The discussion centers on whether complex semantic retrieval is necessary for RAG or if simpler, faster methods like lexical search and grep are sufficient. Participants strongly disagree on the trade-off between retrieval quality and speed, with some arguing that vector embeddings bias LLMs while others claim they are essential for handling unstructured data at scale.
38 readable replies · Supporting reply 1 · Supporting reply 2 · Supporting reply 3 · Supporting reply 4lightonai
next-plaid
Rust2026–2026
lightonai / next-plaid
next-plaid
NextPlaid, ColGREP: Multi-vector search, from database to coding agents.
5Distinct people
7Mentions
0Explicit recommenders
615GitHub stars
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What it is
NextPlaid, ColGREP: Multi-vector search, from database to coding agents.
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
Mentions over time
HN mentions by week7 dated mentions
Observed mentions: 2026-02-12 18:10:17 UTC to 2026-06-09 16:26:00 UTC. Weeks start Monday, UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Feb 9 | 2026-02-09 00:00:00 UTC | 2026-02-16 00:00:00 UTC | 2 | 2 | 0 |
| Feb 16 | 2026-02-16 00:00:00 UTC | 2026-02-23 00:00:00 UTC | 0 | 0 | 0 |
| Feb 23 | 2026-02-23 00:00:00 UTC | 2026-03-02 00:00:00 UTC | 0 | 0 | 0 |
| Mar 2 | 2026-03-02 00:00:00 UTC | 2026-03-09 00:00:00 UTC | 1 | 1 | 0 |
| Mar 9 | 2026-03-09 00:00:00 UTC | 2026-03-16 00:00:00 UTC | 0 | 0 | 0 |
| Mar 16 | 2026-03-16 00:00:00 UTC | 2026-03-23 00:00:00 UTC | 0 | 0 | 0 |
| Mar 23 | 2026-03-23 00:00:00 UTC | 2026-03-30 00:00:00 UTC | 0 | 0 | 0 |
| Mar 30 | 2026-03-30 00:00:00 UTC | 2026-04-06 00:00:00 UTC | 2 | 0 | 2 |
| Apr 6 | 2026-04-06 00:00:00 UTC | 2026-04-13 00:00:00 UTC | 0 | 0 | 0 |
| Apr 13 | 2026-04-13 00:00:00 UTC | 2026-04-20 00:00:00 UTC | 0 | 0 | 0 |
| Apr 20 | 2026-04-20 00:00:00 UTC | 2026-04-27 00:00:00 UTC | 0 | 0 | 0 |
| Apr 27 | 2026-04-27 00:00:00 UTC | 2026-05-04 00:00:00 UTC | 0 | 0 | 0 |
| May 4 | 2026-05-04 00:00:00 UTC | 2026-05-11 00:00:00 UTC | 0 | 0 | 0 |
| May 11 | 2026-05-11 00:00:00 UTC | 2026-05-18 00:00:00 UTC | 1 | 0 | 1 |
| May 18 | 2026-05-18 00:00:00 UTC | 2026-05-25 00:00:00 UTC | 0 | 0 | 0 |
| May 25 | 2026-05-25 00:00:00 UTC | 2026-06-01 00:00:00 UTC | 0 | 0 | 0 |
| Jun 1 | 2026-06-01 00:00:00 UTC | 2026-06-08 00:00:00 UTC | 0 | 0 | 0 |
| Jun 8 | 2026-06-08 00:00:00 UTC | 2026-06-15 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
7 sourcesALalexrigler·Jun 9, 2026
Combining regex filtering with semantic ranking using multi-vector embeddings has yielded good results for me. I use ColGREP from the LightOn team asa daily driver - https://github.com/lightonai/next-plaid/blob/main/colgrep/RE...
In Is Grep All You Need? How Agent Harnesses Reshape Agentic SearchHow does this compare with colgrep?
https://github.com/lightonai/next-plaid/tree/main/colgrep
In Show HN: Semble – Code search for agents that uses 98% fewer tokens than grepI ran across this fascinating tool a few days ago researching embedding models on hugging face.
Advertised as "ColGREP
Semantic code search for your terminal and your coding agents",
I haven't put it in any harness yet but I probably should.
https://github.com/lightonai/next-plaid/tree/main/colgrep
I've also tried astgrep (also known as sg) but llms really mess up on them. I think you'd need to fine tune.
If anyone has cracked that case I'd love to hear about it
In The future of code search is not regex – 100x faster than ripgrepI just stumbled on a fascinating replacement candidate while clicking around on embed models on hugging face: https://github.com/lightonai/next-plaid/tree/main/colgrep
it looks really interesting.
In Claude Code Unpacked : A visual guideA semantic Code Search CLI but with grep filters
1 points · Open discussionColGREP: Semantic code search for your terminal and your coding agents
5 points · Open discussionShow HN: Hybrid Semantic Grep for Claude Code
Releasing ColGREP today, made using our open-source multi-vector database, it support grep like filtering while adding an extra input to rank output of grep based on semantic similarity. ColGREP is packed with strong code retrieval models we designed and run 100% locally.
5 points · Open discussion