Y Combinator hosted the day of the summer show 2025 last week, presenting the last lot of over 160 newly established businesses.
As with recent lots, the majority of newly established businesses have presented AI-central solutions. However, a clear development was evident. Instead of “powered by AI” products, many companies are now manufacturing AI agents or the infrastructure and tools needed to develop them. For example, this lot had a turbulence of Voice AI solutions and new businesses that focused on providing assistance to others to generate revenue from the “AI economy” with marketing ads and tools.
We talked with a handful of investors focusing on YC to find out what new businesses found the most interesting and created the highest investment demand.
Below are the most commonly mentioned:
What is it doing: Stripe for newly established AI companies
Why is it a favorite: Many newly established AI companies use complex pricing models that often combine a flat subscription per position with use based on use, credits and various expenses. Managing the complex AI pricing on the lane is a time -consuming, manual process. That is why autumn developed an open source infrastructure that simplifies the integration of the stripe for the newly established AI companies. The company says its technology is already used by hundreds of AI applications and 40 newly established YC companies. Given the sovereignty of stripe in payments and explosive development of the AI market, could a specialized billing solution for AI be the next major Fintech success story?
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What is it doing: Creates Vercel for agents AI
Why is it a favorite: Just as Vercel helps developers to develop and host newly established businesses, Dedalus Labs claims that its platform automate the AI agents infrastructure, cutting hours of coding in a few clicks. The company is handling complex tasks such as self -destruction and cargo balance, which says it makes the agent’s development quick and simple.
What is it doing: Crowdsource Rankings of Vibe Codified Plans
Why is it a favorite: AI’s ability to quickly produce a huge number of designs creates a new problem: Calculating which is really good. Design Arena solves it by ranking with crowdsourcing ranking of the AI opticians, creating a feedback loop that forces AI models to improve. Large AI laboratories see the value of training their models to create better designs, as some of them are already the customers of Arena Design.
What is it doing: Distributor of Technology for Retairs in Southeast Asia
Why is it a favorite: The Getasap Asia was founded by Raghav Arara three years ago when he was just 14 years old. Since then, the starting technology to deliver supplies to corner stores, restaurants and large supermarkets in Southeast Asia in less than eight hours has earned millions of revenue. Getasap Asia closed a round from the general catalyst, according to her own websiteAnd we hear that the starting valuation was one of the highest in the whole lot.
What is it doing: AI engineer who corrects errors in production
Why is it a favorite: Founded by a 20 -year -old Pablo Hansen, who won a master’s degree in AI last year, Keystone is on a mission to reduce software breaks. The company’s AI finds and corrects customers such as Lovable and has already rejected an offer of seven authentic acquisition, Hansen said.
What is it doing: AI Matchmaker for Friends Friends
Why is it a favorite: While there is no lack of dating applications, Realroots faces a different kind of loneliness. The company’s AI bumper, Lisa, interviews with women and then organizes social experiences to connect them with compatible friends. While the AI section may be executive – talks with Lisa would probably not give realroots more knowledge about participants than written answers – Realroots may be in something. Last month, the company created $ 782,000 from 9,000 customers paying, its founders said.
What is it doing: Automates insurance claims with AI
Why is it a favorite: Solva’s AI automates the most common tasks for insurance regulators, from completing complex claims to prevent inappropriate payments. Just ten weeks after starting, Solva has already raised $ 245,000 in annual repetitive revenue (ARR), a person who has excited investors.
What is it doing: Reverse-Drone mini-crops
Why is it a favorite: With China referenced By accumulating flocks of autumn, the US military faces an urgent need for cost -effective contrast solutions. Perseus develops exactly this: small rockets designed to break the aircraft to a fraction of the cost of existing systems. Multiple US Army branches have already called on the start to show its solution, which could lead to large contracts.
What is it doing: Ai foreign language teacher
Why is it a favorite: Applications like Duolingo have made language learning accessible and fun, but often do not have a key element of fluency: consistent conversation. Pingo resolves this problem by allowing users to talk to its AI, which acts as an inherent speaker. The company’s only approach proves incredibly popular, with founders claiming to increase 70% per month and earning $ 250,000 in monthly revenue.
