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Alexein vs Shark Magic

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

Alexein compared with Shark Magic
DetailAlexein logo Alexein Shark Magic
What it doesMemory for AI agents and the people using them Serverless sandboxes that bill only for the seconds your agent's code runs
StageNot given MVP
FoundedNot given Not given
Based inNot given MX
Pricing modelFreemium Freemium
PricingFree: 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. Shark Pro $5/month includes $5 of usage; Shark Studio $25/month includes $25; Shark Scale $100/month includes $100. Commands run at $0.12 per compute-hour, billed per second only while running. Services: 2 vCPU / 2 GiB at $0.03/h; 4 vCPU / 4 GiB at $0.06/h. Storage $0.08/GiB-month with first 5 GiB f
Key features
  • 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
  • Persistent Space for agent files and databases
  • Pay only for compute time while command runs, not idle or thinking time
  • HTTP API with Python and TypeScript SDKs
  • CLI for devbox with Claude Code and Codex support
  • Sleeping services that wake in milliseconds
  • Fork Spaces fast without booting VM
  • API key isolation outside VM with egress proxy
  • Fast file search with sharkfn 300–600× faster than ripgrep
  • Integration with LangChain, LangGraph, smolagents, and Prefect
What makes it different
  • Reduces token usage while improving context accuracy
  • Privacy and data control built in, not bolted on
  • Nothing is dropped when limits are reached
  • Billing only for seconds code actually runs, not idle or thinking time
  • Lowest cost compared to alternatives for agent infrastructure
  • Persistent Storage with fast Space fork and file access without VM boot
  • No GPU required, works with unmodified existing agent harnesses
  • Sleeping services wake in milliseconds with zero idle billing
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)10 +7 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)120
Referring domains (Majestic)30

5 details filled in for both companies.

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