Instinct

Instinct was founded in 2025 by Noah Shinn and is headquartered in San Francisco, where it operates as Spear Street Technology, Inc. Its personal agent works over text messages and phone calls, connects to a user's apps and devices, and completes tasks with its own phone number and computer, from booking flights, hotels and restaurants to buying groceries, paying bills and canceling subscriptions. The service opened by invitation in August 2026 and has added Instinct Concierge, which places calls for users, and group chats where one agent works for several people. Users check out bookings and purchases inside the conversation, and Shinn has said the platform is approaching $1 billion in annual transaction volume, with more than half of it in travel. In August 2026 Instinct raised a $250 million Series B co-led by Index Ventures and Benchmark at a $2.5 billion valuation, bringing its total to $350 million. On September 28, 2026 it raised a $1 billion Series C from Sequoia Capital, Benchmark and Coatue at a $10 billion valuation.