Nano Banana (Gemini 2.5 Flash Image) API33K context
Gemini 2.5 Flash Image, a.k.a.
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
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):
| Model | Input / 1M | Output / 1M | Cache read | Cache write | Context |
|---|---|---|---|---|---|
| Nano Banana (Gemini 2.5 Flash Image) | $0.30 | $2.50 | $0.03 | $0.08 | 33K |
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
| Workload | Tokens in / out (monthly) | Est. cost |
|---|---|---|
| Support chatbot | 40M / 12M | $42.00 |
| RAG / knowledge base | 200M / 20M | $110 |
| Coding agent | 80M / 25M | $86.50 |
| Batch extraction | 150M / 8M | $65.00 |
| Content generation | 20M / 40M | $106 |
Estimate your own monthly cost
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
| Model | Input / 1M | Output / 1M | Context | Our test |
|---|---|---|---|---|
| Nano Banana (Gemini 2.5 Flash Image) | $0.30 | $2.50 | 33K | — |
| Gemini 2.5 Flash | $0.30 | $2.50 | 1M | — |
| Gemini 3 Flash Preview | $0.50 | $3.00 | 1M | — |
| Nano Banana 2 (Gemini 3.1 Flash Image Preview) | $0.50 | $3.00 | 131K | — |
| Nova 2 Lite | $0.30 | $2.50 | 1M | — |
| R1 | $0.70 | $2.50 | 164K | — |
Specs
| Model ID | google/gemini-2.5-flash-image |
| Modality | text+image->text+image (input: image, text) |
| Context window | 32,768 tokens |
| Max output | 32,768 tokens |
| Tool / function calling | — |
| Structured output (JSON) | ✅ Yes |
| Released | 2025-10-07 |
| Knowledge cutoff | 2025-01-31 |
| 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)
- Be explicit and show the shape of the answer. Spell out format, tone and constraints up front, and include one short example of the output you want — Nano Banana (Gemini 2.5 Flash Image) follows concrete instructions better than abstract ones.
- 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 (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).
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
Call Nano Banana (Gemini 2.5 Flash Image) with one key
300+ models behind one OpenAI-compatible endpoint — better prices, better uptime, no subscriptions.
Get an API keyCompare pricingFrequently 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.