Gemini 2.5 Flash Image API: fal.ai's image-generation model, one key away
Gemini 2.5 Flash Image via the ApexApi gateway
The original Nano Banana, Gemini 2.5 Flash Image. Cheapest of the Google image tiers and still capable for straightforward generation. Call it through ApexApi's unified, OpenAI-compatible API with one `ak-` key, alongside every other model in the catalog. Pricing is $0.047/image per image, billed pay-per-use from your credit balance with no subscription.
Gemini 2.5 Flash Image is served through ApexApi's unified, OpenAI-compatible API. One key, one format, with smart routing and automatic failover. Provider: fal.ai.
Why Gemini 2.5 Flash Image
Text-to-image generation
High-quality image generation (and image-to-image where supported) through one API.
Transparent pricing ($0.047/image)
Pay per image from your credit balance. Failed generations aren't billed.
OpenAI-compatible
Drop-in with any OpenAI SDK. Change the base URL and key, keep your code.
Specifications
- Modality
- image
- Context window
- —
- Max output
- —
- Streaming
- —
- Tool / function calling
- —
- Vision input
- Yes
Gemini 2.5 Flash Image pricing
- That makes it the 12th cheapest of the 29 image models we serve, ranked on output price.
- It runs 3.8× cheaper than Gemini 3 Pro Image Preview, the pricier option from the same maker.
Getting started with Gemini 2.5 Flash Image
OpenAI-compatible. Point your client at ApexApi, swap your key, and call it. No new SDK to learn.
import requests
resp = requests.post(
"https://api.apexapi.dev/v1/images/generations",
headers={"Authorization": "Bearer <YOUR_APEXAPI_KEY>"},
json={"model": "google/gemini-flash-image", "prompt": "A serene mountain lake at golden hour"},
)
print(resp.json())Gemini 2.5 Flash Image use cases
What teams build with Gemini 2.5 Flash Image on ApexApi.
Marketing & creative
On-brand visuals, ad creative, and product imagery at scale.
In-product generation
Generate images inside your app from user prompts.
Prototyping
Rapid concept art and design exploration.
Gemini 2.5 Flash Image vs other models
How it compares, and on ApexApi you can switch between any of them with a single string change, same key, same endpoint.
Gemini 2.5 Flash Image vs Nano Banana Pro
Compare Gemini 2.5 Flash Image against this model on price, capabilities, and latency. A/B them with a single key on ApexApi.
Learn more about Nano Banana Pro API →Gemini 2.5 Flash Image vs FLUX.2 Pro
Compare Gemini 2.5 Flash Image against this model on price, capabilities, and latency. A/B them with a single key on ApexApi.
Learn more about FLUX.2 Pro API →Gemini 2.5 Flash Image API: FAQ
How do I call Gemini 2.5 Flash Image through ApexApi?
Create an ApexApi key, point your client at https://api.apexapi.dev/v1, and POST to /v1/images/generations with the model set to `google/gemini-flash-image`. The API is OpenAI-compatible, so an existing OpenAI SDK works once you change the base URL and key.
How much does Gemini 2.5 Flash Image cost on ApexApi?
$0.047/image, billed per image with no subscription or minimum. The exact figure is shown before you generate, so nothing is charged against a price you have not seen.
What should I use instead of Gemini 2.5 Flash Image?
From the same maker, Gemini 3.1 Flash Image is the step up when this one falls short. Switching is one string: it runs on the same endpoint and the same key, so there is nothing to re-integrate.
Ready to build with Gemini 2.5 Flash Image?
One API key. Every major AI model. Pay only for what you use.
Get your API key, free to start