Top Enterprise Software Startups in United States

Inaccuracies (bias, hallucination, non-determinism, etc.) from AI models, stemming from flawed data, imperfect prompts, or misinterpretations, can cause significant harm and erode trust across many industries. The impact ranges from just not quite correct and inconvenience in less critical applications to serious financial losses, safety risks, legal liability, and discrimination in high-stakes fields like healthcare, finance, and autonomous vehicles. In an enterprise, a minor error/deviation at each step in a multi-step agentic workflow can lead to a huge drift from the expected final outcome. We are an early-stage AI startup assembling a world-class team to shape the future of robust AI. We are researching, experimenting, and developing practical solutions to make AI applications robust. Currently, we are a small team of experienced engineers and researchers passionate about making AI usable in mission critical applications. If the problem resonates with you, and you want to be part of the team, check our careers page: greensand.ai/careers

Headquartered in San Francisco, Deffai is an AI-native VC-backed seed-stage startup building an AI platform for simulating FDA regulatory intelligence, built together with former FDA reviewers. We help therapeutics companies and their investors anticipate regulatory outcomes. We are ambitious builders with diverse technical backgrounds building vertical AI solutions in a deeply regulated space. Work closely with former FDA decision-makers to redefine the future of biotech approvals. Backed by top-tier tech investors in the SF Bay Area, with advisors from GitHub, OpenAI, and Mercor. Are you an ambitious builder who wants to do more and push the boundary of what's possible? Join our team! Size of the opportunity: FDA accounts for 20% of the U.S. economy alone. Food, drug, and cosmetics. Beyond the U.S., other countries and regions including Canada, Europe, and Japan all have their own FDA with similar frameworks.

Zipchat is an AI agent for e-commerce brands. It turns store visitors into customers and takes support work off the team, across the channels shoppers already use. What it does: AI chat that answers product questions and guides shoppers to checkout AI search bar that understands what shoppers mean, not just what they type AI-generated questions on product pages to remove purchase doubts WhatsApp automation for conversations and follow-ups Social Media Manager that replies to comments, hides unwanted ones and answers DMs Why it matters: shoppers expect instant, accurate answers at any hour, and most stores cannot staff that. Zipchat gives them an agent that is always on. Where we are: we passed $2M ARR and we are growing fast, very fast, working with + 2500 e-commerce brands across Europe and beyond such as Lancel, Piquadro, Tropicfeel, Shelly, Jackery etc... Fully remote, built to win. We are going after the e-commerce AI market, and this is just the beginning.

Every enterprise wants to become AI-native, but very few know how to turn rapidly evolving AI capabilities into production systems that create measurable business value. That's where Tribe AI comes in. We are an AI-native services company that helps Fortune 500 companies and ambitious startups design, build, and deploy production-grade AI systems. Our teams work directly with clients to solve high-impact problems using LLMs, agentic workflows, RAG, multimodal AI, evaluations, and modern AI infrastructure not just prototypes or demos. Unlike traditional consulting firms, our engineers, architects, product leaders, and AI specialists embed alongside client teams to understand their business, design practical solutions, and deliver systems that operate reliably in production. We're proud partners of OpenAI and Anthropic, giving us early access to frontier models and close collaboration with the teams building the future of AI. At Tribe, you'll work on challenging AI problems across industries including healthcare, finance, manufacturing, cybersecurity, life sciences, and enterprise software. Every engagement is different, which means continuous learning, meaningful ownership, and the opportunity to shape how the world's largest companies adopt AI. If you're excited about solving difficult technical problems, working directly with customers, and shipping AI systems that matter, you'll fit right in.

We build & manage websites, with hosting, security, 24/7 monitoring, and edits all taken care of. Every report (analytics, search performance, conversions, and custom reports) lives in one dashboard, alongside our suite of tools such as competitor tracking, Google review management, live chat, email campaigns, and more. One bill for everything, starting at $99/mo, with a free migration or new build, a 30-day trial, and no card required to start.