Nano Banana 2 Lite is Google's lightweight image model within the Nano Banana family, carrying the API name gemini-3.1-flash-lite-image. Google released it on June 30, 2026, and explicitly framed it as the fastest and most cost-efficient member of its Gemini image lineup, built for speed and scale rather than maximum creative control. Its position in the family signals that it inherits the multimodal foundations of Google's Gemini image work while being optimized for rapid text-to-image generation and editing, making it the lighter counterpart to Nano Banana 2 standard and Pro for tasks that do not require the most complex image work, multi-reference control, or long multi-turn editing sessions.
Google's stated targets for the model are a roughly 4-second generation time per 1K-resolution image and about $0.034 per 1K image, designed for high-throughput use cases such as ad variants, product mockups, marketplace imagery, thumbnails, UI concepts, and batch creative pipelines. Coursiv describes it as "the model to test when you need lots of good-enough images quickly," and notes availability through Google AI Studio, the Gemini API, and the Gemini Enterprise Agent Platform, alongside consumer surfaces including AI Mode in Search, the Gemini app, NotebookLM, Google Photos, Stitch, Google Flow, and Google Ads. Practical fit centers on prototyping and bulk generation, while users needing deeper reasoning or richer compositional control are pointed toward Nano Banana 2 or Nano Banana Pro.