Last updated: October 12, 2026. Google quietly promoted a new default image model in the Gemini API: Nano Banana 2.1 (model ID gemini-nano-banana-2.1). The official docs call it the primary high-efficiency workhorse for image generation and conversational editing, and recommend it for all new projects. Here is what changed versus Nano Banana 2 and where it sits in the family.
What is Nano Banana 2.1?
Nano Banana 2.1 is an update to Nano Banana 2 in the Gemini API. It keeps Flash-level speed and cost efficiency while improving visual quality, text rendering and multi-turn consistency, and supports 4K generation with multi-reference image consistency. In practice: the meme-named image model got a serious mid-generation refresh.
The Nano Banana family, clarified
- Nano Banana 2.1 — the high-efficiency workhorse; recommended default for new projects
- Nano Banana Pro (Gemini 3 Pro Image) — premium tier for complex visual tasks, advanced localization and brand consistency
- Nano Banana (Gemini 2.5 Flash Image) — the original model that started the name
- Gemini 3.1 Flash Image — a sibling speed-optimized model in the same lineup
What changed vs Nano Banana 2
- Visual quality — noticeable improvements in realism and detail
- Text rendering — more reliable legible text inside images
- Multi-turn consistency — subjects stay stable across conversational edits
- 4K generation — high-resolution output in the workhorse tier
Pricing
Nano Banana 2.1 sits in the Flash cost tier — third-party tracking around launch put it near $1.50 per million input tokens, but pricing shifts; treat the official Gemini API docs as the source of truth. Nano Banana Pro costs more and buys you the highest world knowledge and precision creative control.
How to use it
Use model ID gemini-nano-banana-2.1 in the Gemini API for generation and conversational editing (upload an image, then iterate by chatting). We track it in the directory here: Nano Banana 2.1 listing.
How it compares
Against open weights: Qwen-Image 2.1 is the local, fine-tunable alternative — see our Qwen-Image 2.1 guide covering the Turbo update and local setup. Nano Banana 2.1 is the zero-setup hosted default; Qwen is the control-everything option.
FAQ
Is Nano Banana 2.1 the same as Nano Banana Pro?
No. Pro (Gemini 3 Pro Image) is the premium tier; 2.1 is the fast, cheap workhorse Google recommends as the default.
Can it edit existing images?
Yes — conversational editing is a first-class use case, with multi-turn consistency to keep subjects stable while you iterate.
What is the model ID?
gemini-nano-banana-2.1 in the Gemini API.
