generate_images
Generate multiple images in parallel from text prompts using Gemini, OpenAI, or Grok models. Customize aspect ratio, resolution, and style presets.
Instructions
Generate multiple images in parallel. Supports Gemini and OpenAI models — pass the model param to choose. Returns the generated images and any accompanying text. Full-resolution images are viewable in the browser viewer.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| prompts | Yes | Array of text prompts, one per image to generate (1-8 images) | |
| aspect_ratio | No | Aspect ratio for all generated images | 1:1 |
| image_size | No | Image resolution | 1K |
| style | No | Optional style preset to apply. When set, the style's prompt prefix is prepended and its default aspect ratio is used (unless you explicitly set one). Available styles: • neo-brutalist — Neo-brutalist minimalist magazine editorial. Bold oversized typography, cream/black/terracotta palette, halftone textures, visible grid lines, asymmetric layout. Think Emigre meets Swiss brutalism. • retro-futuristic-arcade — Retro-futurist infographic style. 1960s Space Age optimism meets 1980s arcade aesthetics. Cathode blue, warm amber, salmon red, warm green palette. CRT scanlines, atomic-age geometry, pixel-grid accents. Great for diagrams, system overviews, and technical illustrations. • fractal-arcade — Geometric dithered fractal style. All shading via dithering patterns and geometric cross-hatch grids — no smooth gradients. Fractal backgrounds (Sierpinski, hexagonal tessellations, recursive diamonds), low-poly faceted subjects, retro CRT palette. • duval-software-infographic — Duval Software's clean technical infographic for architecture diagrams, system flows, and data pipelines. Dark navy background, cyan/electric blue glowing connection lines, geometric nodes, professional and precise. | |
| model | No | Model to use. Available: 'gemini-3.1-flash-image' (Gemini 3.1 Flash Image), 'gemini-2.5-flash-image' (Gemini 2.5 Flash Image), 'gpt-image-1' (GPT Image 1 (OpenAI)), 'gpt-image-2' (GPT Image 2 (OpenAI)), 'grok-imagine' (Grok Imagine (xAI)). Default: 'gpt-image-2'. Set DEFAULT_IMAGE_MODEL env var to change the default. Provider tradeoffs: grok-imagine is fastest and cheapest; gemini is mid-quality with the best price/performance ratio (free tier available); gpt-image-2 is highest quality but slower and more expensive. Gemini models fall back to free tier on billing errors. OpenAI requires OPENAI_API_KEY. Grok requires XAI_API_KEY. |