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Nano Banana (Gemini 2.5 Flash Image) API33K context

by Google · text+image->text+image · released 2025-10-07

Gemini 2.5 Flash Image, a.k.a.

Get an API key Try in Chat https://api.datallmlab.com/v1
Input / 1M
$0.30
Output / 1M
$2.50
Context
33K
Providers
2
Cheaper than
36% of catalog

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

What is Nano Banana (Gemini 2.5 Flash Image)?

Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation,...

Nano Banana (Gemini 2.5 Flash Image) on the release timeline

$0.10$1.10$12.00Nano Banana (Gemini 2.5 Flash Image) · $2.502024-072025-102026-06
Each point is a Google model, placed at its launch date with its current output price (log scale, $/1M). Bubble size ∝ context window; Nano Banana (Gemini 2.5 Flash Image) is highlighted. Source: provider catalog, verified July 2026.

Nano Banana (Gemini 2.5 Flash Image) pricing

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

ModelInput / 1MOutput / 1MCache readCache writeContext
Nano Banana (Gemini 2.5 Flash Image)$0.30$2.50$0.03$0.0833K

On output price, Nano Banana (Gemini 2.5 Flash Image) is cheaper than 36% of the 309 models in the catalog. It is served by 2 providers; the best combined rate at our last snapshot was ≈ $0.30 / $2.50 per 1M via Google AI Studio.

What Nano Banana (Gemini 2.5 Flash Image) costs per month

WorkloadTokens in / out (monthly)Est. cost
Support chatbot40M / 12M$42.00
RAG / knowledge base200M / 20M$110
Coding agent80M / 25M$86.50
Batch extraction150M / 8M$65.00
Content generation20M / 40M$106

Estimate your own monthly cost

= input × $0.30 + output × $2.50 per 1M · pay-as-you-go, computed in your browser.

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 (Gemini 2.5 Flash Image) vs alternatives

Pick Nano Banana (Gemini 2.5 Flash Image) when you want this provider’s capabilities. If price is the only priority, it is already the cheapest here.
ModelInput / 1MOutput / 1MContextOur test
Nano Banana (Gemini 2.5 Flash Image)$0.30$2.5033K
Gemini 2.5 Flash$0.30$2.501M
Gemini 3 Flash Preview$0.50$3.001M
Nano Banana 2 (Gemini 3.1 Flash Image Preview)$0.50$3.00131K
Nova 2 Lite$0.30$2.501M
R1$0.70$2.50164K

Specs

Model IDgoogle/gemini-2.5-flash-image
Modalitytext+image->text+image (input: image, text)
Context window32,768 tokens
Max output32,768 tokens
Tool / function calling
Structured output (JSON)✅ Yes
Released2025-10-07
Knowledge cutoff2025-01-31
Open weights— (hosted API only)

How to call Nano Banana (Gemini 2.5 Flash Image)

from 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-2.5-flash-image",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)
curl https://api.datallmlab.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-2.5-flash-image","messages":[{"role":"user","content":"Hello"}]}'
import 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-2.5-flash-image",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(r.choices[0].message.content);

The same key routes Nano Banana (Gemini 2.5 Flash Image) and 300+ other models — switch models by changing one string. How OpenAI-compatible APIs work.

Prompting tips for Nano Banana (Gemini 2.5 Flash Image)

Tips are derived from Nano Banana (Gemini 2.5 Flash Image)'s actual capabilities — context window, tool & JSON support, modality and price tier — not generic advice.

Open-source tools for Nano Banana (Gemini 2.5 Flash Image)

Popular open-source frameworks and agents to build with Nano Banana (Gemini 2.5 Flash Image) over the API — star counts pulled from GitHub (July 2026).

googleapis/python-genai★ 3.8K
Google Gen AI Python SDK provides an interface for developers to integrate Google's generative models into the
Official SDK
langgenius/dify★ 147.5K
Production-ready platform for agentic workflow development.
TypeScript
open-webui/open-webui★ 144.0K
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
Python
langchain-ai/langchain★ 140.8K
The agent engineering platform.
Python
microsoft/autogen★ 59.5K
A programming framework for agentic AI
Python
crewAIInc/crewAI★ 54.8K
Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewA
Python

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 (Gemini 2.5 Flash Image)

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-2.5-flash-image. 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 (Gemini 2.5 Flash Image) is served by 2 providers, requests can fail over to a healthy one automatically. See the error-code guide and failover setup.

Related reading

Gemini API: Pricing & Keys
DataLLM Lab Blog
Gemini vs Claude
DataLLM Lab Blog
How OpenAI-Compatible APIs Work
DataLLM Lab Blog

Call Nano Banana (Gemini 2.5 Flash Image) with one key

300+ models behind one OpenAI-compatible endpoint — better prices, better uptime, no subscriptions.

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Frequently asked questions

What is Nano Banana (Gemini 2.5 Flash Image)?

Gemini 2.5 Flash Image, a.k.a. It accepts image, text input with a 33K-token context window and was released on 2025-10-07. On DataLLM Lab it is callable through one OpenAI-compatible endpoint.

How much does Nano Banana (Gemini 2.5 Flash Image) cost?

On DataLLM Lab it is $0.30 per 1M input tokens and $2.50 per 1M output tokens, with cached input at $0.03/1M — cheaper than about 36% of the 309-model catalog on output price. Pay-as-you-go, no subscription.

What is the context window of Nano Banana (Gemini 2.5 Flash Image)?

33K tokens, with up to 33K max output tokens.

Is Nano Banana (Gemini 2.5 Flash Image) open source?

No open weights are published — it is available through hosted API access only.

How do I call the Nano Banana (Gemini 2.5 Flash Image) API?

Point any OpenAI SDK at https://api.datallmlab.com/v1 and set model to "google/gemini-2.5-flash-image". One DataLLM Lab key routes this model and 300+ others; no code changes beyond the base URL and model string.

What are good alternatives to Nano Banana (Gemini 2.5 Flash Image)?

Close options by price and capability include Gemini 2.5 Flash, Gemini 3 Flash Preview, Nano Banana 2 (Gemini 3.1 Flash Image Preview) — all callable with the same DataLLM Lab key.