Perplexity AI is a conversational search engine that uses large language models (LLMs) to answer queries using sources from the web and cites links within the text response.

[8] On November 18, 2024, Perplexity launched its shopping hub to attract users, backed by Amazon and leading AI chipmaker Nvidia.

This will give users product cards showing relevant items in response to asked questions about shopping.

[12] In October 2024, Perplexity AI introduced new finance-related features, including looking up stock prices and company earnings data.

[16] Initially, the Perplexity Assistant is free in 15 languages, including English, Spanish, French, German, Japanese, Korean, and Hindi.

For instance, certain features, such as summarizing unread emails or upcoming calendar events, require users to enable a workaround based on notifications.

In response, Srinivas said that the feature had some "rough edges" and accepted feedback but maintained that Perplexity only "aggregates" rather than plagiarizes information.

NYT is also suing OpenAI and Microsoft for copyright infringement for similarly using millions of its articles to train the large language models that power ChatGPT.

[36] The cease-and-desist notice sent by NYT lawyers read in part:"Perplexity and its business partners have been unjustly enriched by using, without authorization, The Times's expressive, carefully written and researched, and edited journalism without a license.

"[37] The same month, Dow Jones and New York Post filed a lawsuit against Perplexity, alleging copyright infringement.