Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)
🇺🇸 Google · Nano Banana
Overview
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is a large language model API from Google, part of its Nano Banana model family. Priced at $0.500 per million input tokens and $3.00 per million output tokens, it occupies the mid-range, balancing capability against running cost. Output tokens cost about 6× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. The 131K-token context window — around 197 pages of text — comfortably handles long documents, multi-file code, or extended conversations. Beyond plain text it also accepts Image input, so it can be applied to multimodal tasks rather than text alone. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.
| Dimension | Unit | Price (USD) |
|---|---|---|
| Input | per 1M tokens | $0.500 |
| Output | per 1M tokens | $3.00 |
| Web Search | per search | $0.014 |
- Provider
- Model Family
- Nano Banana
- Version String
- google/gemini-3.1-flash-image-preview
- Status
- Active
- Modality
- Image, Text
- Context Window
- 131,072 tokens
- Output Limit
- 32,768 tokens
90-Day Price Trend
Input / Output price (USD per 1M tokens)
Past 90 days of records; every price change is shown here
| Date | Dimension | Price (USD) | Source |
|---|---|---|---|
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter | |
| Input | $0.500 | OpenRouter | |
| Web Search | $0.014 | OpenRouter | |
| Output | $3.00 | OpenRouter |
Key Insights
Key data points from this page for quick reference and citation.
- Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) Input price: $0.5/M tokens
- Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) Output price: $3/M tokens
- Context window: 131,072 tokens
- Provider: Google
- Model family: Nano Banana
- Modalities: Image, Text
- Data source: OpenRouter, updated daily