Obsidian Second Brain Model??

Reddit r/LocalLLaMA / 4/13/2026

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Key Points

A Reddit user with a MacBook Pro M4 Pro (24GB unified RAM) asks whether local LLMs can be used with Obsidian as a “second brain” assistant.
They want local-model features such as summarizing notes, linking related notes, tagging, and drilling deeper into specific topics.
The core goal is to use a local model as a RAG pipeline over their Obsidian vault to enable retrieval-augmented note exploration.
They are currently testing which model would work best given their hardware specifications and seek recommendations from others in the community.

I got a MacBook Pro M4 Pro 24GB Unified RAM

I was wondering if anybody here uses local LLM models as their second brain director for Obsidian.

- Summarise notes

- Link notes

- Tag notes

- Going deeper into the notes

- etc

But my main goal with this is to use a local model to refer to my vault as a RAG pipeline.

I’ve only recently began testing what specific model would be good with this and with my specs, any suggestions?