AfterQuery Becomes Fastest Unicorn in Y Combinator’s History
- AfterQuery, an AI startup, achieved a $3.2 billion valuation, up from $300 million five months ago.
- The company was founded by Spencer Mateega and Carlos Georgescu in February 2025.
- Y Combinator partner Gustaf Alströmer noted it as the fastest startup to reach unicorn status in the accelerator’s history.
- AfterQuery pays specialists to produce expert reasoning data for training AI models.
- Clients include Nvidia and former OpenAI CTO Mira Murati’s Thinking Machines Lab.
AfterQuery has rapidly increased its valuation due to its innovative approach of using expert-generated data to train AI models, filling a gap left by traditional web-scraping methods. This strategy has attracted significant interest from major players like Nvidia and other industry leaders.
The company’s unique model of leveraging specialized human insight for AI training has positioned it at the forefront of the industry, achieving remarkable growth in a short period and setting a new benchmark within Y Combinator’s portfolio. (Source)
