Mnemosphere vs You.com

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Entry price: Mnemosphere from $25/mo, You.com from $0.005/request — different billing units, so no direct winner
Free plan: Only You.com (Mnemosphere has paid plans only)
Public API: You.com has one; not confirmed by us for Mnemosphere
Higher Trust score: You.com — 95 vs 74 for Mnemosphere
Best fit: Mnemosphere: Researchers comparing how different models answer the same prompt · You.com: Agent and RAG builders who need a live web index with citations through an API or MCP

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

MnemosphereOne workspace to run the same prompt across GPT, Claude, and Gemini side by side, with mindmaps and notes.

You.comWeb search, content extraction and research APIs for grounding AI agents, with a sign-in chat product kept behind the front door.

Side by side

Fact	Mnemosphere	You.com
Category	Multi-model Chat Aggregators	AI Search & Answer Engines
Pricing model	Paid	Freemium
Starts at	$25/mo	$0.005/request
Public API	Not confirmed	Yes
Trust score	74 / 100	95 / 100
Platforms	Web	Web, API
Company	Mnemosphere	SuSea, Inc.
Last verified	Oct 15, 2026	Sep 6, 2026

What our research says

Mnemosphere

Mnemosphere is built for people who already compare model outputs by hand and want that workflow in one place, with mindmaps and note-taking layered on top of raw chat. There is no free way to try it beyond the refund window, which is a real barrier compared with aggregators that offer a free tier.

Pros

Runs one prompt across multiple frontier models in parallel
Generates mindmaps directly from conversations
Includes a highlighter/notes layer and YouTube-video intelligence features

Cons

No free tier, only a paid plan with a refund window
Message caps apply even on the entry Pro plan
No API or platform details beyond the web app

You.com

Treat You.com as an API vendor now: the homepage, pricing and about pages are all about search, extraction and research endpoints for agents, with a free MCP allowance that lets you try the index without an account. The per-call prices are plain and the research tiers go deep enough to replace a scraping pipeline, but the consumer chat that the brand was known for has retreated behind sign-in with no visible plan, so anyone arriving for a ChatGPT alternative should look at Perplexity instead.

Pros

100 free Web Search queries a day via MCP with no key, account or card
Published per-1,000-call prices across search, contents, answer and research endpoints (15 October 2026)
Research tiers from Lite to Frontier cover quick lookups through background deep dives
Enterprise options with zero data retention, SOC 2 and custom QPS

Cons

The consumer chat product has no public plans page; /plans returns 404 and /chat redirects to sign-in
Deep research tiers are expensive per call and only make sense in volume
FAQ entries on credit expiry and volume discounts are present but empty on the pricing page
No desktop or mobile apps linked from the current site

Which one fits

Choose Mnemosphere if you need

Researchers comparing how different models answer the same prompt
Users who want mindmap summaries of long chat threads
Structured critique of AI-generated answers

Choose You.com if you need

Agent and RAG builders who need a live web index with citations through an API or MCP
Teams that want deep, multi-step research calls priced per request rather than per seat
Enterprises that need zero data retention and SOC 2 on their search layer