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Google: Nano Banana Pro (Gemini 3 Pro Image)

Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. $2 per million input tokens, $12 per million output tokens. 131,072 token context window, maximum output of 32,768 tokens. Higher uptime with 2 providers.

Overview

Model specifications

Context
131,072 tokens
Maximum output
32,768 tokens
Architecture
text+image->text+image
Tokenizer
Gemini
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$2
/M tokens
Output
$12
/M tokens
Cache read
$0.2
/M tokens
Cache write
$0.375
/M tokens
Image Input
$2
/M tokens
Image
$120
/M tokens
Input Audio
$2
/M tokens
Input Audio Cache
$0.2
/M tokens
Web search
$14
/1K calls
API

Model configuration

Reasoning

Moderated
Yes
Default parameters
No
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3-pro-image","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

InputOutput

Input
imagetext
Output
imagetext
Reasoning

No

API

Supported API parameters

include_reasoningmax_tokensreasoningresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p
Available providers

2 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

Google

unknown
Context
66K
Maximum output
33K
Input
$2.00
Output
$12.00
Cache read
$0.200
Cache write
$0.375

Google AI Studio

unknown
Context
131K
Maximum output
33K
Input
$2.00
Output
$12.00
Cache read
$0.200
Cache write
$0.375
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