GoogleMediumUltra

Gemini 3 Pro Image Preview

Google's premium image generation model within the Gemini 3 Pro family. Generates high-quality images directly in chat with the highest fidelity among Gemini image models. Image output tokens are priced at 10x text output tokens.

500 credits

per request

Premium image generation quality

Native image generation in chat responses

Text and image output in single response

10x pricing for image vs text output tokens

Advanced multimodal reasoning

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txt

Model Specifications

Context Window

tokens

Max Output

66K

tokens

Training Cutoff

January 2025

Compatible SDK

OpenAI, Google AI

Capabilities

Vision

Function Calling

Streaming

JSON Mode

System Prompt

Image Generation

Token Pricing (per 1M tokens)

Token Type	Credits	USD Equivalent
Input Tokens	2,000	$2.00
Output Tokens	12,000	$12.00
🖼Image Output Tokens	120,000	$120.00

* 1 credit ≈ $0.001 (actual charges may vary based on usage)

Quick Start

curl -X POST "https://api.core.today/llm/gemini/v1beta/openai/chat/completions" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer cdt_your_api_key" \
  -d '{
  "model": "gemini-3-pro-image-preview",
  "messages": [
    {
      "role": "user",
      "content": "Explain the principles of color theory and how they apply to digital design."
    }
  ],
  "max_tokens": 2000,
  "temperature": 0.7
}'

Parameters

Parameter	Type	Required	Default	Description
`messages`	array	Yes	-	Array of message objects (OpenAI format)
`temperature`	float	No	1	Sampling temperature (0-2)
`top_p`	float	No	0.95	Nucleus sampling parameter
`max_tokens`	integer	No	-	Maximum output tokens
`stream`	boolean	No	false	Enable Server-Sent Events streaming

Examples

Text Chat

Standard text conversation using Pro capabilities

curl -X POST "https://api.core.today/llm/gemini/v1beta/openai/chat/completions" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer cdt_your_api_key" \
  -d '{
  "model": "gemini-3-pro-image-preview",
  "messages": [
    {
      "role": "user",
      "content": "Explain the principles of color theory and how they apply to digital design."
    }
  ],
  "max_tokens": 2000,
  "temperature": 0.7
}'

Image Generation

Generate a high-quality image through natural language

curl -X POST "https://api.core.today/llm/gemini/v1beta/openai/chat/completions" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer cdt_your_api_key" \
  -d '{
  "model": "gemini-3-pro-image-preview",
  "messages": [
    {
      "role": "user",
      "content": "Generate a photorealistic image of a futuristic city skyline at golden hour, with flying vehicles and vertical gardens on skyscrapers."
    }
  ],
  "max_tokens": 4096
}'