GoogleImage generationGemini 3.1 Flash Image (Preview) — direct API: Google AI's image-generation model, one key away
Gemini 3.1 Flash Image (Preview) — direct via the ApexApi gateway
The fast Gemini 3.1 image tier, roughly half the price of Gemini 3 Pro Image. Suited to volume generation where turnaround beats maximum fidelity. Call it through ApexApi's unified, OpenAI-compatible API with one `ak-` key, alongside every other model in the catalog. Pricing is $0.072–$0.192/image per image, billed pay-per-use from your credit balance with no subscription.
Gemini 3.1 Flash Image (Preview) — direct is served through ApexApi's unified, OpenAI-compatible API. One key, one format, with smart routing and automatic failover. Provider: Google AI.
Why Gemini 3.1 Flash Image (Preview) — direct
Text-to-image generation
High-quality image generation (and image-to-image where supported) through one API.
Transparent pricing ($0.072–$0.192/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
- 131.1K tokens
- Max output
- 65.5K tokens
- Streaming
- Yes
- Tool / function calling
- —
- Vision input
- Yes
Gemini 3.1 Flash Image (Preview) — direct pricing
- It runs 1.9× cheaper than Gemini 3 Pro Image Preview, the pricier option from the same maker.
Getting started with Gemini 3.1 Flash Image (Preview) — direct
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-3.1-flash-image-preview", "prompt": "A serene mountain lake at golden hour"},
)
print(resp.json())Gemini 3.1 Flash Image (Preview) — direct use cases
What teams build with Gemini 3.1 Flash Image (Preview) — direct 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 3.1 Flash Image (Preview) — direct 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 3.1 Flash Image (Preview) — direct vs Nano Banana Pro
Compare Gemini 3.1 Flash Image (Preview) — direct 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 3.1 Flash Image (Preview) — direct vs FLUX.2 Pro
Compare Gemini 3.1 Flash Image (Preview) — direct 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 3.1 Flash Image (Preview) — direct API: FAQ
How do I call Gemini 3.1 Flash Image (Preview) — direct 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-3.1-flash-image-preview`. The API is OpenAI-compatible, so an existing OpenAI SDK works once you change the base URL and key.
How much does Gemini 3.1 Flash Image (Preview) — direct cost on ApexApi?
$0.072–$0.192/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 is the context window for Gemini 3.1 Flash Image (Preview) — direct?
131,072 tokens. It can return up to 65,536 tokens in a single response.
What should I use instead of Gemini 3.1 Flash Image (Preview) — direct?
From the same maker, Gemini 2.5 Flash Image costs less for lighter work and Gemini 3 Pro Image Preview is the step up when this one falls short. Switching is one string: both run on the same endpoint and the same key, so there is nothing to re-integrate.
Ready to build with Gemini 3.1 Flash Image (Preview) — direct?
One API key. Every major AI model. Pay only for what you use.
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