Nano Banana 2.1
by Googletext+image->text+image1 endpoint
Overview
Nano Banana 2.1 (Gemini Nano Banana 2.1) is Google's image generation and editing model on the Flash tier, succeeding Nano Banana 2 and Nano Banana Pro. It improves product recontextualization, mask- and ink-based editing, and factual accuracy, and renders photorealistic skin tones, detailed materials, lighting, and coherent backgrounds. It accepts text and image inputs, returns images with optional text, and supports 1K, 2K, and 4K output plus extended aspect ratios via the image_config API Parameter.
Capabilities
Text generation
Image understanding
Image generation
Tool use / Function calling
Structured output
Extended reasoning
Top-P sampling
Deterministic seed
Modalities
Input
ImageText
Output
ImageText
Technical Specifications
Context Window
65.5K tokens
Max Output
59.0K tokens
Tokenizer
Gemini
Uptime (24h)
10000.0%
Supported Parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_p