Unium™ vs Synero

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

Unium™ compared with Synero
Detail	Unium™	Synero
What it does	Shared AI chat for couples, friends and family	Ask ChatGPT, Claude, Gemini and Grok at the same time, get one combined answer, and see where they agree and disagree
Stage	Not given	Not given
Founded	Not given	Not given
Based in	GB	US
Pricing model	Free trial	Freemium
Pricing	Free for 2 days (includes Balanced model, memory, voice notes and images, up to 5 people, no card needed). Together $10/month with balanced model, memory, voice notes, image generation, and extended model choice. Together Plus $20/month includes up to 2.2× the usage of Together. Household $40/month	Free: 3 questions with no card required. Synero Pro: $10/month including $10 of usage credits. Credit packs available at $5, $10, or $25 with no subscription required. Each question costs on the order of a few cents to about a dime for a Council question across four models.
Key features	Shared chats where multiple people can join the same conversation Switch between AI models without losing context Memory across chats Voice notes and image generation Private chats alongside shared ones Web search integration Add up to 10 people to one subscription Available on iPhone, Android and web Access to multiple AI models including GPT-6 and Claude Opus 5.5 No data training on user conversations	Ask up to four AI models simultaneously Agreement scoring from 0 to 100 Combined consensus answer Points of disagreement highlighted File and image uploads Follow-ups and answer regeneration Access to 22 AI models Preset configurations REST API and MCP server
What makes it different	Multiple people in one chat instead of separate conversations One subscription covers everyone on the account with no additional charges Switch AI models without losing memory or context AI facilitates discussion by asking both perspectives before suggesting compromises Chats are shared by default but can be made private	Consensus answer synthesis from four independent models Transparent agreement and disagreement scoring All four major AI providers in one interface Lower cost than individual subscriptions Data privacy with no model training
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)	20 +3 (up) since last check	11 no change since last check
Trust Flow (Majestic)	0	1
Citation Flow (Majestic)	9	25
Referring domains (Majestic)	2	26

6 details filled in for both companies.

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