Reading up on Perplexity
25 deep · digging since nov 26, 25
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Perplexity launches Brain, a self-improving memory system that builds a context graph from agent work and refines it overnight, boosting correctness by 25% and cutting costs by 13%.
- Rethinking Search as Code Generation
Perplexity introduces Search as Code (SaC), an architecture that exposes search stack components as programmable SDK primitives for AI agents to compose via generated Python code.
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Perplexity open-sources Bumblebee, a read-only scanner that checks developer machines for risky packages, extensions, and AI tool configs during supply-chain incidents.
- Google changes its search box
Google's shift to AI-generated search summaries threatens the ad-revenue web model by extracting content without sending traffic back to publishers.
- Opinion | What A.I. Did to My College Class
A Stanford senior describes how ChatGPT transformed campus culture, enabling widespread cheating and shifting focus from education to wealth-building.
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Perplexity launches Personal Computer for Mac, enabling local AI agents that work across files, apps, and the web with continuous autonomous operation.
- Perplexity launches Perplexity Health agent in US
Perplexity launches Perplexity Health in the US, a private AI health hub with data dashboards and specialized agents, competing with Microsoft and OpenAI.
- Personal Computer by Perplexity
Perplexity launches 'Personal Computer' — an always-on AI assistant with local file access, approval controls, and a kill switch, running on a compact desktop.
- Just a moment...
Perplexity announced a Personal Computer that runs its agentic AI locally on a Mac mini, combining cloud sub-agents with local file access.
- Perplexity rolling out SKILLs.MD support for Computer
Perplexity is adding Skills markdown-based reusable workflow instructions to its Computer platform and testing a Final Pass document review feature.
- Perplexity tests Messages integration and usage credits
Perplexity is developing a Mac Messages connector for its Comet browser and testing a usage-credits system for Pro users to buy extra capacity without upgrading.
- Perplexity Comet: A Reversing Story
The article provides a technical deep-dive into Perplexity's agentic browser Comet, detailing its dual-channel communication, hard boundaries, and page representation for AI interaction.
- Monetizing AI surfaces: Ads in the age of AI
OpenAI is testing intent-based ads and affiliate commerce in ChatGPT, with potential to become a $10B+ business if it builds effective measurement and avoids compromising answer quality.
- Data is the only moat
The author argues that data is the only sustainable competitive advantage for AI products, using Cursor's coding-agent success and a quadrant analysis of adoption vs. technical complexity to make the case.
- Amazon faces a dilemma — fight AI shopping agents, or join them
Amazon faces a dilemma between blocking external AI shopping agents like OpenAI's Instant Checkout and partnering with them, as the company risks losing control over e-commerce transactions to these agents.
- Shopify merchants can now sell products through AI chatbots
Shopify enables merchants to sell products directly through AI chatbots like ChatGPT, Perplexity, and Microsoft Copilot in its winter Editions update.
- New York Times Sues A.I. Start-Up Perplexity Over Use of Copyrighted Work - The New York Times
The New York Times sued AI startup Perplexity for copyright infringement, alleging its AI search tool illegally reproduces copyrighted news content.
- Perplexity says its AI personal shopper ‘puts you first’
Perplexity launches a free AI shopping assistant that remembers user preferences and enables direct purchases via PayPal, targeting holiday shoppers.
- Search | The Moat of the Search Index - by FD - Robonomics
The author argues that the traditional search index moat is largely gone because AI assistants like ChatGPT use multi-hop reasoning across multiple sources, hiding individual search failures.
- Just a moment...
Perplexity introduces memory features for its AI assistant, allowing it to remember user preferences and conversations across models for more personalized responses.
- Thread by @SashaKaletsky on Thread Reader App – Thread Reader App
Perplexity's global app downloads dropped 80% over six weeks, suggesting its earlier growth was largely fueled by paid marketing rather than organic user acquisition.
Takes
SCOOP: Perplexity is quietly building an AI coding tool that takes on Claude Code and Cursor. It's meant to build software end-to-end. The tool is being used internally (for now) under the codename 'Teammate.'
@CharlesRollet1
Suddenly it hit me. What happened to DeepSeek? Sora? GitHub Copilot? Llama? Cursor? Perplexity? What happened?
@shub0414
We’ve post trained a model on top of Qwen that achieves Pareto optimality on accuracy-cost curves. Unlike our previous post trained models, this model has been trained to be good at search and tool calls simultaneously, allowing us to unify the tool call router and summarization together in one model. The resulting model performs better than GPT and Sonnet in terms of cost efficiency to serve daily Perplexity queries in production. The production model runs on our own inference platform. We’re already serving a significant chunk of our daily traffic with this model and intend to have it serve all of default traffic pretty soon. More research to follow soon on models we’re training and deploying for Comet and Computer.
@AravSrinivas
Today we're releasing Personal Computer. Personal Computer integrates with the Perplexity Mac App for secure orchestration across your local files, native apps, and browser. We’re rolling this out to all Perplexity Max subscribers and everyone on the waitlist starting today.
@perplexity_ai