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2. Perplexity AI - Wikipedia

   en.wikipedia.org/wiki/Perplexity.ai

   Perplexity AI is an AI-powered research and conversational search engine that answers queries using natural language predictive text. It is based in San Francisco, California. Founded in 2022, Perplexity generates answers using sources from the web and cites links within the text response. [2] Perplexity works on a freemium model; the free ...

3. Jeff Bezos’s investment in Perplexity AI has nearly doubled ...

   www.aol.com/finance/jeff-bezos-investment...

   Of course, even Perplexity does hit a $1 billion valuation, it has a long way to go to truly challenge Google, which has enormous resources and AI talent at its disposal—and whose parent ...

4. Perplexity AI’s challenge to Google hinges on something ...

   www.aol.com/finance/perplexity-ai-challenge...

   Like a number of AI startups, Perplexity has managed to raise money in a tough environment. In 2023, $170.6 billion was invested across venture—that marks a decline of $71.6 billion from 2022 ...

5. Perplexity AI to launch ads on search platform by fourth quarter

   www.aol.com/news/perplexity-ai-launch-ads-search...

   In April, Perplexity AI raised $62.7 million from. Since ChatGPT first launched in November 2022, major search engines have been trying to integrate AI into web search, and analysts have viewed AI ...

6. Perplexity - Wikipedia

   en.wikipedia.org/wiki/Perplexity

   The perplexity is the exponentiation of the entropy, a more straightforward quantity. Entropy measures the expected or "average" number of bits required to encode the outcome of the random variable using an optimal variable-length code. It can also be regarded as the expected information gain from learning the outcome of the random variable ...

7. OpenAI - Wikipedia

   en.wikipedia.org/wiki/OpenAI

   Former headquarters at the Pioneer Building in San Francisco. In December 2015, OpenAI was founded by Sam Altman, Elon Musk, Ilya Sutskever, Greg Brockman, Trevor Blackwell, Vicki Cheung, Andrej Karpathy, Durk Kingma, John Schulman, Pamela Vagata, and Wojciech Zaremba, with Sam Altman and Elon Musk as the co-chairs. $1 billion in total was pledged by Sam Altman, Greg Brockman, Elon Musk, Reid ...