Tech
Not all cancer patients need chemo. Ataraxis AI raised $20M to fix that.
Artificial intelligence is a big trend in cancer care, and it’s mostly focused detecting cancer at the earliest possible stage. That makes a lot of sense, given that cancer is less deadly the earlier it’s detected.
But fewer are asking another fundamental question: if someone does have cancer, is an aggressive treatment like chemotherapy necessary? That’s the problem Ataraxis AI is trying to solve.
The New York-based startup is focused on using AI to accurately predict not only if a patient has cancer, but also what their cancer outcome looks like in 5 to 10 years. If there’s only a small chance of the cancer coming back, chemo can be avoided altogether – saving a lot of money, while avoiding the treatment’s notorious side effects.
Ataraxis AI now plans to launch their first commercial test, for breast cancer, to U.S. oncologists in the coming months, its co-founder Jan Witowski tells TechCrunch. To bolster the launch and expand into other types of cancer, the startup has raised a $20.4 million Series A, it told TechCrunch exclusively.
The round was led by AIX Ventures with participation from Thiel Bio, Founders Fund, Floating Point, Bertelsmann, and existing investors Giant Ventures and Obvious Ventures. Ataraxis emerged from stealth last year with a $4 million seed round.
Ataraxis was co-founded by Witowski and Krzysztof Geras, an assistant professor at NYU’s medical school who focuses on AI.
Ataraxis’ tech is powered by an AI model that extracts information from high-resolution images of cancer cells. The model is trained on hundreds of millions of real images from thousands of patients, Witowski said. A recent study showed Ataraxis’ tech was 30% more accurate than the current standard of care for breast cancer, per Ataraxis.
Long term, Ataraxis has big ambitions. It wants its tests to impact at least half of new cancer cases by 2030. It also views itself as a frontier AI company that builds its own models, touting Meta’s chief AI scientist Yann LeCun as an AI advisor.
“I think at Ataraxis we are trying to build what is essentially an AI frontier lab, but for healthcare applications,” Witowski said. “Because so many of those problems require a very novel technology.”
The AI boom has led to a rush of fundraises for cancer care startups. Valar Labs raised $22 million to help patients figure out their treatment plan in May 2024, for example. There’s also a bevvy of AI-powered drug discovery firms in the cancer space, like Manas AI which raised $24.6 million in January 2025 and was co-founded by Reid Hoffman, the LinkedIn co-founder.
Tech
Tesla brings its robotaxi service to Dallas and Houston
Tesla is expanding its robotaxi service to Dallas and Houston, according to a social media post from the company.
The post says simply that “Robotaxi is now rolling out in Dallas & Houston 🤠” and includes a 14-second video showing Tesla vehicles driving without human monitors or drivers in the front seat.
The company now offers robotaxi service in three cities, all of them in Texas, after launching in Austin last year and starting to offer rides without safety drivers in January 2026. In a February filing, Tesla said that its Austin robotaxis have been involved in 14 crashes since launch.
It also offers a more limited ride service with human drivers in the San Francisco Bay Area.
Tesla may not be running many vehicles in either of these new markets yet, with crowdsourced data on the Robotaxi Tracker website only registering a single vehicle in each city (compared to 46 active vehicles logged in Austin).
Tech
Netflix plans to add a vertical video feed, use AI for recommendations
Netflix is going to launch a TikTok-like vertical video feed within its apps this month, and plans to use AI broadly for content creation and recommendations, the company said on Thursday.
Netflix has been testing a vertical video feed since last year. The short video feature could aid users with discovering video podcasts, along with the current slate of shows and movies. The company is also leaning more into using AI for recommendations after launching a ChatGPT-powered search feature last year.
“We have been in personalization and recommendation for two decades, but we still see tremendous room to make it better by leveraging newer technologies,” Netflix co-CEO Gregory Peters said during the company’s first-quarter conference call. “Recommendation systems based on new model architectures not only improve current personalization but also let us iterate and improve more quickly — adding support for different content types much more efficiently.”
Co-CEO Ted Sarandos said he sees AI tools improving the entire content creation process. “In general, we expect GenAI to make content better; better tools, better processes […] It takes a great artist to make great art, and AI won’t change that. But AI will give those artists better tools to bring those visions to life,” he said.
Last month, Netflix bought Ben Affleck’s AI creation company InterPositive, which, Sarandos said, has garnered interest from creators.
“With our acquisition of InterPositive, we think it accelerates our GenAI capability because it is proprietary technology created specifically for filmmakers and filmmaking, different from other GenAI video applications. While our ownership of InterPositive is very new, we have generated interest with creators who have spent time with the tools, and we are seeing momentum build around adoption,” he noted.
Netflix also mentioned that it wants to use AI to improve its ad suite, and allow for new formats and customization to get better returns. The company expects to generate ad revenue of $3 billion this year.
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Netflix reported revenue of $12.25 billion in Q1 2026, up 16.2% year-year-year, and said profit jumped 83% to $5.28 billion. Alongside the first-quarter results, Netflix said its co-founder and chair, Reed Hastings, is leaving the company’s board this summer.
Notably, the company hiked subscription prices in the U.S. late last month, which could have a positive impact next quarter. The company said it ended 2025 with 325 million paying subscribers.
Tech
Bluesky confirms DDoS attack is cause of continued app outages
Bluesky’s website and app are still struggling on Friday after experiencing service interruptions that chief operating officer Rose Wang attributed to an ongoing cyberattack.
On Thursday evening, the social media company confirmed that a “sophisticated Distributed Denial-of-Service (DDoS) attack” was to blame for the issues, which had originally started on April 15 at around 8:40 p.m. ET.
Distributed denial-of-service attacks often involve pummeling apps or websites with large amounts of junk web traffic aimed at overloading and knocking its servers offline. While these kinds of cyberattacks do not involve intrusions into a company’s systems, these incidents can still be disruptive to both the company and its users.
In a post on the Bluesky account, the company shared the cause of the problem and noted that the attack was “impacting our operations, with users experiencing intermittent interruptions in service for their feeds, notifications, threads, and search.”
Bluesky said that it has not seen any evidence of unauthorized access to private data, however.
When originally reached for comment on Thursday, Bluesky only pointed us to the status.bsky.app page and account (@status.bsky.app) for updates. The company did not provide an estimated time for a fix.
The network’s status page is currently not working, however.
Bluesky said it will provide another update on the status of the attack and its mitigation by 1 p.m. ET on Friday.
Because the outages are intermittent, the Bluesky site and app will load at times, slowly, and other times will display error messages.
For instance, switching to a particular feed within the app could display a message that says, “This feed is currently receiving high traffic and is temporarily unavailable. Please try again later. Message from server: Rate Limit Exceeded.”
Popular feeds like Discover or the official Bluesky Team’s feed often see this problem, even as users’ own personal feeds are functional.
Other times, like when trying to visit a user’s profile, the site will display an error message, forcing you to refresh and try again.
Bluesky protocol engineer Bryan Newbold remarked around 3:46 a.m. ET on Wednesday, “oof, our services are getting hit pretty hard tonight.”
Notably, the service disruptions are impacting Bluesky, but other communities, like Blacksky, that run their own infrastructure on the underlying protocol that powers the decentralized social network, are still functioning.
Blacksky’s team told TechCrunch that the Bluesky outage has led to a “significant spike” in migration requests from Bluesky users over the past 12 hours, as users, devs, and other ATmosphere founders like Sebastian at Eurosky have been promoting its services.
It was clear that Bluesky’s team was in a hectic state this week while facing these issues, as one message on its status page had a typo: ” investigating an incident with service in one of our reginos [sic].”
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