Others were less impressed. "Is this the be-all-end-all Android phone/iPhone eviscerator? In two words: not really," wrote Joshua Topolsky of Engadget, a well-known technology blog.
"The phone is incredibly thin and sleek -- a little thinner than the iPhone -- but it has pretty familiar HTC-style industrial design. It's very handsome, but not blow-you-away good looking. It's a very slim, very pocketable phone, and feels pretty good in your hand."
Google said the phone can be purchased online, starting today, at google.com/phone.
A reporter asked if the Nexus One was an "iPhone killer," and the answer from a Google spokesperson was no, that the message the product sends is aimed at consumers rather than Apple.
"Choice is a really good thing," he said.
Google stock dropped slightly after the announcement today. Apple's stock went down slightly as the hour of Google's announcement approached, but then recovered. Apple is widely reported to be working on a folder-sized tablet device, and bloggers are widely looking at it to revolutionize personal computing -- though Apple has made a point of keeping it under wraps.
Google today said the Nexus One is thinner than a No. 2 pencil and has a processor that runs at 1 gigahertz, making it competitive with the power of many laptop or netbook computers.
Those machines may begin to look clunky if technology goes as many analysts predict. As Google showed off the Nexus One today, it used the slogan, "Web meets phone."