Google 上线 Gemini Nano Banana 2.1 图像模型
Google 在 Gemini API 文档中上线 Gemini Nano Banana 2.1（gemini-nano-banana-2.1），定位为高效图像生成与对话式编辑模型。它是 Nano Banana 2（Gemini 3.1 Flash Image）的更新版本，保持 Flash 级速度与成本效率，并在视觉质量、提示词遵循、多轮角色一致性和文本渲染方面有显著提升，作为 Gemini 3 Pro Image（Nano Banana Pro）的更高效对应版本。该模型支持 1K、2K、4K 输出分辨率（默认 1K），修复了 2K 与 4K 下宽幅和全景宽高比（1:4、4:1、1:8、8:1）的拼接伪影，增强文本渲染与信息图布局准确性，支持最多 14 张参考图的多图融合（最多 4 个角色一致性与 10 个对象保真），并支持 Google Web 与 Image Search 接地以及可配置的 Thinking 级别（minimal、默认 medium、high）。
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Gemini Nano Banana 2.1 | Gemini API | Google AI for Developers Skip to main content (https://ai.google.dev/gemini-api/docs/models/gemini-nano-banana-2.1#main-content) (https://ai.google.dev/) / English Deutsch Español – América Latina Français Indonesia Italiano Polski Português – Brasil Shqip Tiếng Việt Türkçe Русский עברית العربيّة فارسی हिंदी বাংলা ภาษาไทย 中文 – 简体 中文 – 繁體 日本語 한국어 Get API key (https://aistudio.google.com/apikey) Cookbook (https://github.com/google-gemini/cookbook) Community (https://discuss.ai.google.dev/c/gemini-api/) Sign in Docs (https://ai.google.dev/gemini-api/docs) API reference (https://ai.google.dev/api) (https://ai.google.dev/) Gemini API (https://ai.google.dev/gemini-api/docs) Docs (https://ai.google.dev/gemini-api/docs) API reference (https://ai.google.dev/api) Get API key (https://aistudio.google.com/apikey) Cookbook (https://github.com/google-gemini/cookbook) Community (https://discuss.ai.google.dev/c/gemini-api/) Get started Overview (https://ai.google.dev/gemini-api/docs) Get started (https://ai.google.dev/gemini-api/docs/get-started) API keys (https://ai.google.dev/gemini-api/docs/api-key) Pricing (https://ai.google.dev/gemini-api/docs/pricing) Coding agent setup (https://ai.google.dev/gemini-api/docs/coding-agents) Models All models (https://ai.google.dev/gemini-api/docs/models) Latest Gemini models (https://ai.google.dev/gemini-api/docs/latest-model) Nano Banana (https://ai.google.dev/gemini-api/docs/image-generation) Veo (https://ai.google.dev/gemini-api/docs/veo) Gemini Omni Flash (https://ai.google.dev/gemini-api/docs/omni) Lyria 3.5 & Lyria Clip Overview (https://ai.google.dev/gemini-api/docs/music-generation) Lyria RealTime (https://ai.google.dev/gemini-api/docs/realtime-music-generation) Lyria prompt guide (https://ai.google.dev/gemini-api/docs/lyria-prompt-guide) Text-to-speech Overview (https://ai.google.dev/gemini-api/docs/speech-generation) Voice design (https://ai.google.dev/gemini-api/docs/voice-design) Voice replication (https://ai.google.dev/gemini-api/docs/voice-replication) Transcribe (https://ai.google.dev/gemini-api/docs/transcribe) Live (https://ai.google.dev/gemini-api/docs/live-api) Live translate (https://ai.google.dev/gemini-api/docs/live-api/live-translate) Embeddings (https://ai.google.dev/gemini-api/docs/embeddings) Robotics Overview (https://ai.google.dev/gemini-api/docs/robotics-overview) Spatial reasoning (https://ai.google.dev/gemini-api/docs/robotics-spatial) Agentic vision (https://ai.google.dev/gemini-api/docs/robotics-agentic) Task orchestration (https://ai.google.dev/gemini-api/docs/robotics-orchestration) Robotics with streaming (https://ai.google.dev/gemini-api/docs/robotics-streaming) Video understanding (https://ai.google.dev/gemini-api/docs/robotics-video-progress) Core capabilities Text (https://ai.google.dev/gemini-api/docs/text-generation) Image Image generation 🍌 (https://ai.google.dev/gemini-api/docs/image-generation) Image understanding (https://ai.google.dev/gemini-api/docs/image-understanding) Video Video overview (https://ai.google.dev/gemini-api/docs/video) Video understanding (https://ai.google.dev/gemini-api/docs/video-understanding) Documents (https://ai.google.dev/gemini-api/docs/document-processing) Speech and audio Speech generation (https://ai.google.dev/gemini-api/docs/speech-generation) Audio understanding (https://ai.google.dev/gemini-api/docs/audio) Audio transcription (https://ai.google.dev/gemini-api/docs/transcribe) Thinking Thinking (https://ai.google.dev/gemini-api/docs/thinking) Thought signatures (https://ai.google.dev/gemini-api/docs/thought-signatures) Structured outputs (https://ai.google.dev/gemini-api/docs/structured-output) Function calling (https://ai.google.dev/gemini-api/docs/function-calling) Long context (https://ai.google.dev/gemini-api/docs/long-context) Agents Overview (https://ai.google.dev/gemini-api/docs/agents) Quickstart (https://ai.google.dev/gemini-api/docs/m
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Google Gemini Nano Banana 2.1 Gemini Nano Banana 2.1 https://ai.google.dev/gemini-api/docs/models/gemini-nano-banana-2.1
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