Earlier this summer, I visited the AI company Synthesia to give it what it needed to create a hyperrealistic AI-generated avatar of me. The company's avatars are a decent barometer of just how dizzying progress has been in AI over the past few years, so I was curious just how accurately its latest AI model, introduced last month, could replicate me. I found my avatar as unnerving as it is technically impressive. It's slick enough to pass as a high-definition recording of a chirpy corporate speech, and if you didn't know me, you'd probably think that's exactly what it was. My avatar shows how it's becoming ever-harder to distinguish the artificial from the real.

The salesperson hawking Brother printers on Taobao works hard--like, really hard. At any time of the day, even when there's no audience on the Chinese ecommerce platform, the same woman wearing a white shirt and black skirt is always livestreaming, boasting about the various features of different office printers. She has a phone in one hand and often checks it as if to read a sales script or monitor the viewer comments coming in. "My friends, I've gotta plug this game-changing office tool that can double your workplace efficiency, " the salesperson said during one recent broadcast, trying to achieve the delicate balance between friendliness and precision that has come to define the billion-dollar livestream ecommerce industry in China. Occasionally, she greeted the invisible audience.

As anyone with even a trace of a regional dialect who has had to pay a parking fine can attest, voice recognition services struggle with accents. Now, people in Mark Sewards' constituency in Leeds are likely to find the same problem with his AI variant. A chatbot billed as the first AI version of an MP responds in Sewards' voice with advice, support or by offering to pass on a message to his team – but only if it understands you. The website, a virtual representation of the MP for Leeds South West and Morley – complete with a Pixar-style cartoon – was launched by a local startup to field questions from his constituents, some of whom have broad Leeds accents. I was interested to see how "Sewardsbot" would handle a conversation with someone from only a couple of miles away from his constituency border.

Jim Acosta and James Carville speculated whether President Trump will try to rig the 2026 midterms in his favor on "The Jim Acosta Show." Former CNN anchor Jim Acosta was slammed on social media after he posted a clip of his "interview" with an artificially animated avatar of deceased teenager Joaquin Oliver to promote a gun control message on Monday. Working with the gun control group Change the Ref, founded by Oliver's parents, Acosta had a conversation on his Substack with an avatar created by the father of the son, who was killed in the Parkland high school shooting in 2018. Oliver would have turned 25 on Monday. Social media users were shocked by Acosta's "grotesque" interview and slammed the journalist for using the deceased teen's avatar for political content.

Virtual Reality simulators offer a powerful tool for teacher training, yet the integration of AI-powered student avatars presents a critical challenge: determining the optimal level of avatar realism for effective pedagogy. This literature review examines the evolution of avatar realism in VR teacher training, synthesizes its theoretical implications, and proposes a new pedagogical framework to guide future design. Through a systematic review, this paper traces the progression from human-controlled avatars to generative AI prototypes. Applying learning theories like Cognitive Load Theory, we argue that hyper-realism is not always optimal, as high-fidelity avatars can impose excessive extraneous cognitive load on novices, a stance supported by recent empirical findings. A significant gap exists between the technological drive for photorealism and the pedagogical need for scaffolded learning. To address this gap, we propose Graduated Realism, a framework advocating for starting trainees with lower-fidelity avatars and progressively increasing behavioral complexity as skills develop. To make this computationally feasible, we outline a novel single-call architecture, Crazy Slots, which uses a probabilistic engine and a Retrieval-Augmented Generation database to generate authentic, real-time responses without the latency and cost of multi-step reasoning models. This review provides evidence-based principles for designing the next generation of AI simulators, arguing that a pedagogically grounded approach to realism is essential for creating scalable and effective teacher education tools.

Dr. Mehmet Oz, the new administrator for the Centers for Medicare and Medicaid Services (CMS), spent much of his first all-staff meeting on Monday promoting the use of artificial intelligence at the agency and praising Robert F. Kennedy Jr.'s "Make America Healthy Again Initiative," sources tell WIRED. During the meeting, Oz discussed possibly prioritizing AI avatars over frontline health care workers. Oz claimed that if a patient went to a doctor for a diabetes diagnosis, it would be 100 per hour, while an appointment with an AI avatar would cost considerably less, at just 2 an hour. Oz also claimed that patients have rated the care they've received from an AI avatar as equal to or better than a human doctor. Because of technologies like machine learning and AI, Oz claimed, it is now possible to scale "good ideas" in an affordable and fast way.

In 2025, AI is poised to change every aspect of democratic politics--but it won't necessarily be for the worse. India's prime minister, Narendra Modi, has used AI to translate his speeches for his multilingual electorate in real time, demonstrating how AI can help diverse democracies to be more inclusive. AI avatars were used by presidential candidates in South Korea in electioneering, enabling them to provide answers to thousands of voters' questions simultaneously. We are also starting to see AI tools aid fundraising and get-out-the-vote efforts. AI techniques are starting to augment more traditional polling methods, helping campaigns get cheaper and faster data.

It always seemed difficult for the newspaper where I used to work, The Garden Island on the rural Hawaiian island of Kauai, to hire reporters. If someone left, it could take months before we hired a replacement, if we ever did. So, last Thursday, I was happy to see that the paper appeared to have hired two new journalists--even if they seemed a little off. In a spacious studio overlooking a tropical beach, James, a middle-aged Asian man who appears to be unable to blink, and Rose, a younger redhead who struggles to pronounce words like "Hanalei" and "TV," presented their first news broadcast, over pulsing music that reminds me of the Challengers score. There is something deeply off-putting about their performance: James' hands can't stop vibrating.

This study examines the influence of perceived AI features on user motivation in virtual interactions. AI avatars, being disclosed as being an AI, or embodying specific genders, could be used in user-AI interactions. Leveraging insights from AI and avatar research, we explore how AI disclosure and gender affect user motivation. We conducted a game-based experiment involving over 72,500 participants who solved search problems alone or with an AI companion. Different groups experienced varying AI appearances and disclosures. We measured play intensity. Results revealed that the presence of another avatar led to less intense play compared to solo play. Disclosure of the avatar as AI heightened effort intensity compared to non-disclosed AI companions. Additionally, a masculine AI appearance reduced effort intensity.

No one else is able to do that," says Jack Saunders, a researcher at the University of Bath, who was not involved in Synthesia's work. The full-body avatars he previewed are very good, he says, despite small errors such as hands "slicing" into each other at times. But "chances are you're not really going to be looking that close to notice it," Saunders says. Synthesia launched its first version of hyperrealistic AI avatars, also known as deepfakes, in April. These avatars use large language models to match expressions and tone of voice to the sentiment of spoken text.