The true second brain

Stop cutting thoughts in half.

Augmented Reasoning Retrieval · ARR

Every AI memory system chops your knowledge into fixed-size pieces, so ideas get split, context gets lost and answers go wrong. ARR draws its boundaries dynamically around meaning, and makes any AI you connect it to dramatically smarter about what you know.

Early access waitlist · No payment required
−20%Design target: 20% fewer retrieval calls, because every piece ARR returns is a complete idea.
The number one problem in retrieval

Chunking breaks meaning.

Most retrieval systems split every document every few hundred tokens, wherever the count lands. Switch between the two modes to see the difference.

Source: project_notes.md
Question asked“Why was the Bangkok launch delayed, and what did we decide?”
Illustrative example showing how each approach splits the same text.
How ARR works

Retrieval that reasons.

ARR moves reasoning into the retrieval step itself, so the AI receives complete, connected ideas instead of random fragments.

01

Dynamic bounding

Boundaries are placed where one idea ends and the next begins, not every 512 tokens. Each piece is a complete thought, whatever its length, so the AI needs fewer calls to get the full picture. Our target is 20% fewer retrieval calls.

02

Reasoned links

Related ideas are connected across documents, like decisions, causes, people and dates, so retrieval can follow a chain of thought.

03

Any AI, upgraded

Connect ARR to the AI you already use. It gets whole context instead of fragments, and its answers improve without changing the model.

Note apps & standard RAG
ARR
Files and keyword or vector search
A second brain that understands and connects ideas
Fixed-size chunks cut ideas mid-thought
Dynamic bounds that follow meaning
Retrieves similar-looking text
Retrieves what actually answers the question
Many retrieval calls to piece an answer together
Targeting 20% fewer retrieval calls
Tied to one app
Makes any connected AI smarter
Built for everyone

One brain. Every use.

Individuals

Notes, research, ideas and reading turned into a memory your AI can really think with.

Teams

Meetings, decisions and documents connected, so anyone can ask what was decided and why.

Businesses

Company knowledge that answers accurately instead of guessing from fragments.

Developers

Plug ARR into your own AI apps and fix retrieval quality at the source.

Early access

Be first to think with ARR.

We're opening ARR to a small group of early users first. Join the list and we'll contact you when your place is ready.