> ## Documentation Index > Fetch the complete documentation index at: https://docs.anyfast.ai/llms.txt > Use this file to discover all available pages before exploring further. # gemini-nano-banana-2.1 > 根据文本、图片、视频或 PDF 输入生成图片和可选文本。 ## OpenAPI ````yaml zh/api-reference/model-api/google/openapi/gemini-nano-banana-2-1/openapi.yaml POST /v1beta/models/gemini-nano-banana-2.1:generateContent openapi: 3.1.0 info: title: Gemini Nano Banana 2.1 description: 通过 AnyFast 原生 Gemini API 使用 Gemini Nano Banana 2.1 生成和编辑图片。 version: 1.0.0 servers: - url: https://www.anyfast.ai security: [] paths: /v1beta/models/gemini-nano-banana-2.1:generateContent: post: summary: 生成或编辑图片 description: 根据文本、图片、视频或 PDF 输入生成图片和可选文本。 operationId: GeminiNanoBanana21GenerateContent parameters: - name: key in: query required: true description: AnyFast API Key。 schema: type: string example: YOUR_API_KEY requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/GenerateContentRequest' examples: textToImage: summary: 文生图 value: contents: - role: user parts: - text: 为一把半透明蓝色机械键盘设计简洁的 16:9 产品海报。 generationConfig: responseModalities: - TEXT - IMAGE responseFormat: image: aspectRatio: '16:9' imageSize: 2K imageEditing: summary: 图片编辑 value: contents: - role: user parts: - text: 保持产品不变，将背景替换为温暖的木质桌面。 - inline_data: mime_type: image/png data: YOUR_BASE64_IMAGE_DATA generationConfig: responseModalities: - IMAGE responseFormat: image: aspectRatio: '4:3' imageSize: 2K responses: '200': description: 内容生成成功。 content: application/json: schema: $ref: '#/components/schemas/GenerateContentResponse' example: candidates: - content: role: model parts: - text: 已生成产品海报。 - inlineData: mimeType: image/png data: iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJ finishReason: STOP usageMetadata: promptTokenCount: 24 candidatesTokenCount: 1680 totalTokenCount: 1704 modelVersion: gemini-nano-banana-2.1 responseId: response_example '400': description: 请求参数无效。 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: API Key 缺失或无效。 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '429': description: 请求频率超限。 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' x-codeSamples: - lang: bash label: cURL source: > curl "https://www.anyfast.ai/v1beta/models/gemini-nano-banana-2.1:generateContent?key=YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "contents": [{ "role": "user", "parts": [{ "text": "为一把半透明蓝色机械键盘设计简洁的 16:9 产品海报。" }] }], "generationConfig": { "responseModalities": ["TEXT", "IMAGE"], "thinkingConfig": {"thinkingLevel": "medium"}, "responseFormat": { "image": {"aspectRatio": "16:9", "imageSize": "2K"} } } }' components: schemas: GenerateContentRequest: type: object required: - contents properties: contents: type: array minItems: 1 description: 包含提示词和参考素材的对话内容。 items: $ref: '#/components/schemas/Content' generationConfig: $ref: '#/components/schemas/GenerationConfig' GenerateContentResponse: type: object properties: candidates: type: array items: $ref: '#/components/schemas/Candidate' promptFeedback: type: object additionalProperties: true usageMetadata: $ref: '#/components/schemas/UsageMetadata' modelVersion: type: string example: gemini-nano-banana-2.1 responseId: type: string ErrorResponse: type: object properties: error: type: object properties: code: type: integer message: type: string status: type: string Content: type: object required: - parts properties: role: type: string enum: - user - model default: user parts: type: array minItems: 1 items: $ref: '#/components/schemas/Part' GenerationConfig: type: object properties: responseModalities: type: array description: 仅返回图片，或同时返回文本和图片。默认同时返回文本和图片。 minItems: 1 uniqueItems: true items: type: string enum: - TEXT - IMAGE example: - TEXT - IMAGE responseFormat: type: object properties: image: $ref: '#/components/schemas/ImageResponseFormat' thinkingConfig: $ref: '#/components/schemas/ThinkingConfig' Candidate: type: object properties: content: type: object properties: role: type: string example: model parts: type: array items: $ref: '#/components/schemas/ResponsePart' finishReason: type: string enum: - STOP - MAX_TOKENS - SAFETY - RECITATION - OTHER index: type: integer safetyRatings: type: array items: type: object additionalProperties: true UsageMetadata: type: object properties: promptTokenCount: type: integer candidatesTokenCount: type: integer totalTokenCount: type: integer thoughtsTokenCount: type: integer Part: type: object description: 文本或媒体内容块。根据内容类型填写对应字段。 properties: text: type: string description: 文本提示词或编辑指令。 inline_data: $ref: '#/components/schemas/InlineDataInput' file_data: $ref: '#/components/schemas/FileDataInput' video_metadata: $ref: '#/components/schemas/VideoMetadata' ImageResponseFormat: type: object properties: aspectRatio: type: string description: 输出图片宽高比。 enum: - '1:1' - '1:4' - '1:8' - '2:3' - '3:2' - '3:4' - '4:1' - '4:3' - '4:5' - '5:4' - '8:1' - '9:16' - '16:9' - '21:9' example: '16:9' imageSize: type: string description: 输出分辨率，默认 1K。 enum: - 1K - 2K - 4K default: 1K ThinkingConfig: type: object properties: thinkingLevel: type: string description: 思考强度，默认 medium。 enum: - minimal - medium - high default: medium includeThoughts: type: boolean default: false description: 是否允许在响应中返回思考内容块。 ResponsePart: type: object properties: text: type: string inlineData: type: object required: - mimeType - data properties: mimeType: type: string example: image/png data: type: string format: byte description: Base64 编码的生成图片。 thought: type: boolean description: 为 true 时，该内容块属于模型思考过程而不是最终结果。 thoughtSignature: type: string description: 继续多轮对话时需要保留的不透明签名。 InlineDataInput: type: object required: - mime_type - data description: Base64 编码的内联图片、视频或 PDF 数据。 properties: mime_type: type: string description: 编码内容的 MIME 类型。 example: image/png data: type: string format: byte description: 不包含 data URL 前缀的 Base64 数据。 FileDataInput: type: object required: - mime_type - file_uri description: 通过 Gemini Files API 上传的文件。 properties: mime_type: type: string example: application/pdf file_uri: type: string description: 文件上传接口返回的 URI，或支持的公开视频 URI。 VideoMetadata: type: object description: 视频输入采样配置。 properties: fps: type: number exclusiveMinimum: 0 example: 0.5 ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.