CheapestCoding Long-contextBest value Get an API key
🎯 Don't want to pick? Send model: "appmo/auto" and Appmo routes each request to the cheapest model that's good enough — cutting your bill up to 40%. See how →
Models › google › Google: Nano Banana 2 (Gemini 3.1 Flash Image)

Google: Nano Banana 2 (Gemini 3.1 Flash Image) — pricing & benchmarks

By google · Updated 2026-07-24 · vision / documentsstep-by-step reasoning

Google: Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.5 per 1M input tokens and $3 per 1M output tokens, with a 131K context window. It is best suited for vision / documents, step-by-step reasoning, and is available through one OpenAI-compatible Appmo API key.
$0.5Input / 1M
$3Output / 1M
131KContext
—Intelligence
—Coding
—GPQA %
—Speed tok/s

What Google: Nano Banana 2 (Gemini 3.1 Flash Image) is used for

Google: Nano Banana 2 (Gemini 3.1 Flash Image) is best suited for vision / documents, step-by-step reasoning. Access it through one Appmo API key alongside 390 other models — Appmo's optimizer can route to it automatically when it is the best value for a request.

Use it via the Appmo API (OpenAI-compatible)

curl https://appmo.com/v1/chat/completions \
  -H "Authorization: Bearer $APPMO_KEY" \
  -d '{"model":"google/gemini-3.1-flash-image","messages":[{"role":"user","content":"Hello"}]}'

FAQ

How much does Google: Nano Banana 2 (Gemini 3.1 Flash Image) cost?
Google: Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.5 per 1M input tokens and $3 per 1M output tokens ($1.125 blended), as of 2026-07-24. Prices are expected to fall as competition increases.

What is Google: Nano Banana 2 (Gemini 3.1 Flash Image) best for?
Google: Nano Banana 2 (Gemini 3.1 Flash Image) is best suited for vision / documents, step-by-step reasoning.

How do I use Google: Nano Banana 2 (Gemini 3.1 Flash Image)?
Send requests to Appmo's OpenAI-compatible endpoint with model id "google/gemini-3.1-flash-image" and one API key — no separate provider account needed.