Balanced — strong quality at a mid priceCommercial API

Nano Banana 2 (Gemini 3.1 Flash Image Preview) Pricing

Google · google-gemini-3-1-flash-image-preview

Input / 1M tokens

$0.500

Output / 1M tokens

$3.00

Context window

131,072 tokens

≈ 175 pages of text

Max output

65,536 tokens

What it costs in practice

Typical request (1,200 in + 400 out tokens)$0.0018

1,000 requests / month$1.80/mo 10,000 requests / month$18.00/mo 100,000 requests / month$180.00/mo

Estimate your own workloadOpens the calculator with Nano Banana 2 (Gemini 3.1 Flash Image Preview) preloaded — adjust volume and token counts there.

Price history

Only one price point recorded so far.

The staircase chart appears once a price change is detected.

Pricing and specs for this model are auto-synced from OpenRouter, but it isn't one of our editorial picks yet — no “what it excels at” write-up or business tradeoff notes. Any tier badge above is estimated from price.

Cheaper from Google

Gemini 3.1 Flash LiteGoogle$0.0009/ typical request Gemma 4 26B A4BGoogle$0.0002/ typical request

Same tier from other providers

GPT-5.4 MiniOpenAI$0.0027/ typical request Claude Sonnet 4.6Anthropic$0.0096/ typical request Llama 4 MaverickMeta$0.0004/ typical request

Head-to-head

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs GPT-5.4 Mini →Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Claude Sonnet 4.6 →Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Llama 4 Maverick →

Vendor list rates, as of Jun 15, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.