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  2. /Discussion
  3. /Show HN: ChatIndex – A Lossless Memory System for AI Agents
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  3. /Show HN: ChatIndex – A Lossless Memory System for AI Agents
Last activity 7h agoPosted Nov 26, 2025 at 8:45 AM EST

Chatindex – a Lossless Memory System for AI Agents

LoMoGan
1 points
0 comments

Mood

informative

Sentiment

positive

Category

startup_launch

Key topics

Artificial Intelligence
Context Management
Large Language Models
Conversation History
Current AI chat assistants face a fundamental challenge: context management in long conversations.

Memory-based systems have been invented to alleviate the context rot problem, however, memory-based representations are inherently lossy and inevitably lose information from the original conversation. In principle, no lossy representation is universally perfect for all downstream tasks. This leads to two key requirements for defining a flexible in-context management system:

1. Preserve raw data: An index system that can retrieve the original conversation when necessary.

2. Multi-resolution access: Ability to retrieve information at different levels of detail on-demand.

ChatIndex is a context management system that enables LLMs to efficiently navigate and utilize long conversation histories through hierarchical tree-based indexing and intelligent reasoning-based retrieval.

Open-sourced repo: https://github.com/VectifyAI/ChatIndex

ChatIndex: A Lossless Memory System for AI Agents

Snapshot generated from the HN discussion

Discussion Activity

Light discussion

First comment

2h

Peak period

1

Hour 2

Avg / period

1

Key moments

  1. 01Story posted

    Nov 26, 2025 at 8:45 AM EST

    12h ago

    Step 01
  2. 02First comment

    Nov 26, 2025 at 10:34 AM EST

    2h after posting

    Step 02
  3. 03Peak activity

    1 comments in Hour 2

    Hottest window of the conversation

    Step 03
  4. 04Latest activity

    Nov 26, 2025 at 1:29 PM EST

    7h ago

    Step 04

Generating AI Summary...

Analyzing up to 500 comments to identify key contributors and discussion patterns

Discussion (0 comments)

Discussion hasn't started yet.

ID: 46057341Type: storyLast synced: 11/26/2025, 1:48:08 PM

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