Day 0 Support: Nano Banana 2.1
LiteLLM supports gemini-nano-banana-2.1 on day 0 on Google AI Studio (gemini/) and Gemini Enterprise Agent Platform, formerly Vertex AI (vertex_ai/), through /v1/images/generations, /v1/images/edits and /chat/completions. It replaces Nano Banana 2 (gemini-3.1-flash-image), which the Gemini API shuts down on October 29, 2026.