---
id: "google/gemini-3-pro-image-preview"
also: ["google/gemini-3-pro-image-preview-20251120"]
cheapest_list_usd_per_m: "1.0 in, 6.0 out, at google-ai-studio/global/flex on openrouter"
cheapest_effective_usd_per_m: "0.9984 in, 43.0504 out, at google-ai-studio/global/flex on openrouter"
context: 65536
max_output: 32768
input: ["image", "text"]
output: ["image", "text"]
released: "2025-11-20"
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses", "/api/v1/images"]
params: ["include_reasoning", "max_tokens", "reasoning", "response_format", "seed", "stop", "structured_outputs", "temperature", "top_p"]
endpoints: 2
gateways: "openrouter (2)"
no_training: 2
trains: 0
retains_prompts: 2
---
# Google: Nano Banana Pro (Gemini 3 Pro Image Preview)

Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and...