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

Public pricingIntelligence 79/100Medium memory视觉

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) 是一款多模态模型，适合图像生成与编辑。它结合了多模态输入处理、图像理解、66K tokens上下文和均衡成本定位，可在图像生成与编辑中提供可靠表现。它适合重视延迟、成本与吞吐的团队，能带来稳定输出、灵活部署与扩展空间。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。

Input

$0.50/1M

Output

$3.00/1M

Cached

$0.07/1M

Batch

$0.15/1M

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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.

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