Top Tech Startups in United States in 2027

Layer Health is a health technology company that utilizes AI and large language models to streamline medical chart reviews. Layer Health's AI platform uses large language models (LLMs) trained on extensive patient data over time. This technology enables healthcare systems to analyze and interpret both structured and unstructured clinical information with an accuracy comparable to that of clinicians. In contrast to conventional software solutions that predominantly depend on fixed rules, Layer Health’s AI operates with a reasoning approach akin to that of a clinician, allowing it to navigate highly nuanced and intricate situations throughout a patient's complete medical record.

Ivo was founded by a contract attorney and built by a team of lawyers, technologists, and operators with deep experience in contract work. We've experienced firsthand how manual, fragmented contract workflows slow down business, introduce risk, and drain legal teams. That perspective informed our flagship product: an AI-powered redlining tool that helps teams move faster—without compromising legal judgment. Since then, Ivo has grown into a broader platform, serving not just in-house legal teams, but also procurement, sales, and other key business functions. In addition to AI redlining, our suite includes a smart repository for organizing and managing contracts, and a powerful agentic assistant that helps teams get answers fast—always backed by source-grounded context. Originally founded in New Zealand and now headquartered in San Francisco, Ivo is backed by top-tier investors and trusted by global enterprises and fast-growing startups. We’re proud to support some of the most innovative teams in the world at companies like Pinterest, Quora, and Canva—and we’d love to support yours, too.

Mercor partners with leading AI labs and enterprises to train frontier models using human expertise. With a talent network of more than 30,000 people across hundreds of domains, Mercor is building a new category of work where expertise powers AI advancement. While computing power and engineering talent have advanced rapidly, AI models can only improve when they learn from real human expertise across disciplines like law, medicine, coding, and finance. Mercor bridges this gap by connecting top professionals with frontier AI labs, enabling them to share insights, provide expert feedback, and shape the reasoning capabilities of next-generation models. Backed by $350 million in Series C funding led by Felicis, with Benchmark, General Catalyst, and Robinhood Ventures, Mercor is now valued at $10 billion. At its core, Mercor’s culture thrives on impact, agility, and growth. Mercor powers its teams to build at the frontier of technology.

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AI Business Boomer is an implementation-first AI automation service led by Sam Monac. We help small business owners and operators use practical AI systems to save time, respond to leads faster, reduce manual admin, and make day-to-day operations more repeatable. Our work is not abstract AI consulting. We build useful workflows around real business bottlenecks: missed calls, slow follow-up, invoice reminders, intake forms, scheduling, customer communication, reporting, websites, and operational handoffs. Interns joining AI Business Boomer work close to real business problems, live tools, customer-facing pages, automation workflows, content systems, QA, research, outreach, and growth operations. The work is hands-on, fast-moving, and useful for candidates who want practical experience building with AI instead of only talking about it.

Alto Cirra is an atmospheric technology company building the next generation of precipitation enhancement systems. Headquartered in Salt Lake City, Utah, Alto Cirra combines advanced unmanned aircraft systems, atmospheric science, and real-time meteorological intelligence to modernize cloud seeding operations. Our mission is to make precipitation enhancement more accessible, precise, scalable, and cost-effective for the communities and industries that depend on reliable water resources. Through autonomous drone technology and data-driven operations, we're developing a more efficient approach to cloud seeding—helping support mountain snowpack, water availability, and long-term water resilience. Working alongside leading research institutions, industry partners, and existing cloud seeding operators, Alto Cirra is advancing the technology and infrastructure needed to bring modern precipitation enhancement capabilities to markets around the world. From mountain resorts and agricultural communities to utilities and water management agencies, we're building solutions designed to help address one of the world's most pressing challenges: water security. Innovation above. Impact below.

We sell designer optical frames, top quality lenses, and contact lenses. Our team of 5 full time optometrists perform eye exams 7 days a week. We love to have fun at work with our patients and with each other while delivering a memorable eye care experience from pretest to eye exam to a fresh new pair of sunglasses and glasses.

Tenor is the AI for leadership development. We're on a mission to make every manager more effective at the world's best companies using the power of AI-powered role-play and coaching.