One family. Every available model.

Cheap Gemini API: Models & Pricing

Compare Gemini language models for text, vision and long-context work. Choose a model and check token prices before connecting through the Gemini-native or OpenAI-compatible API.

Get an API key API key setup guide

Gemini API prices

OmniaKey price

Gemini 4 Argon

gemini-4-argon

Context: 1M

USD / 1M tokens

Input: $0.8
Output: $4
Cached input: $0.04

Gemini 3.1 Pro Preview

gemini-3.1-pro-preview

Context: 1M

USD / 1M tokens · <=200K

Input: $0.8
Output: $4.8
Cached input: $0.08

USD / 1M tokens · 200K-1M

Input: $1.6
Output: $7.2
Cached input: $0.16

Gemini 2.5 Pro

gemini-2.5-pro

Context: 1M

USD / 1M tokens · <=200K

Input: $0.5
Output: $4
Cached input: $0.05

USD / 1M tokens · 200K-1M

Input: $1
Output: $6
Cached input: $0.1

Gemini 3.8 Flash

gemini-3.8-flash

Context: 1M

USD / 1M tokens

Input: $0.45
Output: $2.25
Cached input: $0.045

Gemini 3.7 Flash

gemini-3.7-flash

Context: 1M

USD / 1M tokens

Input: $0.45
Output: $2.25
Cached input: $0.045

Gemini 3.6 Flash

gemini-3.6-flash

Context: 1M

USD / 1M tokens

Input: $0.45
Output: $2.25
Cached input: $0.045

Gemini 3.5 Flash-Lite

gemini-3.5-flash-lite

Context: 1M

USD / 1M tokens

Input: $0.255
Output: $2.125
Cached input: $0.0255

Gemini 2.5 Flash

gemini-2.5-flash

Context: 1M

USD / 1M tokens

Input: $0.255
Output: $2.125
Cached input: $0.0255

Gemini 2.5 Flash-Lite

gemini-2.5-flash-lite

Context: 1M

USD / 1M tokens

Input: $0.085
Output: $0.34
Cached input: $0.0085

These are OmniaKey catalog prices in USD. Availability and permitted models depend on your API key. Review the model details and tool fees before sending a paid request.

How Gemini API prices are calculated

Input, output and cached input are separate meters. Check every context tier for your expected prompt length. Tool surcharges, where applicable, are listed separately.

Tool fees

From model selection to your first request

Choose a model

Open a model to check its capabilities, supported parameters and exact API ID.

Configure your key

Pair your OmniaKey key with the OmniaKey API URL. The setup guide includes a connection check.

Connect your application

Use the protocol documented for your model. Image and video requests run as asynchronous tasks.

Read the API documentation

Questions before you connect

How do I choose a cheap Gemini API?

Compare the total cost of your workload across models in this family. Account for output, cache, resolution and duration where relevant. The lowest starting price does not always give the lowest cost for an acceptable result.

Is an OmniaKey key an official Google key?

No. OmniaKey issues its own key for the OmniaKey endpoint and account balance. A key issued by the model provider uses that provider’s endpoint and billing. The setup guide links to both routes.