Ox Alpha vs Responsive Tool

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

Ox Alpha compared with Responsive Tool
Detail	Ox Alpha	Responsive Tool
What it does	Free stealth reasoning model for coding, agentic work, and multimodal workflows available through OpenRouter	Free responsive website checker for mobile, tablet and desktop
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	$0 per million input tokens, $0 per million output tokens during preview; TryOXAlpha hosted chat offers 5 free guest replies, 15 additional replies after account creation, and 100 AI replies for $4.99 one-time purchase	Not given
Key features	1,048,576-token context window Multimodal inputs: text, image, and video Tool calling and structured outputs Configurable reasoning efforts: low, high, and max OpenAI-compatible API endpoint Supported through OpenRouter model ID stealth/ox-alpha 131,072 output tokens maximum	Test multiple device viewports simultaneously Real CSS viewport rendering Share setup links Custom pixel width testing No installation required Sync scroll across panes Browser-based with no account needed
What makes it different	1M token context window for repository-scale coding tasks Multimodal support combining code with screenshots and diagrams Free preview pricing during stealth release Tool calling and structured output for agentic workflows	Compare multiple real device widths side by side instead of switching one at a time Faster than DevTools for checking several device sizes at once Entirely browser-based with no setup, signup or download Built and maintained by one developer in the open
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 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	1
Citation Flow (Majestic)	17	25
Referring domains (Majestic)	11	14

4 details filled in for both companies.

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