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AI 资讯

The union drive at the Wikimedia Foundation is expanding

In June, UK staff at the nonprofit that runs Wikipedia became the first to announce their intentions to form a union. Now, US-based employees at the Wikimedia Foundation are joining the union drive, but management at the nonprofit have declined to voluntarily recognize their union. "While the Wikimedia Foundation touts to the public that they […]

2026-07-29 原文 →
AI 资讯

Agent Memory & Context Engineering

How agents remember - and why deciding what to forget is the real skill An agent that starts every step with a blank mind cannot really pursue a goal. It would reintroduce itself to you on every message, forget what it just tried, and repeat the same mistake forever. Memory is what turns a stateless model into something that accumulates - that knows who you are, what it has already done, and what it learned last Tuesday. This post is about how that works and, more importantly, about the discipline of deciding what an agent should remember at all. The context window is not memory. The first thing to unlearn: a model’s context window is not its memory. The context window is working memory - RAM, not a hard drive. It is finite, it is reset on every request, and every token in it costs money and dilutes the model’s attention. Stuffing an entire conversation history and knowledge base into the prompt does not scale, and past a point it actively hurts - the model loses the important signal in a sea of stale detail. Real memory lives outside the window and is selectively loaded into it when needed. Four kinds of memory Borrowing loosely from cognitive science, agent memory is usually split into four types, and good systems use all of them: Short-term/working memory - the current conversation and the agent’s recent thoughts and observations. Lives in the context window. Long-term episodic memory - a record of what happened : past conversations, decisions, and the outcomes of previous tasks. Long-term semantic memory - facts and knowledge: who the user is, domain information, documents. This is what retrieval-augmented generation pulls from. Procedural memory - how to do things : learned skills, tool-use patterns, and reusable strategies. Short-term memory: the rolling buffer The simplest memory is just keeping recent turns in the prompt. The problem is that conversations outgrow the window, so the standard move is to keep the last few turns verbatim and summarise the older

2026-07-29 原文 →
开源项目

4GB graphics cards are back

The first modern GPU with 4GB of VRAM has appeared, as RAM prices and component shortages push tech prices higher. As Digital Foundry reports, a listing for an AMD Radeon RX 9050 with 4GB of RAM was spotted on ASRock's website by a user on X, the same day ASRock also launched an 8GB version […]

2026-07-28 原文 →
AI 资讯

Perplexity’s Personal Computer turns Windows PCs into AI agents

Perplexity has expanded its agentic Personal Computer tool to Windows, allowing computers running the world's most popular OS to be used as a locally run AI system. Like the Mac version that Perplexity launched in April, Personal Computer for Windows operates like a "general-purpose digital worker" that can access local files and apps to perform […]

2026-07-28 原文 →
AI 资讯

Smart rings are looking like my kind of AI gadget

Over the last few months, I've spent a lot of time talking to my computer. One underrated feature of the LLM revolution has been a remarkable leap in all kinds of dictation technology - even the fastest, cheapest models are getting very good at understanding and processing speech. I've tested lots of these apps, from […]

2026-07-28 原文 →
AI 资讯

Hugging Face is being used to easily undress women and children

Hugging Face is being used to make nonconsensual deepfakes, and the popular open-source AI model repository is doing very little to prevent it. That's according to a new report published by the European nonprofit AI Forensics, which found that seven out of the top nine image editing models hosted by Hugging Face readily complied with […]

2026-07-28 原文 →
开源项目

X Money is launching in the US starting today

X Money, a core part of Elon Musk's mission to turn X into an "everything app," is rolling out starting today, 9to5Mac reports. The payment platform offers a digital wallet and peer-to-peer payments similar to Venmo, along with a metal Visa card users can emblazon with their X username. Other perks include Apple Wallet support […]

2026-07-28 原文 →