HACKER Q&A
📣 jnnnthnn

Show HN: I built a LLM-powered like Perplexity, but for HN comments


Hi HN!

I'm Jonathan and I built Ask Hacker Search (https://hackersearch.net/ask), an LLM-powered version of Hacker News' Ask HN.

Unlike Ask HN, Ask Hacker Search doesn't solicit new contributions from HN readers. Instead, it leverages Hacker News' historical data to answer questions, and offers LLM-generated summaries of those. I've used it for questions like "Should I use Drizzle or Prisma?" or "What is a good screen capture that allows easy zooming effects on Mac?".

It is particularly useful when you're interested in understanding HN readers' sentiment about a topic, or when looking for expert insights on topics of interest to HN readers. I've been using it continually while building it, and have found it particularly useful to find software libraries recommended by HN or get quick vibe checks on hot topics.

This builds on my release of Hacker Search two weeks ago (https://news.ycombinator.com/item?id=40238509), which offered a semantic search engine over top HN submissions. It's not just a small upgrade: covering comments was the #1 requested feature after that launch, so I rebuilt the near entirety of the product to support that.

Please try it out and let me know what you think of it! I have to limit the number of LLM summaries each person can get for free, as this is entirely self-funded. If you hit the limit, you can subscribe for more summaries generated by a better model ($8/month), or bring your own compute by running inference on Ollama on your machine!


  👤 sprobertson Accepted Answer ✓
Well done. Matching the HN style with Tailwind is a nice touch.

One thing I've been wanting for with search in general, especially LLM-powered, is having some kind of date relevance - especially with the fast moving world of technology.

For example I want to know how ProductX and ProductY compare. Last year ProductY didn't have FeatureZ, but they implemented and announced it last month. There might be several comments lamenting the lack of FeatureZ from 2 months ago, but they shouldn't be considered with the same weight now that it does exist.

I don't have any ideas for how this should be done but it's something I'd like to see tackled in RAG systems in general, and wanted to put it out there.


👤 jsunderland323
My UX feedback is that I had a natural inclination to click on one of the response comments to my query and expected to be redirected to that hn post and if possible scrolled to the comment. I know why you might not want that but as long as you’re using query Params and not doing anything weird with browser history I’d almost certainly toggle back.

I could definitely use this as an alternative to hn algolia for some things but it’s going to be hard for me to remember. I’d recommend doing this as a browser extension or something so it’s not 100% lost in the void.


👤 Valk3_
I'm kind of late to this post, but really awesome initiative and well executed project! Thank you for bringing this to people!

I tested it a bit and it seems pretty decent, although for some really niche theoretical questions it wasn't successful in retrieving the answers I wanted even if alot of the results were really good in other aspects. It could simply be because the answer is not available anywhere in hackernews.

I'm wondering if someone were to build a similar project but for other sites, what would your advice be? For instance what technical difficulties did you stumble on that you think would be good to be aware of?

Thanks in advance and once again congratulations on the project!


👤 r0fl
I tried a few different searches and it has blown me away at how good the summaries are! Incredible execution!

Personally I like that it doesn’t look like a cookie cutter 2024 templates site and has a more raw feel but I’m not sure that’s the best way to gain mass users these days.

10/10 for me

I’m impressed and most of the time I’m disappointed in the show hn section


👤 coloneltcb
This is very cool. I wouldn't make buying decisions off of this, but it is a good starting point to get a pulse on the developer zeitgeist on any given topic.

👤 aritraghosh007
Very cool application of LLMs to supercharge the HN search experience. I’m bookmarking it!

👤 spikey_sanju
Well done! I was also working on something similar and created a POC, but this is super nice.

👤 jnnnthnn
I got some feedback that GPT-3.5 was letting people down so improved my caching strategy and defaulted everything to GPT-4o!

👤 gsuuon
This is awesome! The comment filtering feature is a nice touch. Do I need to sign up to try local inferencing?

👤 J_Shelby_J
Hey, great work! Definitely will look forward to using.

Can I ask what the tech stack is? Is it open source?


👤 retox
From the YC legal page

>Except as expressly authorized by Y Combinator, you agree not to modify, copy, frame, scrape, rent, lease, loan, sell, distribute or create derivative works based on the Site or the Site Content, in whole or in part,

>In connection with your use of the Site you will not engage in or use any data mining, robots, scraping or similar data gathering or extraction methods.

Who owns the posts that you are trying to profit from?


👤 lpetting
this is cool; i like that you used it continuously while building it/ built it for your own needs. are there any kinds of searches it does particularly well at? any fun hot takes come up in your summarizers?

👤 maguito
I dig! Something like this would be cool to see for reddit too

👤 android521
this is cool. which tech stacks do you use.Is it open source?

👤 testmasterflex
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