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Context Engine vs Alexein

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

Context Engine compared with Alexein
DetailContext Engine logo Context EngineAlexein logo Alexein
What it doesOne memory for your AI agents and your team Memory for AI agents and the people using them
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree: $0 forever with 1 agent per engine (up to 3 when friends refer), 1 GB memory. Pro: $12/month or $99/year per engine with 10 agents and 25 GB memory. Unlimited: $39/month or $299/year per engine with unlimited agents and 100 GB memory. Enterprise: from $6,000/year per install on your own server Free: 10,000 events and 1,000 retrievals per month. Starter: $13/month for 50,000 events and 5,000 retrievals. Pro: $100/month for 500,000 events and 50,000 retrievals. Scale: $399/month for 2,500,000 events and 250,000 retrievals. Enterprise: Custom pricing.
Key features
  • Connect ChatGPT, Claude, Claude Code and Cursor with a few clicks
  • AI tools save decisions, notes, people, customers and files
  • Search with semantic understanding, not just exact words
  • Automatic summaries by day, week and month
  • Link related memories automatically
  • Prevent duplicate memories with deduplication
  • Export all data as Markdown and JSON
  • Separate engines for clients with no data crossing
  • Fine-grained access control (read or read-and-save)
  • Full history tracking for every change
  • Search memory with dates and sources
  • Memory history and item versions
  • Data erasure with receipt
  • Correct and edit facts
  • Works with Claude, ChatGPT, Cursor and GitHub Copilot
  • Integrates with LangGraph, CrewAI and OpenAI Agents SDK
  • Connect to Slack, Notion, Linear, Jira and GitHub
  • Hosted MCP server
  • Item expiry
What makes it different
  • Keeps AI tools from forgetting context between sessions
  • Data isolated per engine with no sharing between customers
  • Fully portable—export anytime or delete permanently
  • Pay per engine, never per person added to team
  • Reduces token usage while improving context accuracy
  • Privacy and data control built in, not bolted on
  • Nothing is dropped when limits are reached
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)14 −1 (down) since last check10 +7 (up) since last check
Trust Flow (Majestic)130
Citation Flow (Majestic)2812
Referring domains (Majestic)323

5 details filled in for both companies.

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