through contrasting scale, weight, spacing, and alignment. Let one or two glass elements overlap small areas of the typography without obscuring any word.\nAdd only two small editorial labels, each appearing once: “IMAGE” and “IMAGINATION”. Set them in crisp, legible type beside a few thin white rules and precise graphic markers. No repeated small text or filler writing.\nPalette: pure black, bright white, banana yellow, transparent glass, and restrained chrome. Contemporary, glossy, bold, fashion-forward, and visually striking. Render all specified text exactly. No quotation marks, extra words, logos, or watermarks.",
              "model": "Gemini Nano Banana 2.1",
              "model.aspect_ratio": "auto",
              "model.resolution": "1K",
              "model.thinking_level": "MEDIUM",
              "seed": 806403384898350,
              "control_after_generate": "randomize",
              "response_modalities": "IMAGE",
              "system_prompt": "You are an expert image-generation engine. You must ALWAYS produce an image.\nInterpret all user input—regardless of format, intent, or abstraction—as literal visual directives for image composition.\nIf a prompt is conversational or lacks specific visual details, you must creatively invent a concrete visual scenario that depicts the concept.\nPrioritize generating the visual representation above any text, formatting, or conversational requests.",
              "temperature": 1,
              "top_p": 0.95
          },
          "color": "#432",
          "bgcolor": "#653"
      },
      {
          "id": 3,
          "type": "SaveImageAdvanced",
          "pos": [
              2190,
              760
          ],
          "size": [
              660,
              470
          ],
          "flags": [],
          "order": 1,
          "mode": 0,
          "inputs": [
              {
                  "name": "images",
                  "type": "IMAGE",
                  "link": 2
              }
          ],
          "outputs": [
              {
                  "name": "images",
                  "type": "IMAGE",
                  "links": null
              }
          ],
          "properties": [],
          "widgets_values": [
              "Nano_Banana_2.1",
              "png",
              "8-bit",
              "sRGB"
          ],
          "widgets_values_named": {
              "filename_prefix": "Nano_Banana_2.1",
              "format": "png",
              "format.bit_depth": "8-bit",
              "format.input_color_space": "sRGB"
          }
      }
  ],
  "links": [
      [
          2,
          1,
          0,
          3,
          0,
          "IMAGE"
      ]
  ],
  "groups": [],
  "config": [],
  "extra": {
      "ds": {
          "scale": 1.193518102703992,
          "offset": [
              -1525.1324491307016,
              -529.0511657928494
          ]
      },
      "frontendVersion": "1.53.6"
  },
  "version": 0.4
152}
Nano Banana 2.1：文生图

节点构成

官方标注的模型

工作流 JSON 复制

工作流 JSON
