GridBulk vs Checksub

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 Checksub
Detail	GridBulk	Checksub
What it does	AI batch image generation with grid splitting: one prompt, up to 16 images, one credit	AI-powered subtitle and dubbing generator for video and audio content localization
Stage	Startup	Established
Founded	2026	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
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).	Free trial with 1 hour of video translation credits. Paid plans: Junior $18/month (2 hours credits) or $12/month annually (24 hours credits); Starter $59/month (5 hours credits) or $48/month annually (60 hours credits); Enterprise from $299/month with custom credits. Credits are consumed at differen
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	Auto-subtitles generation using advanced AI Translation in over 200 languages AI voice cloning in 30 languages Voice isolation to separate dialogue from background audio Subtitle styling and animation customization Script to subtitles conversion with synchronization Burn-in subtitle export and subtitle file formats Lip-sync technology (Beta) Advanced online editor for subtitle and dubbing refinement YouTube channel integration and social media optimization
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	6 years of development focused specifically on subtitling quality and accuracy Translation workflow designed specifically for subtitles rather than generic translation Preserves original audio background and ambient sounds while replacing only vocals Immediate subtitle generation with optional post-editing for rapid deployment
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)	Not checked yet no change since last check	54 no change since last check
Trust Flow (Majestic)	0	16
Citation Flow (Majestic)	0	35
Referring domains (Majestic)	0	545

6 details filled in for both companies.

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