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Gemini 3.1 Flash Image Preview model details and integration guide
Gemini 3.1 Flash Image Preview is positioned for image workloads with flat per-call pricing on HeyWaii.
Page last updated: April 27, 2026
Overview
Gemini 3.1 Flash Image Preview is part of the HeyWaii API Market catalog for visual generation workflows that need clear output pricing.
This model is configured with per-call billing, so cost is easy to estimate before sending the request.
It is available in the catalog with model positioning and a public sale price from the current pricing update.
Model explainer
Gemini 3.1 Flash Image Preview is a image generation API model page built to explain capability fit, real workflow value, and integration friction.
Gemini 3.1 Flash Image Preview is strongest around Simple image pricing, Visual generation, Fast creative iteration, which makes it a practical option for product-facing workflows.
If your workload is close to Creative image apps, Marketing assets, Visual prototyping, this page should be enough to start model selection and pre-rollout testing.
From a modality angle, Gemini 3.1 Flash Image Preview fits Image generation, Per image workflows and can be validated on one core use case before wider rollout.
Recent updates
Related use-case hubs
Best for
Use case 01
Creative image apps
Use case 02
Marketing assets
Use case 03
Public pricing and price advantage
Public sell-side pricing is $0.8/image, making it easier to test cost, stage rollouts, and estimate volume budgets.
HeyWaii public price
image
$0.8/image
Official input
1M tokens
\
Official output
1M tokens
$3.00 / 1M tokens
73% lower
OpenRouter output
Model capability metrics
Category
image
Billing mode
Per call
Relay access
Catalog only
Public price
$0.8/image
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Catalog note
Gemini 3.1 Flash Image Preview is currently positioned more as a catalog and pricing page for selection, budgeting, and task planning.
Before integrating it into a live generation flow, define your core task, I/O structure, and budget ceiling first.
Selection guidance
Low-friction API access for image generation workflows.
Good for model evaluation, pricing review, and rollout planning.
Per-call billing is easier to control for one-off tasks.
FAQ
What is Gemini 3.1 Flash Image Preview actually good for?
Gemini 3.1 Flash Image Preview is currently best suited for Creative image apps, Marketing assets, Visual prototyping. Before production rollout, validate it on your highest-value task first.
How much does Gemini 3.1 Flash Image Preview cost on HeyWaii?
Gemini 3.1 Flash Image Preview is listed here at $0.8/image, which makes cost modeling and staged rollout planning much easier before full deployment.
Can I use Gemini 3.1 Flash Image Preview with an OpenAI-compatible stack?
If direct relay access is not enabled yet, use this page for model selection and pricing review first, then scope the integration path around your target workflow.