Real conversations involve multi-turn exchanges, where context builds over time.

AI startups are increasingly encroaching on the territory of tech giants. Currently, Perplexity has launched its own AI browser Comet, and OpenAI is about to release its analog.
Developers who were creating chatbots yesterday are now building full-fledged browsers and openly challenging Google Chrome. This is happening against the backdrop of a rapid increase in the number of search queries via AI assistants — and at the same time drop in traffic to Google. The tech giant itself understands the situation: in recent months Chrome is actively acquiring AI features and the search engine is testing a new AI mode.
Comet is already available for subscribers Perplexity Max ($200/month) and a limited group of users on a waiting list. The browser has a built-in Perplexity AI search engine by default, which generates summaries instead of traditional links. In addition, Comet has a built-in Comet Assistant — an AI agent that automates routine tasks: reads mail, summarizes the calendar, manages tabs, and performs actions for the user on pages. You can call it at any time right on the website — it sees the content and reacts to it.
The latest AI News. Learn about LLMs, Gen AI and get ready for the rollout of AGI. Wes Roth covers the latest happenings in the world of OpenAI, Google, Anthropic, NVIDIA and Open Source AI.
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Conventional robots, like those used in industry and hazardous environments, are easy to model and control, but are too rigid to operate in confined spaces and uneven terrain. Soft, bio-inspired robots are far better at adapting to their environments and maneuvering in otherwise inaccessible places.
Imagine a physician attempting to reach a cancerous nodule deep within a patient’s lung—a target the size of a pea, hidden behind a maze of critical blood vessels and airways that shift with every breath. Straying one millimeter off course could puncture a major artery, and falling short could mean missing the cancer entirely, allowing it to spread untreated.
This is the high-stakes reality physicians face in thousands of procedures daily, where accuracy is critical and the task is complicated by anatomical obstacles that are non-penetrable or sensitive. Can artificial intelligence (AI) and robots help address these challenges and improve patient outcomes?
“A new era of “AI guidance” is dawning in medicine,” says Ron Alterovitz, Lawrence Grossberg Distinguished Professor in the Department of Computer Science. “Robots with advanced AI can assist physicians and automate certain tasks, enabling unprecedented levels of accuracy and making complex procedures safer and more effective.”