Kai vs Living Brain
Kai and Living Brain are both AI assistants tools. Kai is aimed at freelancers and small businesses, while Living Brain is aimed at developers and small businesses. Only Kai has a free plan.
AI executive assistant for email, meetings, calendar and tasks
Shared memory layer for AI agents via API, SDK, CLI and MCP
| Pricing | Paid · $20 | Paid |
| Starting price | $20/mo | Not published |
| Free plan | Yes | No |
| Free trial | — | — |
| Built for | Freelancers, Small businesses, Enterprise | Developers, Small businesses, Enterprise |
| Platforms | web, macos, android | web |
| Country | CH | — |
| Rating | — | — |
Choose Kai if
Founders, executives and consultants who want one assistant across email, meetings, calendar and tasks with approval before every action.
- Never sends or deletes without your confirmation
- No meeting bot joins your calls
- Free trial with no card and no time limit
Look elsewhere if: People who only need a fast email client or a meeting notepad (Superhuman, Granola).
Choose Living Brain if
Developers and AI-heavy teams who use several models and agents and want one portable memory layer behind them.
- Model-independent memory that follows you across AI tools
- Pay-as-you-go API with a $5 minimum and no subscription
- Many access routes: API, SDKs, CLI and MCP
Look elsewhere if: Teams that just need a note-taking app or a proven enterprise knowledge platform (Notion, Obsidian, Context Engine).
Kai vs Living Brain pricing
Kai
- Free trial$0One-time allowance, all features, no card, no time limit
- Base$20/moPer seat; base monthly allowance
- Pro$50/moPer seat; 5x Base allowance, includes Morgen Pro
- Ultra$100/moPer seat; 10x Base allowance, includes Morgen Pro
Living Brain
- API$8 per 1M input tokens$0.50 per 1M output, prepaid from $5, 1 GB, 1 seat
- Workspace$99/mo3 seats, 10 GB; included with ChatChat Pro+, no direct checkout
- BusinessCustomDedicated, customer-cloud or on-prem deployment options
Kai · Key features
- Botless meeting capture with live transcripts
- Meeting summaries with owners, action items and drafted recap emails
- Email triage into needs reply, FYI and waiting for reply
- Reply drafts in your own writing style and follow-up nudges
- Unified Google and Outlook calendar timeline with a daily brief
- AI-ranked task list filled from meetings and email
Cons
- Usage allowances are not published in absolute terms
- Hitting the monthly allowance pauses work until you upgrade
- Full two-sided call capture needs the Mac app
Living Brain · Key features
- Captures chats, files, notes and URLs into source-linked pages
- Knowledge graph with automatic connection discovery
- Hosted MCP server for Claude Code, Codex, Cursor, VS Code and more
- Sign-in connection for ChatGPT and Claude without an API key
- REST API, TypeScript and Python SDKs and a CLI
- PDF, Word, PPTX and HTML extraction plus audio transcription
Cons
- Benchmark results are the vendor's own evaluations
- Docs describe the product as early access
- Workspace has no direct checkout and comes with ChatChat Pro+
Kai vs Living Brain: FAQ
Do Kai and Living Brain have a free plan?
Kai has a free plan. Living Brain has no free plan.