GridBulk vs RapZap

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

GridBulk compared with RapZap
Detail	GridBulk	RapZap
What it does	AI batch image generation with grid splitting: one prompt, up to 16 images, one credit	AI rap video generator that turns photos into performance clips
Stage	Startup	Startup
Founded	2026	2026
Based in	Not given	Not given
Pricing model	Freemium	Paid
Pricing	Free plan includes 20 credits on signup with the first generation free. Basic: $19/month for 2,000 credits/month (≈32,000 images with 4×4 grid). Pro: $49/month for 5,000 credits/month (≈80,000 images with 4×4 grid). Max: $99/month for 10,000 credits/month (≈160,000 images with 4×4 grid).	$8.99 per video (one-time payment, no subscription)
Key features	Generate up to 16 images in a single 4×4 grid Grid splitting into individual pixel-perfect assets REST API with sync and async endpoints MCP server for AI agent integration Reference image support for style guidance Runs on Google Gemini and OpenAI GPT Image models Dashboard history with searchable generations	Five fixed templates: Hotel Lobby, Bulin 47, Zombie Couple, Rumpelstiltskin, Tiny Desk Lip-sync animation matched to trend audio Upload one to five photos per video 720p MP4 download 7-day download window for finished videos Automatic credit return on failed renders Photos deleted within 24 hours Private video links per browser session Video aspect ratios match platform feeds
What makes it different	One credit per grid instead of per image, reducing cost per image to 1/16 for 4×4 grids Contact-sheet view for side-by-side comparison of all results API and MCP server built for AI agents as first-class users Independent and self-funded operation First generation completely free with 20 signup credits	Fixed templates with no prompt required, unlike general video models One flat price of $8.99 per video with credits returned on failure Lip-sync timed to trend sounds for better mouth matching than generic models No subscription, no account, no card data stored by RapZap Videos framed for specific platforms and ready to post
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 +1 (up) since last check	3 no change since last check
Trust Flow (Majestic)	0	5
Citation Flow (Majestic)	0	23
Referring domains (Majestic)	0	18

7 details filled in for both companies.

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