Ask This Book

What it does

Ask This Book keeps your ideas, highlights, and conversations connected to the books they came from. A reading workspace built for readers who return to ideas over time.

Ask This Book keeps your highlights, questions, and conversations connected to the books they came from — a workspace for readers who return.

A reading workspace designed for asking questions, revisiting ideas, and thinking through books over time — grounded in the text and built specifically for readers. General AI tools are built for everything. Ask This Book is designed specifically for reading, understanding, and returning to ideas from books over time. Return to ideas weeks later without losing the context of the book you were exploring. Every response points back to the exact passage — chapter, page, the author's actual words. Nothing invented. Difficult concepts are explained in more human language without losing the author's meaning. Return to a book weeks later and pick up the thread — your questions, your context, still…from askthisbook.co

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  Summarize2019 · ▲256

  Remember the books you read through organized notes 📚

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  Myreader AI2023 · ▲164

  Let an AI read books for you

• EG
  Every great read I've come across, compiled into a knowledge graph2022 · prashantbarahi.com.np · ▲153
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  Mindset2016 · ▲84

  How You Can Fulfil Your Potential

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  Personal Libraries by Read This Twice2021 · ▲158

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  How to Read a Book2016 · ▲92

  The Classic Guide to Intelligent Reading

• TL
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  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

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  Files.md – Open-source alternative to Obsidian▲730

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  Dev tools · May 2026 · github.com