Mainbrella vs Referee.chat

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

Mainbrella compared with Referee.chat
Detail	Mainbrella	Referee.chat
What it does	Cloud computers for AI agents on Cloudflare	An AI panel debates your goal; a referee rules on re-checkable evidence
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Freemium
Pricing	Prepaid compute at $0.02 per compute-unit hour. Minimum $5 top-up with no monthly subscription. Machine rates: Lite $0.02/hour, Small $0.12/hour, Medium $0.20/hour, Large $0.32/hour, XL $0.56/hour. Open source platform available via GPLv3 license for self-hosting on Cloudflare (Workers Paid plan sta	Free: $1.00 starting credit once. Credit plans from $10 top-up with no expiration. Your own key: 5% infrastructure fee after the first $5.00 of usage.
Key features	Linux workspace with command execution, file operations, and tool installation HTTP API, SSH, and browser terminal access Account-owned lifecycle controls and explicit ownership Five machine sizes from Lite to XL Saved workspaces with snapshot stop and resume Prepaid balance with no monthly subscription Shared accounts and billing infrastructure Hosted apps including Linux computers, Vibe coding, and Voice agents Custom runtime images and language support Outbound internet and ephemeral storage	Panel of up to six AI models from different vendors Referee rules on re-checkable evidence only Searches academic databases: arXiv, OpenAlex, Crossref, Europe PMC Executes Python code to verify claims Customizable acceptance standards Matches pause and resume without losing work Shared ledger prevents re-derivation Spending limit per match
What makes it different	Open-source platform that can be self-hosted on own Cloudflare account Built-in accounts, billing, and metering so developers don't start from scratch Simple prepaid model with no monthly commitment Direct founder contact for product feedback and integration questions Account-owned HTTP workflow with automatic cleanup	Referee decides on evidence, not argument quality Panel from different vendors fails in different directions Stuck is a targeted question, not model thrashing Cost grows with ledger, not round count Published matches become research record
Community votes	0	0
DR (Domain Rating by Ahrefs)	23 +1 (up) since last check	2 no change since last check
Trust Flow (Majestic)	5	0
Citation Flow (Majestic)	32	13
Referring domains (Majestic)	69	31

5 details filled in for both companies.

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