Nano Banana 2 (Gemini 3.1 Flash Image Preview) API131K context

Pricing & specs mirror our live pricing as of July 2026 (pay-as-you-go).

What is Nano Banana 2 (Gemini 3.1 Flash Image Preview)?

Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...

Nano Banana 2 (Gemini 3.1 Flash Image Preview) on the release timeline

Nano Banana 2 (Gemini 3.1 Flash Image Preview) pricing

Pay-as-you-go on DataLLM Lab — these are our live list prices (identical to the pricing page):

On output price, Nano Banana 2 (Gemini 3.1 Flash Image Preview) is cheaper than 34% of the 309 models in the catalog. It is served by 2 providers; the best combined rate at our last snapshot was ≈ $0.50 / $3.00 per 1M via Google.

What Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs per month

Cost = input price × input volume + output price × output volume. The same five workloads run on every model page, so any two compare directly.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs alternatives

Specs

How to call Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Copyfrom openai import OpenAI
client = OpenAI(base_url="https://api.datallmlab.com/v1", api_key="YOUR_DATALLM_LAB_KEY")
resp = client.chat.completions.create(
    model="google/gemini-3.1-flash-image-preview",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

Copycurl https://api.datallmlab.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.1-flash-image-preview","messages":[{"role":"user","content":"Hello"}]}'

Copyimport OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.datallmlab.com/v1", apiKey: process.env.DATALLM_KEY });
const r = await client.chat.completions.create({
  model: "google/gemini-3.1-flash-image-preview",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(r.choices[0].message.content);

The same key routes Nano Banana 2 (Gemini 3.1 Flash Image Preview) and 300+ other models — switch models by changing one string. How OpenAI-compatible APIs work.

Prompting tips for Nano Banana 2 (Gemini 3.1 Flash Image Preview)

• State the goal, not every step. Nano Banana 2 (Gemini 3.1 Flash Image Preview) reasons internally — give it the objective, constraints and success criteria and let it plan the approach; over-scripting each step tends to lower quality. Turn effort up for hard problems.
• It reads images. Send image parts alongside your text and ask for specific outputs (named JSON fields, a table, "what changed") rather than "describe this".
• Constrain JSON with a schema. Use response_format / structured outputs rather than "reply in JSON" to get valid, parseable objects every time.

Tips are derived from Nano Banana 2 (Gemini 3.1 Flash Image Preview)'s actual capabilities — context window, tool & JSON support, modality and price tier — not generic advice.

Open-source tools for Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Popular open-source frameworks and agents to build with Nano Banana 2 (Gemini 3.1 Flash Image Preview) over the API — star counts pulled from GitHub (July 2026).

Listed by GitHub stars; inclusion is by ecosystem relevance (agent frameworks, SDKs and gateways), not affiliation. Stars change — see each repo for current numbers.

Migrating to Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Coming from OpenAI or another gateway? On an OpenAI-compatible setup the only changes are base_url → https://api.datallmlab.com/v1 and model → google/gemini-3.1-flash-image-preview. Messages, streaming and the rest of your code stay the same. Routing & failover guide.

Rate limits & reliability

Rate limits here are the DataLLM Lab gateway's, not the upstream vendor's. On 429 (rate limited) or 503 (provider busy), retry with exponential backoff; because Nano Banana 2 (Gemini 3.1 Flash Image Preview) is served by 2 providers, requests can fail over to a healthy one automatically. See the error-code guide and failover setup.

Related reading

Frequently asked questions