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Products that do what Using LLMs to Research Reddit to Help Decide What to Buy does

Shopping online can be pretty tedious if you care about the quality of what you are buying. The time it takes can scale pretty proportionally to some combination of the value, relative importance, and complexity of the purchase. I think LLMs can help expedite and personalize the online shopping experience to a degree marketplaces just don't currently provide. I don't think anybody really wants to read the product descriptions of a bunch of products, read reviews, do pairwise product comparisons, and find the best deals across different websites? Or am I wrong? That's why I think this…

  1. 1

    Compare LLMs on your data, measure, and pick the best.

    Apr 2026 · trismik.com

  2. 2TA

    I built this tool because I wanted a way to just take a bunch of URLs or domains, and query their content in RAG applications. It takes away the pain of crawling, extracting content, chunking, vectorizing, and updating periodically. I'm curious to see if it can be useful to others. I meant to launch this six months ago but life got in the way...

    2024 · embedding.io

  3. 3IW

    Hey HN, I made Browser-Use, an open-source tool that lets (all Langchain supported) LLMs execute tasks directly in the browser just with function calling. It allows you to build agents that interact with web elements using natural language prompts. We created a layer that simplifies website interaction for LLMs by extracting xPaths and interactive elements like buttons and input fields (and other fancy things). This enables you to design custom web automation and scraping functions without manual inspection through DevTools. Hasn't this been done a lot of times? Good question, as a general…

    2024 · github.com

  4. 4

    Open source Google Reviews analyzer project using LLM

    2023

  5. 5IM

    Hey HN, A pattern I realized when I shopped for anything online is that by the end of my shopping session, I would accumulated over 15+ tabs. It's so easy to click on "Open in New Tab" that I figured other people have this issue as well.

    2024 · curate.fit

  6. 6AB

    Hey HN Community! We built this simple community search tool that basically allows people to search through thousands of past Reddit threads and tens of thousands of recommendations using tags. It mostly covers a few bigger subreddits like r/BIFL, r/MFA, r/AskMen, r/SkincareAddiction but along the way, I expanded it to include other smaller subreddits too. In addition to filtering by category, power users can also search by -Body Fit (big thigh, long torso) -Occupation (work in retail, teacher, doctor) -Age (18-24, 25-35), Size (height, weight) -Brand comparison (similar…

    2022 · reddrecs.com

  7. 7

    Ranked options + Reddit sentiment for any purchase.

    Jul 2026 · thedecisionhub.com

  8. 8IB

    I was overspending on GPT-4o. It was really hard to compare different models I could switch to, so I built this LLM comparison tool. It shows leaderboards, pricing, and performance data across 100+ LLMs (including all major providers and open-source models). Key features: - Live pricing comparisons - Benchmark Scores (MMLU, HumanEval, GPQA, etc.) - Context length vs cost analysis - Speed/throughput tests across providers - Quality vs price visualizations - Open source (all data verifiable) Try it out: https://llmstats.com I'd like to know your opinion :) Tech stack: Next.js,…

    2025 · llm-stats.com

  9. 9IB

    Hey HN! I'm excited to announce the launch of my new project - OneClickCompare. Compare prices from Amazon, eBay, and AliExpress in seconds with OneClickCompare. Simply search for any product and instantly find the lowest prices in one place. Save time and money today! I will continue to improve this and would love to get your feedback / suggestions! :)

    2025 · oneclickcompare.com

  10. 10OS

    The LLM challenge - an online study - aims to answer a simple question: what is the quality corridor that matters to end users when interacting with LLMs? At what point do users stop seeing a quality difference and at what point do users get frustrated by poor LLM quality. The project is an Apache 2.0 licensed open source project available on Github: https://github.com/open-llm-initiative/llm-challenge. And the challenge is hosted on AWS as a single-page web app, where users see greeting text, followed by a randomly selected prompt and a LLM response, which they must rate…

    2024 · open-llm-initiative.com

  11. 11MS

    I was inspired by Feross Aboukhadijeh's instant search for YouTube, so I took the latest Etsy API and built an instant search for them. I'd love it if you'd try it out and let me know what you think. It is at http://www.glancely.com/ I really hope it doesn't need an explanation, but start typing what you're looking for. I used tags on the listings (among other things) to fuel my suggestions. Click a color to filter on those listings, click to sort on price. Click again to deselect. I've tested on the latest Firefox, Chrome and IE on Windows and Safari on an iPad. You will need JavaScript to…

    2010

  12. 12GV

    Hey HN, I just updated my project that compares some LLMs. It uses your prompt for all the models and runs at the same time. You can see the results being generated in real-time and decide what's the best for your use case. I'm open to any suggestions and feedback. Thanks!

    2024 · geminivsgpt.com

  13. 13IB

    Hey HN, I've been working on something cool that I wanted to share with you all. It's called Viewpoint, an analytics tool for LLMs like OpenAI, Anthropic models, and Gemini. The idea came from the constant flood of new LLM models and the need to figure out which ones work best for my projects without breaking the bank. With viewpoint, I can track token usage, costs, latency(WIP), and traffic over time, making it easier to compare different models and see which ones perform best and save money. The tool works asynchronously, so it doesn't add any latency to your LLM requests, and you have…

    2024 · viewpointhq.com

  14. 14RA

    Hey HN, I'm a founder at Ovlo a supply chain company.I had a problem. After every batch of customer interviews/research/feedback sessions, I'd run ideas through an LLM to help me decide what we should build next. Except it was obvious to my cofounder I wasn't really validating anything. LLMs are incredibly good at agreeing with you in subtle ways, especially when you feed them context that already reflects your thoughts. I'd ask "Does this make sense?" and get a beautifully worded essay about why yes, obviously, this is the best thing ever. I was using AI as an echo chamber without…

    Dec 2025 · roundtable.ovlo.ai

  15. 15PC
  16. 16
    WEM5

    Compare prices across UK retailers — stop overpaying online

    Jun 2026 · wem3.ai

  17. 17AA

    Wanted to get everyone's feedback on the web app my startup has been working on for the past few months. (didn't want to tweak it anymore before getting feedback from viewers who weren't my friends/family). http://www.foodia.com Would definitely love feedback on the UX (which needs work) and whether this is something you'd use before shopping/deciding what to buy. I'd also love to hear what food problems (if any) you all feel need solving. Thanks.

    2011

  18. 18IM

    So hard to keep up with tooling and MLOps - I put it all in one place and got some tips from an experienced friend on what to use.

    2025 · readyforagents.com

  19. 19

    Find customers who already want to buy your product

    Feb 2026

  20. 20

    Don't guess what to build. Mine it from reviews.

    May 2026 · needradar.net

  21. 21AE

    Hey folks, Elias here. Excited to unveil my latest project. Why I Built This: Traditional keyword search isn't cutting it. I've used LLM-embeddings to provide more nuanced, relevant results. How It Works: LLM-embedding similarity on curated datasets for semantically similar results. No need to iterate over keywords any more. Current Datasets: - YC Companies - Show HN Posts, - Ask HN Posts - ProductHunt Startups - Github Top 200k Repos Use Cases: - Validate a product idea's existence - Check if someone already Asked HN something - Have fun - search random terms and see what pops up Want to…

    2023 · payperrun.com

  22. 22WT

    Backstory: Few years back, I used a shared spreadsheet (GSheets) to organize my property hunt, and found it quite frustrating to keep on top of things just on the productivity side alone. Felt that there should be a better way to do this, and that's when I started creating a webapp, with features that can make this journey feel less stressful. This is a solo dev project. Have a look at the demo, and let me know your thoughts! Cheers

    2025 · dash.collabnest.app

  23. 23BC

    Created this app because nothing like it existed. I've always wanted to be able to sort products from my favorite online stores by how much each product had dropped in price. I think we're still the only site that does this. Please let me know if this is not true! What are some ways to get exposure? Google has already indexed over 600k of my pages and most of our traffic is organic search. Thanks, any suggestions or feedback would be appreciated.

    2013 · biggestpricedrop.com

  24. 24

    See what other buyers think before you buy on Amazon

    29d ago · buyerthoughts.jasperissac.com

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