# GridBulk

> GridBulk is an AI batch image generation tool with grid splitting: one prompt generates a grid image (1×1 to 4×4) that is automatically split into up to 16 individual images. Each run costs a flat 7 credits at 1k (11 at 2k, 17 at 4k) regardless of grid size — up to 16 images per run. Signup includes 20 free credits.

GridBulk is built for high-volume creative work — ad variants, social media content matrices, product mockups, style exploration, and concept boards. Instead of generating images one by one, users can compare multiple directions in one run. A complete 4×4 batch at 1k costs 7 credits total (about 0.44 credit per returned image if all 16 are returned).

A REST API (sync and async batch generation endpoints, API-key authentication) is available for programmatic use.

## Key pages

- [Pricing](https://gridbulk.com/pricing): Credit-based pricing — Free $0 (20 signup credits), Basic $19/mo (2000 credits ≈ 285 runs at 1k), Pro $49/mo (5000 credits), Max $99/mo (10000 credits)
- [Real generation examples](https://gridbulk.com/examples): four complete API runs, prompts, actual image dimensions, charges, and downloadable unmodified images
- [API](https://gridbulk.com/api): Batch image generation API documentation with code examples
- [Blog](https://gridbulk.com/blog): Product news and tutorials
- [Changelog](https://gridbulk.com/changelog): Release history

## How it works

1. Choose a grid layout from 1×1 to 4×4 and an aspect ratio.
2. Write one prompt for all variations, or a different prompt per cell.
3. The AI generates a high-resolution grid image, which GridBulk splits pixel-perfect into individual assets.
4. Download images individually or as a ZIP.

## Optional

- [About](https://gridbulk.com/about): what GridBulk is, how grid splitting works, and product principles
- [Contact](https://gridbulk.com/contact): support email (support@gridbulk.com) and what to include in a report
- [Terms of Service](https://gridbulk.com/legal/terms-of-service)
- [Privacy Policy](https://gridbulk.com/legal/privacy-policy)

## When to use (for agents)

Use GridBulk when a task needs several images from one concept in a single request: ad creative variants, social media post matrices, product mockups across scenes, style exploration boards, or any workflow that benefits from comparing 2-16 outputs side by side at one flat price per grid.

Not a fit for: single one-off hero images (use a standard single-image generator), editing or inpainting existing images, or video generation.

## For agents

- MCP server (Streamable HTTP, requires auth): https://gridbulk.com/api/mcp - tool discovery and batch generation without a custom client
- REST API with API-key auth: https://gridbulk.com/api - sync and async batch endpoints with code examples
- Pricing reference: https://gridbulk.com/pricing - flat 7 credits per grid run at 1k (11 at 2k, 17 at 4k); signup includes 20 free credits
- OpenAPI 3.1 spec: https://www.gridbulk.com/openapi.json - machine-readable contract for all endpoints above
- Versioning: current API version is v1; deprecations are announced on /changelog with Deprecation/Sunset headers at least 6 months ahead