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Perplexity CEO Says Tech Giants 'Copy Anything That's Good'

2 months ago
Perplexity CEO Aravind Srinivas warned young entrepreneurs that tech giants will "copy anything that's good" during a talk at Y Combinator's AI Startup School, telling founders they must "live with that fear." Srinivas said that companies raising tens of billions need to justify capital expenditures and search for new revenue streams. Perplexity pioneered web-crawling chatbots when it launched its answer engine in December 2022, but Google's Bard added internet-crawling three months later, followed by ChatGPT in May 2023 and Anthropic's Claude in March 2025. The competition has extended to browsers, with Perplexity launching its Comet browser on July 9 and Reuters reporting that OpenAI is developing a web browser to challenge Google Chrome. Perplexity's communications head Jesse Dwyer said larger companies will "drown your voice."

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NIST Ion Clock Sets New Record for Most Accurate Clock in the World

2 months ago
NIST: There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and Technology (NIST) have improved their atomic clock based on a trapped aluminum ion. Part of the latest wave of optical atomic clocks, it can perform timekeeping with 19 decimal places of accuracy. Optical clocks are typically evaluated on two levels -- accuracy (how close a clock comes to measuring the ideal "true" time, also known as systematic uncertainty) and stability (how efficiently a clock can measure time, related to statistical uncertainty). This new record in accuracy comes out of 20 years of continuous improvement of the aluminum ion clock. Beyond its world-best accuracy, 41% greater than the previous record, this new clock is also 2.6 times more stable than any other ion clock. Reaching these levels has meant carefully improving every aspect of the clock, from the laser to the trap and the vacuum chamber. The team published its results in Physical Review Letters. "It's exciting to work on the most accurate clock ever," said Mason Marshall, NIST researcher and first author on the paper. "At NIST we get to carry out these long-term plans in precision measurement that can push the field of physics and our understanding of the world around us."

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The Art Of The GPU Deal

2 months ago

Perhaps the most interesting conversation that has happened so far in the White House in 2025, at least from the point of view of the IT sector, is when Nvidia co-founder and chief executive officer, Jensen Huang, put on his Sunday best suit and visited President Donald Trump to presumably talk about technology, AI, trade, and war on July 10. …

The Art Of The GPU Deal was written by Timothy Prickett Morgan at The Next Platform.

Timothy Prickett Morgan