🗣️ Post 1: Show HN: TabTabTab – Cursor for Google Sheets

As posted by: break_the_bank  |  🔥 Points: 5

https://tabtabtab.ai/

💬 Summary

Hello, HN!

We are Gyani and Vasin. We’re building TabTabTab (https://tabtabtab.ai), an AI agent that helps you work faster in Google Sheets. Before this we worked at Bloomberg (where we met 7 years ago), Citadel, and Palantir.

We’re software engineers, and it feels fundamentally unfair that the best AI tools are limited to software engineers. Most knowledge workers only have ChatGPT as the best option. We want to give everyone AI superpowers.

A few months ago, we started by putting AI into copy and paste. Our assistant was aware of what you copied, and transformed it as you pasted it. We built this on accessibility and screenshot APIs. The goal was to move away from the chat box by building on one of the most-used shortcuts: copy and paste.

We noticed most users were using it to structure data in Google Sheets. They would copy from places like LinkedIn, PostHog, booking sites, business directories, and conference websites, then structure it in Sheets.

We decided to narrow in on this. We can deliver far more value if the interaction doesn’t end at paste. Much of what people do with copy and paste can be handled by an agent using web search, crawling, and data providers. And once the data is in the sheet, people want to do something with it—so we help with that too.

That’s how TabTabTab for Google Sheets was born. It’s a Chrome extension that lets you interact with a copilot that understands Google Sheets, can run code, has access to web search and enrichment APIs, and can crawl the web (we can do this on our backend or locally on your computer if you grant extra permissions).

While it’s very early, we’ve seen some interesting use cases:

- One of our first paying customers (a complete stranger) is a bank manager in Laos who also runs cafes on the side. He used TabTabTab to model the business, launch the main shop and five additional locations, and now uses it to manage the operation.

- Many people use us for enrichment. We ship with search plus some APIs, so if you have a list of LinkedIn URLs and want to figure out who they are, we can do that for you.

- We’ve seen data analysis use cases like customer segmentation, sensitivity analysis, categorizing and ranking data, and teachers building course schedules and staff allocations.

This seems to resonate with generalists and SMB professionals. Often they’re very comfortable with Google Sheets and don’t want to learn a new tool for a specific job, or there simply isn’t a tool for their use case—so they pick Google Sheets, and now us.

Permissions: You sign in with your Google account. We can only see files you explicitly grant access to, individually. Our Chrome permissions are standard. Optionally, we can request permission to open websites on your behalf (for example, if you’re trying to find mutual connections with someone on LinkedIn).

Pricing: Free Pro trial for 7 days, then $20/month for Pro, which includes access to Claude 4 Sonnet, GPT-5, and Gemini 2.5 Pro. There’s also a free tier with generous limits on more basic models.

Link to extension: https://chromewebstore.google.com/detail/tabtabtab-the-ai-ag... (works on all major browsers like Chrome, Edge, Safari)

We’re here to help! If you need anything, reach us at hello at tabtabtab dot ai.

Thanks,

Gyani & Vasin

🗣️ Post 2: We've attacked 40+ AI tools, including ChatGPT, Claude and Perplexity

As posted by: lidangzzz  |  🔥 Points: 3

https://github.com/lidangzzz/AIGuardPDF

💬 Summary

AIGuardPDF - AI-Adversarial PDF Generator A powerful tool designed to protect human documents from AI intrusion by embedding adversarial content that misleads large language models while maintaining perfect human readability. 🛡️ Mission Statement In an era of increasing AI surveillance and data harvesting, AIGuardPDF serves as a digital fortress for your intellectual property. Our mission is to establish clear boundaries between human content and AI systems, protecting privacy, confidentiality, and human sovereignty over information. 🎯 How It Works Our adversarial attack method employs sophisticated text steganography: Text Fragmentation: Your original text is randomly broken into small fragments (3-7 characters) Adversarial Injection: We inject 10x-50x more content using transparent white text containing unrelated articles Strategic Mixing: Original fragments are interwoven with...

🗣️ Post 3: Smalltalk about Smalltalk

As posted by: DavidCanHelp  |  🔥 Points: 2

https://github.com/cloudstreet-dev/Smalltalk-about-Smalltalk/blob/main/chapters/01-introduction.md

💬 Summary

We read every piece of feedback, and take your input very seriously.

Include my email address so I can be contacted

🗣️ Post 4: Gemini tops App Store; Grok 4 Fast ships; ChatGPT gets harder to trick

As posted by: WASDAai  |  🔥 Points: 1

https://lightcapai.medium.com/ais-wild-week-typos-emojis-and-the-chatbot-arms-race-e637503eae60

💬 Summary

AI’s Wild Week: Typos, Emojis, and the Chatbot Arms Race Faruk Alpay 15 min read · Just now Just now -- Listen Share Press enter or click to view image in full size Image generated by OpenAI’s application ChatGPT meanwhile the user were using among OpenAI’s latest models GPT-5. The world of AI never has a dull moment. In just one week, we saw ChatGPT accused of making a typo, a rival model going berserk over a 🐴 seahorse emoji, Twitter hacks striking AI leadership, new features rolling out (and failing to impress), and an all-out sprint in the AI app store charts. It’s chaotic, it’s hilarious, and it’s telling us something important about where this technology is headed. In...

🗣️ Post 5: Show HN: Rallies – Investment assistant backed by real time data

As posted by: rallies  |  🔥 Points: 1

https://news.ycombinator.com/item?id=45238628

💬 Summary

Hey folks,

Software engineer turned trader here. I absolutely love ChatGPT and Perplexity finance when it comes to doing any investment research and have been heavily using them for the past year. But there are also some big gaps like out-dated data, no charts, etc. Because both tools mostly rely on web search, there is an inherent limitation of delayed time data.

I've been spending some spare time over the last few months to see if we can build something to address both issues while keeping the core aspect of ChatGPT and perplexity intact i.e a chatbot interface but heavily rooted in real time data that's also super visual.

Launched https://rallies.ai 2 months back and have been iterating on it ever since. It uses an agentic framework to retrieve real time data on a query, and answers questions along with relevant charts.

Although this is a small change, the results look significantly better.

Would love to take any feedback. There's a lot more to do.

Also happy to answer any questions.

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