Nano Banana 2 (Gemini 3.1 Flash Image) vs Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on September 30, 2026· 217 models
Gemini 3.1 Flash Image, a.k.a.
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- ▲131 K tokens
- Max output
- 33 K
- Input, $ per 1M tokens
- $0.500
- Output, $ per 1M tokens
- $3.00
- Cache read, $ per 1M
- $0.050
- Batch (input / output)
- —
- Tool calling
- No
- Released
- ▲05/28/2026
- Knowledge cutoff
- 2025-01
- API id
- google/gemini-3.1-flash-image
Gemini 3.1 Flash Image Preview, a.k.a.
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- 66 K tokens
- Max output
- ▲59 K
- Input, $ per 1M tokens
- $0.500
- Output, $ per 1M tokens
- $3.00
- Cache read, $ per 1M
- $0.050
- Batch (input / output)
- —
- Tool calling
- No
- Released
- 02/26/2026
- Knowledge cutoff
- 2025-01
- API id
- google/gemini-3.1-flash-image-preview
Which is the better API choice: Nano Banana 2 (Gemini 3.1 Flash Image) vs Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
- Nano Banana 2 (Gemini 3.1 Flash Image): largest context (131 K)
- Nano Banana 2 (Gemini 3.1 Flash Image): the newest (05/28/2026)
Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost the same ($0.500 input, $3.00 output per million tokens). Nano Banana 2 (Gemini 3.1 Flash Image) accepts more context (131 K).
What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
They cost the same at this volume.
The 6 cheapest for this scenario (chat, last 12 months)
- 1Lyria 3 Pro Preview Google$0.00
- 2Lyria 3 Clip Preview Google$0.00
- 3Qwen3.7 Flash Qwen$0.97
- 4DeepSeek V4 Flash 0731 DeepSeek$1.55
- 5Ministral 3 3B 2512 Mistral$1.90
- 6Qwen3.5-Flash Qwen$2.02
Paste your prompt: tokens and cost per model
Rough estimate (about 4 characters per token). Nothing is sent to any server.
Cost of sending it 1,000 times (input only)
- 1Nano Banana 2 (Gemini 3.1 Flash Image) Google$0.038
- 2Nano Banana 2 (Gemini 3.1 Flash Image Preview) Google$0.038
- 3Claude Sonnet 5.5 Anthropic$0.152
- 4Claude Sonnet 5 Anthropic$0.152
- 5Claude Opus 5.5 Anthropic$0.304
- 6Claude Opus 5 Anthropic$0.380
- 7Claude Fable 5.1 Anthropic$0.760
- 8Claude Fable 5 Anthropic$0.760
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Frequently asked questions
Which is the better API choice: Nano Banana 2 (Gemini 3.1 Flash Image) vs Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost the same ($0.500 input, $3.00 output per million tokens). Nano Banana 2 (Gemini 3.1 Flash Image) accepts more context (131 K).
Which is cheaper: Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost the same: $0.500 per million input tokens and $3.00 output.
Which has more context: Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image) accepts 131 K tokens of context; Nano Banana 2 (Gemini 3.1 Flash Image Preview) accepts 66 K.
Which is newer: Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image) was released on 05/28/2026; Nano Banana 2 (Gemini 3.1 Flash Image Preview) on 02/26/2026.
What would 10,000 requests a month cost with Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
With 1,500 input and 400 output tokens per request: Nano Banana 2 (Gemini 3.1 Flash Image): $19.50; Nano Banana 2 (Gemini 3.1 Flash Image Preview): $19.50 a month, at list price.
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.