Tech
Chinese brain interface startup Gestala raises $21M just two months after launch
Elon Musk’s Neuralink and OpenAI-backed Merge Labs are pushing forward with brain–computer interface (BCI) technology in the U.S. Meanwhile, Chinese serial entrepreneur Phoenix Peng is building rival efforts through two startups: NeuroXess, which develops implantable BCI systems, and a second company, Gestala, developing non-invasive ultrasound-based BCIs.
Gestala has raised $21.6 million (CN¥150 million) just two months after launching, at a valuation of $100 million to $200 million, founder and CEO Phoenix Peng told TechCrunch.
The round, co-led by Guosheng Capital and Dalton Venture with participation from Tsing Song Capital, Gobi Ventures, Fourier Intelligence, Liepin and Seas Capital, was heavily oversubscribed, with investor commitments totaling more than $58 million, Peng added.
This is the largest early-stage funding in China’s BCI industry. Peng will use the money towards R&D, expanding the team from 15 to about 35 employees by year-end, and building a manufacturing facility in China. The three-month-old startup aims to complete its first-generation prototype by the end of the year.
The global BCI industry is currently experiencing an investment surge in ultrasound technology. Gestala is the first ultrasound BCI company in China, though not the first globally. Several ultrasound BCI startups have emerged in the U.S. in recent years, including Merge Labs, which is among the largest.
Peng believes ultrasound could represent the next generation of brain–computer interface technology, offering the potential for broader, whole-brain access and new ways to interact with neural activity.
The founder says non-invasive ultrasound could address one of the biggest barriers to BCI adoption: the risks associated with brain surgery. Compared with implanted electrode systems, the technology can monitor a larger portion of the brain, including deep neural circuits. Using phased-array ultrasound, the system can also precisely stimulate or suppress neural activity without the need for surgery, he explained.
Techcrunch event
San Francisco, CA
|
October 13-15, 2026
Despite rising geopolitical tensions, Peng still hopes the U.S. and China can collaborate on deep-technology research.
“Both countries bring different strengths,” Peng said. “China offers large-scale clinical research capacity and efficient supply chains, while the U.S. has world-class scientific talent.” Joint efforts could also focus on building large clinical datasets to support global neuroscience research, he mentioned.
The company is exploring several uses for its tech. Medically, chronic pain management is the startup’s lead program. Chronic pain affects large populations in both the U.S. and China, and existing academic studies suggest ultrasound stimulation can significantly reduce pain levels, Peng said.
The startup is also studying applications in mental health conditions, including depression, PTSD, autism and OCD, as well as stroke rehabilitation. Other longer-term targets include Alzheimer’s disease, essential tremor and Parkinson’s disease. In total, the company is researching six to eight potential indications, though most remain at the early research stage rather than in clinical trials.
Gestala says its advantage over global rivals comes down to speed and scale. By leveraging China’s integrated manufacturing ecosystem, the startup believes it can move from development to production faster than many international competitors.
The company is also working with major Chinese hospitals to accelerate clinical trials at significantly lower costs — roughly 20% to 33% of comparable studies in the U.S. or Europe. At the same time, Gestala is building what it calls an “Ultrasound Brain Bank,” a large clinical dataset designed to train AI models to decode brain signals and support future neurological diagnostics.
Tech
Alexa+ gets a new ‘adults only’ personality option that curses but won’t do NSFW content
Amazon’s AI assistant Alexa+ is getting another new personality. On Thursday, the company announced it’s expanding its lineup of personality styles for users to choose from to include a “Sassy” option, which is for adults only. Notes Amazon, before opting to use the Sassy personality, users will be required to go through additional security checks in the Alexa app.
The personality style will also not be available when Amazon Kids is enabled, Amazon says.
The new option joins others like Brief, Chill, and Sweet, launched last month.

When you toggle on the option for Sassy in the Alexa mobile app, you’re warned that the Sassy style uses explicit language, which is why it requires a security check. On iOS, this involved a Face ID scan.
The AI assistant explained its style to us like this: “The Sassy style is built on one premise: help first, judge always. Every answer comes wrapped in wit and a well-placed roast — it’ll answer your question; it’ll just make you feel something about it first. Expect reality checks delivered with charm, compliments that somehow sting, and warmth you didn’t see coming. Equal-opportunity irreverence, zero apologies. Honest, sharp, and funny — and somehow that’s more helpful than helpful.”
Alexa’s app also had warned that the style could contain “mature subject matter.”
However, further investigation discovered this is not Amazon’s version of something like Grok’s adult AI companions. The AI assistant said the new option won’t get into areas like explicit sexual content, hate speech, illegal activities, personal attacks, or anything that could cause harm to oneself or others.
Techcrunch event
San Francisco, CA
|
October 13-15, 2026
The move is the latest example of how Amazon is trying to make Alexa+ more customizable, as it revamps the assistant for the generative AI era. By offering the assistant different personalities — including one positioned as more adult — Amazon is borrowing from a broader trend in AI, where companies have been experimenting with tone, style, and personas to make their assistants more engaging and personalized to the individual users’ choices.
Tech
Tesla becomes a utility in the UK, setting up showdown with Octopus Energy
Tesla is now an officially licensed utility in the United Kingdom, according to a new report from The Wall Street Journal. The automotive and energy company recently received a license from the Office of Gas and Electricity Markets, allowing it to sell electricity directly to households and commercial and industrial users.
The company has long dabbled in electricity markets. Its first pure energy products, the Powerwall and Powerpack, were introduced in 2015, but it wasn’t until a year later when Tesla merged with SolarCity that it started scaling the division rapidly. In 2022, the company launched Tesla Electric in Texas, which allowed it to sell electricity directly to customers. Powerwall owners can sell electrons from their batteries to participate in the company’s virtual power plant.
The new division, known as Tesla Energy Ventures, will compete with existing utilities in the U.K., including EDF, E.ON, and Octopus Energy. The competition with Octopus should prove particularly interesting. Since its founding in 2015, Octopus has become the country’s largest utility by focusing on slick software, renewable energy, and creative marketing. Sound familiar?
Tech
A writer is suing Grammarly for turning her and other authors into ‘AI editors’ without consent
Grammarly released a controversial feature last week that uses AI to simulate editorial feedback, making it seem like you’re getting a critique from novelist Stephen King, the late scientist Carl Sagan, or tech journalist Kara Swisher. But Grammarly did not get permission from the hundreds of experts it included in this feature, called “Expert Review,” to use their names.
One of the affected writers, journalist Julia Angwin, has filed a class action lawsuit against Superhuman, the parent company that owns Grammarly, arguing that the company violated the privacy and publicity rights of her and the other writers it impersonated. A class action lawsuit allows writers to join Angwin in her case.
“I have worked for decades honing my skills as a writer and editor, and I am distressed to discover that a tech company is selling an imposter version of my hard-earned expertise,” Angwin said in a statement.
The situation is more than a little ironic — Angwin has spent her career leading investigations into tech companies’ impacts on privacy. Other critics of this kind of technology, like renowned AI ethicist Timnit Gebru, were also included in Grammarly’s “Expert Review.”
The “Expert Review” feature, available only to subscribers paying $144 a year, predictably fails to deliver on the promise of thoughtful feedback.
Casey Newton, the founder and editor of the tech newsletter Platformer and another person impersonated by Grammarly, fed one of his articles into the tool and got feedback from Grammarly’s approximation of tech journalist Kara Swisher. Grammarly’s imitation of Swisher produced “feedback” so generic that it raises the question of why the company would go through the rigmarole of using these writers’ likenesses in the first place.
Here is what Grammarly’s approximation of Kara Swisher told him: “Could you briefly compare how daily AI users versus AI skeptics articulate risk, creating a through-line readers can follow?”
Techcrunch event
San Francisco, CA
|
October 13-15, 2026
Newton relayed the message from the AI approximation of Kara Swisher to the actual, real human being, Kara Swisher.
“You rapacious information and identity thieves better get ready for me to go full McConaughey on you,” Swisher texted Newton (referring to Grammarly). “Also, you suck.”
Grammarly has since disabled the “Expert Review” feature, according to a LinkedIn post by Superhuman CEO Shishir Mehrotra. While Mehrotra offered an apology, he continued to defend the idea of the feature.
“Imagine your professor sharpening your essay, your sales leader reshaping a customer pitch, a thoughtful critic challenging your arguments, or a leading expert elevating your proposal,” he wrote. “For experts, this is a chance to build that same ubiquitous bond with users, much like Grammarly has.”
