Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Public pricingIntelligence 79/100Medium memory視覚

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) はマルチモーダルモデルで、画像生成と編集に向いています。マルチモーダル入力処理、画像理解、66K tokensのコンテキスト、バランス型コストの特性を組み合わせ、画像生成と編集で安定した動作を支えます。遅延・コスト・スループットが重要な場面に合っており、安定した出力、柔軟な導入、拡張性を求めるチームに実用的です。安定した応答、長い文脈処理、そして試作から本番まで広く使える柔軟さが必要な場面で役立ちます。安定した応答、長い文脈処理、そして試作から本番まで広く使える柔軟さが必要な場面で役立ちます。安定した応答、長い文脈処理、そして試作から本番まで広く使える柔軟さが必要な場面で役立ちます。

Input

$0.50/1M

Output

$3.00/1M

Cached

$0.07/1M

Batch

$0.15/1M

Calculate your Nano Banana 2 (Gemini 3.1 Flash Image Preview) bill.

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What would Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost you?

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Conversations per month50,000

1,00010,00050,000250,0001M10M

Input length

Output length

Repeated questions?

Replies can wait a few hours (batch discount)

Technical specifications

Nano Banana 2 (Gemini 3.1 Flash Image Preview) at a glance.

Memory

65,536

tokens

Max reply

65,536

tokens

Memory tier

Medium

a long report or a codebase file

Tokenizer

sentencepiece

Released

Mar 2026

Training cutoff

Apr 2025

Availability

Public pricing

Status

active

What it can do

Capabilities & limits.

Understands images
Deep step-by-step thinking
Uses tools / calls functions
Strict JSON output
Streams replies
Fine-tunable on your data

When to pick Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Screenshot analysis, image understanding, or document OCR.
High-volume workloads where unit cost matters.
Multimodal pipelines mixing text + images.

When to look elsewhere

You need tool-use / function calling for agent workflows.

Alternatives

Similar models to compare.

FAQ

Nano Banana 2 (Gemini 3.1 Flash Image Preview) — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs roughly $158 per month. Input is $0.50 /1M tokens and output is $3.00 /1M tokens.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) has a 65,536-token context window (medium memory — a long report or a codebase file). That means you can fit about 12,288 words of input and history in a single call.

Beyond text generation, Nano Banana 2 (Gemini 3.1 Flash Image Preview) supports understanding images. It streams replies by default.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) was released in March 2026, with training data cut off around April 2025.

Models in a similar class include Gemini 3 Flash Preview, Gemini 2.5 Flash, Nano Banana (Gemini 2.5 Flash Image). The "Similar models" section below this FAQ links into each.

Still unsure?

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