LLMnesia vs Web4 Browser

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

LLMnesia compared with Web4 Browser
Detail	LLMnesia	Web4 Browser
What it does	Search your AI chat history across ChatGPT, Claude, Gemini and more, locally and privately	AI antidetect browser and multi-account workspace with true-to-device browser identity
Stage	Startup	Not given
Founded	2026	Not given
Based in	Not given	HK
Pricing model	Freemium	Freemium
Pricing	Free: local search, history import, auto-capture, MCP connection. Vault: £8/month or £88/year (billed annually with one month free, equivalent to £7.33/month). Plus tax.	Free plan includes 3 browser environments with no team members. Starter at $9/month provides 15 environments. Small Team at $19/month includes 1 team member and 55 environments. Popular at $39/month includes 2 team members and 125 environments. Scale Team at $69/month includes 4 team members and 250
Key features	Search across 15 AI platforms with semantic search Auto-capture new conversations automatically in background Save individual lines as reusable memories Star conversations for easy retrieval Filter results by AI platform or date Local MCP connection for Claude Desktop and Cursor Export conversations in portable format End-to-end encrypted sync across devices with Vault Vault web app beta for searching on phone and desktop	Isolated browser profiles with persistent identity and session data Real-device fingerprinting and AI environment modeling Per-profile proxy and network configuration Browser automation with visual workflows and headless execution Team permissions, roles, and activity logging AI browser workflows and MCP skill integration Multi-environment grouping and workspace organization Profile template copying and batch creation
What makes it different	Completely local-first: free search index stays in your browser, nothing sent to servers No account required for core features Spans all your AI tools in one searchable interface Retrieves conversations even after they're deleted from original platforms Lightweight design with minimal browser performance impact	Real-device signals and AI environment modeling instead of manual parameter mixing Isolated execution boundaries with team-level access control and activity logging Unified workspace for profiles, proxy routing, automation, and team handoffs
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)	19 no change since last check	44 no change since last check
Trust Flow (Majestic)	3	8
Citation Flow (Majestic)	26	26
Referring domains (Majestic)	43	54

5 details filled in for both companies.

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