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Living Brain vs Harny

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

Living Brain compared with Harny
DetailLiving Brain logo Living BrainHarny logo Harny
What it doesA persistent and self-learning interoperable memory layer for AI agents and tools. Agent harness infrastructure that gives AI agents memory for each user, connected accounts, action limits and an audit record.
StageNot given Not given
FoundedNot given Not given
Based inNot given CA
Pricing modelFreemium Freemium
PricingLiving Brain API: $8 per 1M input tokens and $0.50 per 1M output tokens, pay as you go with $5 minimum top-up and no monthly minimum. Living Brain Workspace: $99 per month (most popular), includes three team seats, $80 shared monthly credits for first three cycles then $50, managed Brains and agents Free: first 500 monthly-active end users per month, free forever. Paid: $0.30 per monthly-active end user above 500, billed monthly.
Key features
  • Semantic search and connection discovery
  • Memory scoring and optimization
  • REST API, SDK, CLI and MCP support
  • Document extraction and storage
  • Audio transcription
  • Webhook subscriptions and integrations
  • Slack and Telegram capture
  • Scheduled briefs and page history
  • Markdown export and structured output
  • Multi-brain and team collaboration
  • Timestamped memory ingestion with backdating capability
  • Per-user data isolation and privacy scoping
  • Ranked memory recall with dated evidence
  • Connected accounts integration per user
  • Long-running agent jobs with folder-level operations
  • Configurable token ceiling per API call
  • Enforced action limits on agent operations
  • Complete action audit trail with hash chaining
  • MCP server integration for Claude and other clients
What makes it different
  • 22.6X fewer tokens per question and 95% lower cost per task vs full context baseline
  • 0% hallucinations on LongMemEval-S evaluation
  • Works across 60+ AI platforms via unified API
  • Highest published BEAM benchmark score at 128K tokens: 85.1, compared to competing memory systems
  • 98% fewer tokens required than raw tool output, making responses 4× cheaper
  • Works with 20+ agent frameworks including LangChain, LangGraph and LlamaIndex
  • First 500 monthly-active end users free forever
  • Per-person billing model scales with user growth, not API calls
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)12 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)70
Citation Flow (Majestic)180
Referring domains (Majestic)31

5 details filled in for both companies.

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