OpenAI estimates that ChatGPT rejected more than 250,000 requests to generate images of the 2024 U.S. presidential candidates in the lead up to Election Day, the company said in a blog on Friday.

The rejections included image-generation requests involving President-elect Donald Trump, Vice President Kamala Harris, President Joe Biden, Minnesota Gov. Tim Walz and Vice President-elect JD Vance, OpenAI said.

The rise of generative artificial intelligence has led to concerns about how misinformation created using the technology could affect the numerous elections taking place around the world in 2024. 

The number of deepfakes has increased 900% year over year, according to data from Clarity, a machine learning firm. Some included videos that were created or paid for by Russians seeking to disrupt the U.S. elections, U.S. intelligence officials say.

In a 54-page October report, OpenAI said it had disrupted “more than 20 operations and deceptive networks from around the world that attempted to use our models.” The threats ranged from AI-generated website articles to social media posts by fake accounts, the company wrote. None of the election-related operations were able to attract “viral engagement,” the report noted.

In its Friday blog, OpenAI said it hadn’t seen any evidence that covert operations aiming to influence the outcome of the U.S. election using the company’s products were able to successfully go viral or build “sustained audiences.”

Lawmakers have been particularly concerned about misinformation in the age of generative AI, which took off in late 2022 with the launch of ChatGPT. Large language models are still new and routinely spit out inaccurate and unreliable information.

“Voters categorically should not look to AI chatbots for information about voting or the election — there are far too many concerns about accuracy and completeness,” Alexandra Reeve Givens, CEO of the Center for Democracy & Technology, told CNBC last week.

WATCH: AI likely to be less regulated and more volatile under second Trump presidency

Sony raised sales guidance for the full year Thursday and posted operating profit that smashed analyst expectations after a strong quarter for its gaming business.

Here’s how the company did in the September quarter, versus LSEG consensus estimates:

• Revenue: 2.97 trillion Japanese yen ($19.4 billion), versus 3.03 trillion yen expected. That was up 9% and slightly below analyst expectations.
• Operating profit: 445.1 billion yen ($2.91 billion), versus 336.07 billion yen expected. That’s up 73% year-over-year and beats expectations.

The Japanese tech giant revised its fiscal year 2025 revenue target up slightly to 12.7 trillion yen. It previously targeted 12.6 billion yen of sales. Sony also expects full-year operating profit of 1.3 trillion yen, in line with its previous forecast.

That came as Sony saw strength in its game and network services division, which houses its popular PlayStation home console brand. Game and network services revenue at the company came in at 1 trillion yen, up 11% year-over-year.

Sony’s gaming division has held up well thanks to a shift to digital game purchases and the PlayStation Plus subscription service. However, hardware shipments have proven lackluster amid a weak console market beset by a lack of hyped up triple-A games.

Analysts expect things to improve next year for the gaming sector, though — not least thanks to the anticipated launch of a next-generation Nintendo Switch model and the release of Grand Theft Auto VI.

Sony said it sold 3.8 million PlayStation 5 units for the September quarter, down 22% year-over-year. Still, the firm saw a 28% jump in game software sales for the three-month period, to 612.3 million yen.

On Thursday, Sony launched its upgraded PlayStation 5 Pro console, touting a better graphics card allowing for faster gameplay rendering and new artificial intelligence capabilities to upscale graphics with sharper image clarity.

Analysts hope that the launch will boost interest in the PS5 with a souped-up piece of hardware ready for release of GTA VI, one of this decade’s most hotly anticipated games.

Correction: This story has been updated to reflect that operating income jumped 73% year-over-year in the September quarter.

Samsung Electronics was once the dominant player in a type of semiconductor known as memory, putting it in a great position to capitalize on the boom of artificial intelligence.

But the South Korea electronics giant has now fallen behind its long-time rival SK Hynix in next-generation chips that have been key component for AI silicon leader Nvidia. The result? Samsung’s profit has plunged, around $126 billion has been wiped off its market value, according to data from S&P Capital IQ, and an executive issued a rare public apology about the company’s recent financial performance.

Memory is a critical type of chip used to store data, and it can be found in a plethora of devices from smartphones to laptops. For years, Samsung was the undeniable leader in this technology, ahead of South Korean rival SK Hynix and U.S. competitor Micron.

But as AI applications such as OpenAI’s ChatGPT rose in popularity, the underlying infrastructure required to train the huge models they rely on became a bigger focus. Nvidia has emerged as the top player in this space with its graphics processing units (GPUs) that have become the gold standard used by tech giants for AI training.

A crucial part of that semiconductor architecture is high-bandwidth memory, or HBM. This next generation of memory involves stacking multiple dynamic random access memory (DRAM) chips, but it had a small market before the AI boom.

That’s where Samsung got caught out and failed to invest.

“HBM has been a very niche product … for a long time and Samsung has not focused its resources on its development,” Kazunori Ito, director of equity research at Morningstar, told CNBC by email.

“Due to the difficulty of the technology involved in stacking DRAMs and the small size of the addressable market, it was believed that the high development costs were not justified.”

SK Hynix saw this opportunity. The company aggressively launched HBM chips which were approved for use in Nvidia architecture and, in the process, the South Korean firm established a close relationship with the U.S. giant. Nvidia’s CEO even asked the company to speed up supply of its next generation chip, underscoring the importance of HBM to its products.

SK Hynix posted record quarterly operating profit in the September quarter.

“With strong R&D (research and development) investments and established industry partnerships, SK Hynix maintains an edge in both HBM innovation and market penetration,” Brady Wang, associated director at Counterpoint Research, told CNBC by email.

Samsung told CNBC that, in the third quarter, total HBM sales grew more than 70% quarter-on-quarter. The tech giant added that the current product known as HBM3E is in mass production and generating sales.

The South Korean tech company noted that development for its next-generation HBM4 is “underway according to plan” and that the company is targeting starting “mass production” in the second half of 2025.