Top Tech Startups in Seattle, WA in 2026

AI companies are flying blind on cost. They know their AWS bill. They don't know which product, customer, or feature is eating their margin. Finance leaders at AI-native companies are stuck piecing together cost data from dashboards built for engineers. By the time they have a clear picture, the decision window has passed. Tonifo is the cost intelligence layer built for the finance side of AI. We give CFOs and finance teams real-time visibility into which products are profitable, which customers are driving spend, and where AI API costs are eroding margin, without needing an engineering ticket to get the answer. We're pre-seed, moving fast, and talking to finance leaders at AI companies who are tired of not having the numbers they need to make calls with confidence.

Sapience AI specializes in creating domain-specific, vertically focused foundational models and agentic ecosystems infused with advanced human-in-the-loop collaboration from industry subject matter experts and professional communities. This blend of advanced AI and human cognition forms a genius collective "hive mind" — creating a secure, proprietary intelligent system that enhances collaboration and productivity and redefines human potential — the expert part that moves decisions, strategy, actions and ROI — to focus on the outcomes that matter most, and get them done. Harnessing the power of safe, superintelligent AI, Sapience AI delivers meaningful, lasting impact across professional communities, vertical industries, academic institutions, research organizations, and society.

Feather is building an all-in-one financial benefits platform for startups. Our first product makes it easy and affordable for startups to offer 401(k) without worrying about compliance and administration. Feather helps startups offer 401(k) to founders and early team, while saving them time and money.

At Vyvora, we're building more than a fitness app—we're building a company focused on helping people live healthier lives through technology. We value ownership, curiosity, transparency, and continuous learning. Every team member is encouraged to take initiative, challenge ideas, and contribute beyond their job title. We believe in moving quickly, building thoughtfully, and constantly improving based on user feedback. As an early-stage startup, we work remotely with flexible schedules and focus on results rather than hours worked. Communication is open and direct, with regular planning sessions and asynchronous collaboration. We're looking for people who enjoy solving meaningful problems, thrive in fast-paced environments, and want to help shape both the product and the company from the ground up.