Feature
Image Generation
One interface, multiple models. Describe what you want; the model generates it. Toggle image generation on in the chat composer and see cost estimates before each generation.
How it works
Image generation in just4o.chat is a universal tool—one interface, multiple models from different providers. No matter which chat model you're using (GPT, Claude, Gemini, or Grok), you can ask for images and the system routes your request to the LLM which creates the prompt for your pre-chosen image model configured on the account screen.
Toggle image generation on in the chat composer. When enabled, the model can call the generate_image tool to create images from your prompts. You can pick your preferred model (GPT Image, Gemini 2.5 Flash Image, Gemini 3 Pro Image, Imagen 4 Fast, Imagen 4, Imagen 4 Ultra, Grok Imagine, or Grok Imagine Pro), choose aspect ratio, and for some models adjust quality or resolution. You'll clearly see cost estimates before each generation.
Models and credits
Each generated image costs a number of image credits depending on the model and settings. 25 premium credits equal 1 image credit for conversion purposes. Limits per tier: Explorer 0; Builder 5; Studio 15; Aurora 30; Pro 75 image credits per month.
Images appear in Just4o.chat Files under Generations. Check Account → Image Generation for your default model, aspect ratio, and recent generations.