At Y Combinator’s Spring 2025 Demo Day on Wednesday, nearly every presenting startup had something to do with AI — they’re either developing AI agents or creating tools to facilitate their development.
Indeed, several founders seem to be taking a leaf out of the pages of several successful AI startups: about half a dozen startups were presenting variations of “Cursor for X.” For example, Den is building a “Cursor for knowledge workers,” and Vessence is on its way to make a “Cursor for lawyers.”
It wasn’t all only about AI, though. We noticed several startups are working on robotics, which seems to be having a bit of a revival at the moment.
Below are some of the startups that caught both investors’ and our attention.
Anvil
What it does: SEO for LLMs
Why it’s a fave: How people search for content is changing, with folks using various AI tools like ChatGPT, Gemini, Perplexity to find content. Understandably, brands need to find a way to increase their visibility on these platforms. Anvil claims it helps brands measure, optimize and increase their presence on these AI tools.
Atum Works
What it does: Builds 3D chips
Why it’s a fave: Transistors aren’t getting smaller as fast as they used to, so Atum’s founders propose the best new way to put more transistors on a chip, and therefore increase processing power, is to stack them in three dimensions. Investors told me that Atum’s vision is so revolutionary that the company has a chance to become the next NVIDIA.
Auctor
What it does: Automates enterprise software implementation
Why it’s a fave: The startup says prominent software vendors like SAP, ServiceNow, AWS and Box have already reached out …