Rendergrid vs PixExtender

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

Rendergrid compared with PixExtender
Detail	Rendergrid	PixExtender
What it does	AI image generation API with ready-made Python and Node.js client libraries	AI Image Extender - Expand Images to Any Size
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Freemium
Pricing	$0.02 per image for Nano Banana 2.1 at 1K resolution, $0.02 for GPT Image 2, $0.04 for Nano Banana Pro at 1K, $0.07 at 4K. Pricing varies by model and resolution. No subscription required; users prepay balance in USDT.	Free credits on signup. Monthly subscriptions: Basic $8.3/month (2400 Credits, up to 1200 images, max 2000x2000), Creator $20.8/month (6600 Credits, up to 3300 images, max 3000x3000), Master $41.6/month (14400 Credits, up to 7200 images, max 4096x4096). Yearly plans: Basic $99/year, Creator $249/yea
Key features	Automatic idempotency key management Automatic polling with configurable intervals Retry logic for dropped connections and rate limiting Webhook signature verification Decimal and string representations for financial amounts Exception classes for error handling Support for Python 3.11+ and Node.js 22+ TypeScript support	Seamless image expansion with AI-generated matching backgrounds Expand images up to 4096x4096 pixels without quality loss Batch process up to 20 images at once with consistent results Platform presets for Instagram, Pinterest, YouTube, Facebook, LinkedIn, Twitter Custom aspect ratio and dimension selection Support for JPG, PNG, and WEBP formats Original image content stays pixel-for-pixel untouched Content-aware outpainting preserves subject position Export ready-to-use files in exact dimensions
What makes it different	Refund for failed requests automatically credited to balance Up to 70% cheaper than official Google and OpenAI prices No subscription or monthly fees, pay-as-you-go model Libraries handle boilerplate code automatically	Seamless, natural results that look like original photos without visible seams or stretched pixels Batch processing of up to 20 images with one-click consistency No design skills or complex tools required Free credits for new users to start immediately Designed for multiple use cases: creators, e-commerce, photographers, and everyday fixes
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	24 −1 (down) since last check
Trust Flow (Majestic)	0	5
Citation Flow (Majestic)	12	26
Referring domains (Majestic)	1	97

5 details filled in for both companies.

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