Telegram
Primary interface. Send anything to your bot — text, voice, photo, doc. Birbal triages, classifies and saves it. 60+ commands for control.
Open Brain is a self-hosted AI operating system. Birbal, its always-on agent, captures from voice, photo, file, email and Telegram — then makes that memory available to Claude, ChatGPT and Cursor through one MCP endpoint. Your hardware, your encryption keys, your data.
Open Brain places every memory inside an anatomical 3D brain — by what it is. Tasks land in the prefrontal cortex. Photos in the visual cortex. Conversations in the hippocampus. Strong feelings in the amygdala.
Click a region to drill into its memories. Click a memory to focus on its 1-hop neighbourhood. Drag to teach the agent where you actually think it belongs. The first 3D anatomical map of a personal knowledge graph — and it's all yours.
Explore your cortex →Birbal isn't a chatbot. It's 40+ background loops running on your hardware: scanning email, mining patterns, decaying stale memories, predicting your next action, drafting replies, learning from every correction you make.
40+
Proactive analyses
Pattern mining, memory consolidation, knowledge-gap detection, sleep-gated replay, contradiction resolution.
21
Agent tools
Search · add · link · schedule · approve · build · deploy · explain — orchestrated through a 10-round ReAct loop.
60+
Telegram commands
Capture, search, brief, focus, /goals, /trust, /rules — control everything from your phone.
8
Trust domains
Per-domain autonomy: memory, tasks, rules, email, notifications, code, goals, persona. Promotes itself as it earns trust.
Six channels feed the same inbox. Telegram is the daily driver — text, voice, photo and document support; the rest cover desktop and background sources.
Primary interface. Send anything to your bot — text, voice, photo, doc. Birbal triages, classifies and saves it. 60+ commands for control.
Whisper transcribes, Birbal classifies media intent (memory vs task). Hands-free capture from any device.
Vision AI extracts text, summarises, tags whiteboards, screenshots and receipts.
Outlook + Gmail + IMAP. Surfaces what needs a reply, drafts the rest, builds a behavioural profile of every sender.
One tap to save articles. Readability + Ollama summary, $0 cost. Chrome history bulk-import nightly.
PDF, DOCX, TXT, JSON — Open Brain reads them all and links them to the right memories automatically.
40+ background loops. 8 per-domain trust levels. Self-evolving constitution learnt from your corrections. Fully audit-logged.
Co-occurrence linking, entity extraction, community detection, PageRank importance, anatomical 3D placement.
Self-host on Railway in 5 minutes. Or run end-to-end on Ollama for £0/month. AES-256 encrypted at rest. MIT licensed.
Most "second brain" tools want your data on their servers, behind their pricing tiers, accessible only to whatever AI they bundle. Open Brain inverts the model.
| Notion AI | Mem.ai | Obsidian | Open Brain | |
|---|---|---|---|---|
| You own the data | No (their servers) | No (their servers) | Yes (local files) | Yes (your DB) |
| Self-hostable | No | No | Local only | Yes (Railway / VPS) |
| Multi-AI access (one memory) | Their AI only | Their AI only | Plugin-by-plugin | MCP — every AI tool |
| Always-on autonomous agent | No | Limited | No | 40+ loops |
| Cost (own keys) | $10+/mo | $10+/mo | Free | £0 + LLM |
| 3D anatomical brain map | No | No | No | Yes |
Every memory becomes a node. Every link is typed (supports, extends, contradicts, supersedes). Communities emerge automatically. Birbal builds bridges between knowledge silos so you find connections you'd have otherwise missed.
Explore the graph →Six channels feed the same inbox. Voice memos, phone photos, web links, files, emails and Telegram messages all land in one place — automatically tagged, summarised and ready for triage.
Whisper transcribes, Birbal classifies. Hands-free capture from any device.
Vision AI extracts text, summarises, tags whiteboards & receipts.
PDF, DOCX, TXT, JSON — Open Brain reads them all and links them to the right memories.
One tap to save articles. Readability + Ollama summary, $0 cost.
Outlook + Gmail + IMAP. Surfaces what needs a reply, drafts the rest.
Send anything to your bot — text, voice, photo, doc. Birbal triages it.
40+ background loops process tasks, monitor email, mine patterns and surface the next action — without prompting.
Co-occurrence linking, entity extraction, community detection and PageRank importance — your knowledge as a living graph.
Self-host on Railway in 5 minutes, or run end-to-end on Ollama for £0 / month. AES-256 encryption, MIT licensed.
Every memory becomes a node. Every link is typed (supports, extends, contradicts, supersedes). Communities emerge. Birbal builds bridges between knowledge silos automatically.
Explore the graph →Bring your own keys (or run fully local on Ollama for £0). Pay only for the LLM cycles you actually use.
Open source
Free
Self-hosted · MIT · forever
BYOK Cloud
£0 + LLM
Run on Railway. You bring API keys.
Fully local
£0 / mo
Ollama + your machine. Zero spend.