Google is looking for forms to reassure people that it is still at the forefront of artificial intelligence technology.
So far, the internet behemoth appears to be getting it wrong.
An advertisement for its new AI bot showed it answering a question incorrectly.
Alphabet shares fell more than 7% on Wednesday, erasing $100 billion (£82 billion) from the company's market value.
In the promotion for the bot, known as Bard, which was released on Twitter on Monday, the bot was asked what to tell a nine-year-old about James Webb Space Telescope discoveries.
It responded that the telescope was the first to take images of a planet outside the Earth's solar system, when in fact the European Very Large Telescope did so in 2004 - a mistake quickly corrected by astronomers on Twitter.
"Why didn't you fact check this example before sharing it?" Chris Harrison, a fellow at Newcastle University, replied to the tweet.
Investors were also underwhelmed by the company's presentation on its plans to incorporate artificial intelligence into its products. Since late last year, when Microsoft-backed OpenAI revealed new ChatGPT software, Google has been under fire. It rapidly became a viral sensation due to its ability to pass business school exams, compose song lyrics, and answer other questions.
A Google spokesperson stated the error emphasized "the importance of a rigorous testing process, something that we're kicking off this week with our Trusted Tester programme".
"We'll combine external feedback with our own internal testing to make sure Bard's responses meet a high bar for quality, safety, and roundedness in real-world information," they said.
Alphabet, Google's parent company, laid off 12,000 employees last month, accounting for about 6% of its global workforce.
