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Google: Nano Banana 2 (Gemini 3.1 Flash Image)

Gemini 3.1 Flash Image, a.k.a. $0.50 per million input tokens, $3 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
$0.5
/M tokens
Output
$3
/M tokens
Image
$60
/M tokens
Web search
$14
/1K calls
API

Model configuration

Reasoning

Moderated
No
Default parameters
minimal
Capabilities
high, minimal
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-3.1-flash-image","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

InputOutput

Input
imagetext
Output
imagetext
Reasoning

Yes · high · minimal

API

Supported API parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetop_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
131K
Maximum output
33K
Input
$0.500
Output
$3.00
Cache read
Not provided
Cache write
Not provided

Google AI Studio

unknown
Context
66K
Maximum output
59K
Input
$0.500
Output
$3.00
Cache read
Not provided
Cache write
Not provided
google

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