Tech
Venture capitalists continue to play musical chairs

From Keith Rabois to Ethan Kurzweil, a lot of VCs have switched firms or spun out of storied VC institutions to launch their own funds this year. These employment changes are surprising because unlike in many other fields, venture capitalists don’t traditionally move around very much — especially those who reach the partner or general partner level.
VC funds have 10-year life cycles, and partners have good reason to stay that course. In some instances, there may be a “key man” on a firm’s fund, meaning that if they leave, the fund’s LPs have the right to pull their capital out if they choose. Many partners and GPs also have some of their own money invested in their firms’ funds, which gives them further reason to stick around.
So, while big-name investor moves in venture capital aren’t common, they seem to have become so in recent months. So far this year, there have been notable instances of investors returning to old firms, striking out on their own, or taking a pause from investing entirely.
Here’s who we know of so far:
September
- James da Costa announced on September 17 that he was joining Andreessen Horowitz as a partner focused on B2B software and financial services. This marks da Costa’s first foray into venture investing; he was previously the co-founder of Fingo, an African neobank.
- On September 11, Jacob Westphal announced that he was leaving Andreessen Horowitz. Westphal was a partner at a16z for three and a half years. He left to become the portfolio lead at Will Ventures.
August
- Freestyle VC announced on August 15 that Maria Palma had joined the firm as a general partner based in San Francisco. Palma was most recently a general partner at Kindred Capital, based in London. Palma has backed companies such as Moov, Novo, and Lottie.
July
- After nearly seven years, Alex Cook is getting ready to leave Tiger Global, sources familiar with the matter tell TechCrunch. While at Tiger Global, Cook led deals including TradingView, Scalapay and TrueLayer, among others. Prior to Tiger Global, Cook worked at Apollo.
- Bessemer Venture Partners announced it added Lauri Moore as a partner on July 22. Moore was previously a partner at Foundation Capital for two years and an operator at LinkedIn before that. Moore will be focused on early-stage investments in sectors including data, AI and developer tools.
- On July 17, DCVC announced it had brought on Milo Werner as a general partner to lead the firm’s climate investing practice. The firm is currently raising its first dedicated climate fund. Werner was most recently a general partner at Engine Ventures for two and a half years. Werner was a partner at Ajax Strategies prior to that.
- Anne Lee Skates announced on July 11 that she had left Andreessen Horowitz where she had been a partner on the consumer team since 2019. She added that she’s off to do her “life’s work” and will post more about her future plans soon. At Andreessen, she backed companies including Whatnot, Kindred and Prisms, among others.
June
- On June 17, Spencer Peterson announced that he’d left Bedrock, where he served as partner for five years, to become a general partner at Coatue. Peterson is an investor in companies including OpenAI and Rippling, among others.
- Amanda “Robby” Robson announced her departure from Cowboy Ventures in a LinkedIn post in early June. Robson had been at Cowboy Ventures since October 2019 and at Norwest Venture Partners for three years prior to that. Robson plans to launch a fund of her own.
May
- Serena Ventures founding partner Alison Stillman announced she’d stepped back from the firm on May 14 after a nearly six-year run working with tennis star Serena Williams. Stillman did not announce her next step.
- Terri Burns announced on May 13 that she was launching a new venture firm called Type Capital. Burns was previously the first Black woman partner at GV and left the firm back in 2022. Her new fund will focus on pre-seed and seed-stage startups.
- Last week TechCrunch scooped that Fika Ventures co-founder Eva Ho was going to transition out of the firm after Fika finished deploying its current fund. Ho is stepping back for personal reasons. The move was confirmed by the firm in a blog post on May 9.
- On May 9, Alison Lange Engel announced she was taking on the role of CEO at Ceros, an AI-powered design company. Lange Engel left Greycroft in December, where she had been a partner since 2019, to take the role.
- After 15 years, Vic Singh announced on X that he was stepping down from Eniac Ventures on May 1. Singh helped launch the firm in 2009 and is planning to launch a new firm of his own.
April
- On April 30, Ethan Kurzweil announced he was leaving his role as partner at Bessemer Venture Partners after 16 years. Kurzweil will be launching an early-stage-focused investment firm, according to reporting from Axios. Kurzweil will launch the firm with Kristina Shen, who left Andreessen Horowitz after four years on March 29, and Mark Goldberg, who left Index Ventures after eight years last fall.
- On April 1, Christina Farr announced that she’d be leaving OMERS Ventures, where she has served as a principal investor and the lead of the firm’s health tech practice since December 2020. Farr announced on X that she’d be working on her health tech newsletter, writing a book focused on the power that storytelling can have on businesses, and consulting health tech founders.
March
- After six years as a partner at Accel, Ethan Choi announced that he’d be leaving the firm to head to Khosla Ventures in March. Choi will be focused on growth-stage investing at his new firm and has backed such companies as Klaviyo, Pismo and 1Password.
- While many of the recent VC moves have been by folks looking to start something new, or take on a different opportunity, not all of them have been. On March 13, Chamath Palihapitiya’s Social Capital announced that it fired partners Jay Zaveri and Ravi Tanuku. Bloomberg reported that this was due to a matter involving raising money for AI startup Groq.
- Rabois was not the only person looking to boomerang back to an old haunt in this recent rise of investor reshuffling. On March 5, Miles Grimshaw announced that he’d be returning to Thrive Capital as a general partner after serving the same position at Benchmark Capital for three years. Grimshaw originally started at Thrive Capital in 2013 and has backed such companies as Airtable, Lattice, and Monzo, among others.
- While transitioning from operator to VC is a common career progression in the startup ecosystem, it isn’t for everybody. On March 4, Sam Blond announced he had come to that conclusion and would be leaving Founders Fund, where he had been a partner for about 18 months. Blond said he would return to operating and has held roles at companies such as Brex, Zenefits and EchoSign.
January
- After 12 years at Andreessen Horowitz, Connie Chan announced she was leaving the firm on January 23. Chan had served as one of the firm’s general partners the last five years and has backed companies such as Cider, KoBold and Whatnot.
- Famed venture investor Keith Rabois announced on January 9 that he was leaving Founders Fund to return to Khosla Ventures. Rabois had been a general partner at Founders Fund for nearly five years; he returned to Khosla as a managing director, his prior role.
TechCrunch is monitoring the recent venture moves and will continue to update this article as they happen. If you have any tips or callouts to bring to our attention, contact me here: rebecca.szkutak@techcrunch.com.
This post was originally published on May 1. It has since been updated on May 13, July 12, August 15 and September 23 to include additional moves within venture.
This post has been updated to better reflect Anne Lee Skates’ investments at Andreessen Horowitz.
Tech
Volkswagen’s cheapest EV ever is the first to use Rivian software

Volkswagen’s ultra-cheap EV called the ID EVERY1 — a small four-door hatchback revealed Wednesday — will be the first to roll out with software and architecture from Rivian, according to a source familiar with the new model.
The EV is expected to go into production in 2027 with a starting price of 20,000 euros ($21,500). A second EV called the ID.2all, which will be priced in the 25,000 euro price category, will be available in 2026. Both vehicles are part of the automaker’s new of category electric urban front-wheel drive cars that are being developing under the so-called “Brand Group Core” that makes up the volume brands in the VW Group. And both vehicles are for the European market.
The EVERY1 will be the first to ship with Rivian’s vehicle architecture and software as part of a $5.8 billion joint venture struck last year between the German automaker and U.S. EV maker. The ID.2all is based on the E3 1.1 architecture and software developed by VW’s software unit Cariad.
VW didn’t name Rivian in its reveal Wednesday, although there were numerous nods to next-generation software. Kai Grünitz, member of the Volkswagen Brand Board of Management responsible for Technical Development, noted it would be the first model in the entire VW Group to use a “fundamentally new, particularly powerful software architecture.”
“This means the future entry-level Volkswagen can be equipped with new functions throughout its entire life cycle,” he said. “Even after purchase of a new car, the small Volkswagen can still be individually adapted to customer needs.”
Sources who didn’t want to be named because they were not authorized to speak publicly, confirmed to TechCrunch that Rivian’s software will be in the ID EVERY1 EV. TechCrunch has reached out to Rivian and VW and will update the article if the companies respond.
The new joint venture provides Rivian with a needed influx of cash and the opportunity to diversify its business. Meanwhile, VW Group gains a next-generation electrical architecture and software for EVs that will help it better compete. Both companies have said that the joint venture, called Rivian and Volkswagen Group Technologies, will reduce development costs and help scale new technologies more quickly.
The joint venture is a 50-50 partnership with co-CEOs. Rivian’s head of software, Wassym Bensaid, and Volkswagen Group’s chief technical engineer, Carsten Helbing, will lead the joint venture. The team will be based initially in Palo Alto, California. Three other sites are in development in North America and Europe, the companies have previously said.

“The ID. EVERY1 represents the last piece of the puzzle on our way to the widest model selection in the volume segment,” Thomas Schäfer, CEO of the Volkswagen Passenger Cars brand and Head of the Brand Group Core, said in a statement. “We will then offer every customer the right car with the right drive system–including affordable all-electric entry-level mobility. Our goal is to be the world’s technologically leading high-volume manufacturer by 2030. And as a brand for everyone–just as you would expect from Volkswagen.”
The Volkswagen ID EVERY1 is just a concept for now — and with only a few details attached to the unveiling. The concept vehicle reaches a top speed of 130 km/h (80 miles per hour) and is powered by a newly developed electric drive motor with 70 kW, according to Volkswagen. The German automaker said the range on the EVERY1 will be at least 250 kilometers (150 miles). The vehicle is small but larger than VW’s former UP! vehicle. The company said it will have enough space for four people and a luggage compartment volume of 305 liters.
Tech
The hottest AI models, what they do, and how to use them

AI models are being cranked out at a dizzying pace, by everyone from Big Tech companies like Google to startups like OpenAI and Anthropic. Keeping track of the latest ones can be overwhelming.
Adding to the confusion is that AI models are often promoted based on industry benchmarks. But these technical metrics often reveal little about how real people and companies actually use them.
To cut through the noise, TechCrunch has compiled an overview of the most advanced AI models released since 2024, with details on how to use them and what they’re best for. We’ll keep this list updated with the latest launches, too.
There are literally over a million AI models out there: Hugging Face, for example, hosts over 1.4 million. So this list might miss some models that perform better, in one way or another.
AI models released in 2025
Cohere’s Aya Vision
Cohere released a multimodal model called Aya Vision that it claims is best in class at doing things like captioning images and answering questions about photos. It also excels in languages other than English, unlike other models, Cohere claims. It is available for free on WhatsApp.
OpenAI’s GPT 4.5 ‘Orion’
OpenAI calls Orion their largest model to date, touting its strong “world knowledge” and “emotional intelligence.” However, it underperforms on certain benchmarks compared to newer reasoning models. Orion is available to subscribers of OpenAI’s $200 a month plan.
Claude Sonnet 3.7
Anthropic says this is the industry’s first ‘hybrid’ reasoning model, because it can both fire off quick answers and really think things through when needed. It also gives users control over how long the model can think for, per Anthropic. Sonnet 3.7 is available to all Claude users, but heavier users will need a $20 a month Pro plan.
xAI’s Grok 3
Grok 3 is the latest flagship model from Elon Musk-founded startup xAI. It’s claimed to outperform other leading models on math, science, and coding. The model requires X Premium (which is $50 a month.) After one study found Grok 2 leaned left, Musk pledged to shift Grok more “politically neutral” but it’s not yet clear if that’s been achieved.
OpenAI o3-mini
This is OpenAI’s latest reasoning model and is optimized for STEM-related tasks like coding, math, and science. It’s not OpenAI’s most powerful model but because it’s smaller, the company says it’s significantly lower cost. It is available for free but requires a subscription for heavy users.
OpenAI Deep Research
OpenAI’s Deep Research is designed for doing in-depth research on a topic with clear citations. This service is only available with ChatGPT’s $200 per month Pro subscription. OpenAI recommends it for everything from science to shopping research, but beware that hallucinations remain a problem for AI.
Mistral Le Chat
Mistral has launched app versions of Le Chat, a multimodal AI personal assistant. Mistral claims Le Chat responds faster than any other chatbot. It also has a paid version with up-to-date journalism from the AFP. Tests from Le Monde found Le Chat’s performance impressive, although it made more errors than ChatGPT.
OpenAI Operator
OpenAI’s Operator is meant to be a personal intern that can do things independently, like help you buy groceries. It requires a $200 a month ChatGPT Pro subscription. AI agents hold a lot of promise, but they’re still experimental: a Washington Post reviewer says Operator decided on its own to order a dozen eggs for $31, paid with the reviewer’s credit card.
Google Gemini 2.0 Pro Experimental
Google Gemini’s much-awaited flagship model says it excels at coding and understanding general knowledge. It also has a super-long context window of 2 million tokens, helping users who need to quickly process massive chunks of text. The service requires (at minimum) a Google One AI Premium subscription of $19.99 a month.
AI models released in 2024
DeepSeek R1
This Chinese AI model took Silicon Valley by storm. DeepSeek’s R1 performs well on coding and math, while its open source nature means anyone can run it locally. Plus, it’s free. However, R1 integrates Chinese government censorship and faces rising bans for potentially sending user data back to China.
Gemini Deep Research
Deep Research summarizes Google’s search results in a simple and well-cited document. The service is helpful for students and anyone else who needs a quick research summary. However, its quality isn’t nearly as good as an actual peer-reviewed paper. Deep Research requires a $19.99 Google One AI Premium subscription.
Meta Llama 3.3 70B
This is the newest and most advanced version of Meta’s open source Llama AI models. Meta has touted this version as its cheapest and most efficient yet, especially for math, general knowledge, and instruction following. It is free and open source.
OpenAI Sora
Sora is a model that creates realistic videos based on text. While it can generate entire scenes rather than just clips, OpenAI admits that it often generates “unrealistic physics.” It’s currently only available on paid versions of ChatGPT, starting with Plus, which is $20 a month.
Alibaba Qwen QwQ-32B-Preview
This model is one of the few to rival OpenAI’s o1 on certain industry benchmarks, excelling in math and coding. Ironically for a “reasoning model,” it has “room for improvement in common sense reasoning,” Alibaba says. It also incorporates Chinese government censorship, TechCrunch testing shows. It’s free and open source.
Anthropic’s Computer Use
Claude’s Computer Use is meant to take control of your computer to complete tasks like coding or booking a plane ticket, making it a predecessor of OpenAI’s Operator. Computer use, however, remains in beta. Pricing is via API: $0.80 per million tokens of input and $4 per million tokens of output.
x.AI’s Grok 2
Elon Musk’s AI company, x.AI, has launched an enhanced version of its flagship Grok 2 chatbot it claims is “three times faster.” Free users are limited to 10 questions every two hours on Grok, while subscribers to X’s Premium and Premium+ plans enjoy higher usage limits. x.AI also launched an image generator, Aurora, that produces highly photorealistic images, including some graphic or violent content.
OpenAI o1
OpenAI’s o1 family is meant to produce better answers by “thinking” through responses through a hidden reasoning feature. The model excels at coding, math, and safety, OpenAI claims, but has issues deceiving humans, too. Using o1 requires subscribing to ChatGPT Plus, which is $20 a month.
Anthropic’s Claude Sonnet 3.5
Claude Sonnet 3.5 is a model Anthropic claims as being best in class. It’s become known for its coding capabilities and is considered a tech insider’s chatbot of choice. The model can be accessed for free on Claude although heavy users will need a $20 monthly Pro subscription. While it can understand images, it can’t generate them.
OpenAI GPT 4o-mini
OpenAI has touted GPT 4o-mini as its most affordable and fastest model yet thanks to its small size. It’s meant to enable a broad range of tasks like powering customer service chatbots. The model is available on ChatGPT’s free tier. It’s better suited for high-volume simple tasks compared to more complex ones.
Cohere Command R+
Cohere’s Command R+ model excels at complex Retrieval-Augmented Generation (or RAG) applications for enterprises. That means it can find and cite specific pieces of information really well. (The inventor of RAG actually works at Cohere.) Still, RAG doesn’t fully solve AI’s hallucination problem.
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.