Bluejay.
Business Overview: AI agent testing/quality assurance. Provides a system that uses synthetic users to quickly verify whether voice agents and other AI agents function accurately in a variety of real-world situations (different languages, accents, background noise, personalities, etc.).

Founding Background:

Both co-founders are 23 years old.

Previously, they were engineers at Amazon and Microsoft.

Founded at Hacker House in San Francisco and participated in YC S25 (see below for details).

Funding:

$4M in seed funding in 2025.

Investors include Floodgate (lead), Y Combinator, Peak XV, and Homebrew.

Additionally, individual executives from Hippocratic AI, Deepgram, and PathAI also participated.

Bluejay is an AI agent testing and quality assurance startup founded by two 23-year-old former engineers from Amazon and Microsoft, Rohan Vasishth and Faraz Siddiqi. The company is based in San Francisco and emerged from a hacker house. It participated in Y Combinator’s Spring 2025 batch (S25). Bluejay provides a platform that uses synthetic users to rigorously test AI voice and text agents for accuracy and reliability in diverse real-world conditions such as different languages, accents, background noises, and user personalities. Their technology can simulate a month’s worth of customer interactions in just minutes, allowing companies to detect potential failures early and improve AI agent performance.

In 2025, Bluejay raised $4 million in seed funding led by Floodgate, with participation from Y Combinator, Peak XV, Homebrew, and individual executives from Hippocratic AI, Deepgram, and PathAI. The startup is focused on creating a “trust layer” for AI agents to support enterprise adoption by improving testing beyond traditional manual methods through human simulation of customer interactions. The founders emphasize rapid learning and agility, reflecting a new generation of AI entrepreneurs tackling critical challenges in AI deployment.

Key Points:

• Founders: Rohan Vasishth (ex-Amazon), Faraz Siddiqi (ex-Microsoft), both 23 years old
• Founded at: San Francisco hacker house
• Accelerator: Y Combinator Spring 2025 (S25)
• Funding: $4M seed round led by Floodgate, including Y Combinator, Peak XV, Homebrew, and AI execs
• Product: AI agent testing platform using synthetic users to simulate diverse customer interactions
• Use cases: Voice and text AI agents tested against various languages, accents, background noise, and personalities
• Value proposition: Compress a month of AI interaction testing into minutes, ensuring AI reliability for enterprises
• Market positioning: Focus on enterprise AI to build trust and scalable adoption through better test suites and automation
• Culture: Scrappy startup mentality with fun branding and grassroots marketing efforts