Top Artificial Intelligence Startups in California, US

TELUS International AI Data Solutions Creating and enhancing the world's data to enable better AI via human intelligence We help companies test and improve machine learning models via our global AI Community of 1 million+ annotators and linguists. Our proprietary Ground Truth AI training platform handles all data types across 500+ languages and dialects. Our AI Data Solutions vastly enhance AI systems across a range of applications from advanced smart products, to better search results, to expanded speech recognition, to more human-like bot interactions and so much more. TELUS International values people diversity and grants equal opportunity regardless of age, civil status, disability, gender, nationality, race, religion and political beliefs, sex or sexual orientation.

At Toi Labs, we’re pioneering the next frontier of personal health monitoring—starting in the most unexpected place: the bathroom. By transforming the toilet into a passive health companion, we deliver real-time, actionable insights into gut health and more—without requiring users to change their behavior. Our platform enables early detection and preventive care right from the home. Recognized by TIME as a Best Invention of the Year and backed by TOTO, Sloan and the NIH, we’re combining elegant design, embedded technology, and data science to redefine how—and where—healthcare happens.

Afresh is on a mission to reduce food waste and increase access to nutritious food globally by transforming the fresh food supply chain. Our AI-powered solutions optimize the multi-trillion-dollar grocery industry's food ordering, production, and merchandising processes. We built the first platform capable of handling all of Fresh food’s complexities. We are relentlessly focused on helping grocers reduce waste, increase profitability, and bring better, fresher food to their communities. Afresh is currently deployed in hundreds of grocery stores across the United States and is on track to reduce 30 million pounds of food waste per year with our existing customers alone. By 2021, we're aiming to reduce food waste by a quarter billion pounds per year. We are a passionate team united by our mission to make an impact. As an Afresh employee, you’ll own meaningful work that will challenge you and change the future of how fresh, nutritious food makes its way through the supply chain. We hope you’ll join us!

TrueFoundry is an Enterprise Platform as a service that enables companies to build, ship and govern Agentic AI applications securely, at scale and with reliability through its AI Gateway and Agentic Deployment platform. Its AI Gateway encompasses a combination of - LLM Gateway, MCP Gateway and Agent Gateway - enabling enterprises to manage, observe, and govern access to all components of a Gen AI Application from a single control plane while ensuring proper FinOps controls. Its Agentic Deployment platform enables organizations to deploy models on GPUs using best practices, run and scale AI agents, and host MCP servers - all within the same Kubernetes-native platform. It supports on-premise, multi-cloud or Hybrid installation for both the AI Gateway and deployment environments, offers data residency and ensures enterprise-grade compliance with SOC 2, HIPAA, EU AI Act and ITAR standards. Leading Fortune 1000 companies like Resmed, Siemens Healthineers, Automation Anywhere, Zscaler, Nvidia and others trust TrueFoundry to accelerate innovation and deliver AI at scale, with 10Bn + requests per month processed via its AI Gateway and more than 1000+ clusters managed by its Agentic deployment platform. TrueFoundry’s vision is to become the Central control plane for running Agentic AI at scale within enterprises and empowering it with intelligence so that the multi-agent systems become a self-sustaining ecosystem driving unparalleled speed and innovation for businesses. To learn more about TrueFoundry, visit truefoundry.com.

Kritik is an early-stage but fast growing ed-tech startup working passionately to upgrade college classroom experience with our fun and automated peer-to-peer learning technology. We launched our product into +200 universities and are ready to scale in the upcoming year. We are serial entrepreneurs, backed by some of the top players in the Canadian startup ecosystem including ApplyBoard and GarageCapital. We are looking for smart and motivated people to join the startup and be part of the fast movement in changing the way students are tasked and assessed. Recently, we launched VisibleAI (a completely new product), for which we have developed Artificial Intelligence (AI) for educators and institutions and a platform for academic integrity to equip educators with practical, ready-to-use strategies and prompts while maintaining academic integrity and fostering learning. The goal is to ensure educators are well-equipped to leverage AI, the effectiveness of PBL, and related concepts. The product offers transparency by detecting and reporting AI-generated content, helping educators maintain rigorous academic standards while embracing AI's educational potential.

nOps is an automated cloud optimization platform that makes it easy to allocate and manage cloud usage, commitments, and spend. Managing $4B+ in annual cloud spend, nOps helps companies of every size, from fast-growing startups to global enterprises, reclaim millions in wasted cloud costs. Cloud waste is one of the fastest growing challenges in tech. nOps tackles it by leveraging proprietary ML modeling and AI-powered automation to guide organizations toward the right commitment strategy. The platform eliminates manual provisioning entirely, delivering maximum cost savings without sacrificing reliability, so teams can focus on building and innovating. Trusted by innovative brands around the world, nOps has been recognized as a G2 Top 50 Security Product and G2 Leader for Winter 2025, is an AWS Advanced Technology Partner, and a proud FinOps Foundation Member with our CEO serving on the FinOps Foundation Governing Board.

We are building a world where no patient has to die of cancer. Our FDA-cleared flagship product, Unfold AI, reveals the invisible cancer that doctors miss, enabling oncologists and surgeons to achieve better treatment outcomes while preserving patients’ quality of life. Unfold AI is a multi-modal AI platform that combines a patient’s diagnostic data together (from EHR, PACS, and other healthcare systems) to create an interactive 3D map of the patient’s cancer, enabling more precise and personalized treatment. Unfold AI improves the ability of expert oncologists and surgeons in finding and eliminating cancer, demonstrated in multiple clinical trials.

Our mission is to automate how humans acquire and master skills. The first step in our journey is to build the "AI stack for education" to transform the credentialing and publishing industries with the best tools to build curricula, assessments, and apps at scale. After winning #1 (of 1,500) in the Vercel AI Accelerator we bootstrapped to millions in revenue and profitability while delivering over 200MM assessments via our AI platform. We also just closed our first strategic investment to scale faster and deploy our solution to millions of additional learners. We're a lean, talented team that rewards agency, curiosity, and shipping real products that directly impact the lives of millions. "Memorang has literally the best gen AI results I've seen applied to a real world problem." - Director of Trust and Safety, Google Deepmind

Hospitable, an Inc. 5000 company, gifts short-term rental hosts their valuable time back. Founded in 2016, Hospitable’s tools allow hosts to automate the most time-consuming elements of hosting. Hosts use Hospitable to answer 90% of guest messages with AI-powered automated messaging, to automate their team notifications so they never miss a clean, and to avoid double bookings with a synchronized calendar across booking channels. Hospitable allows hosts to build their own direct booking website with guest vetting, $5M damage protection, and payment processing built-in. Hospitable also connects with popular 3rd party online travel agencies such as Airbnb, Vrbo, and [Booking.com](booking.com).

Mosaic is the AI-Powered Workforce Management software that's radically changing how companies are managed. We helps companies manage the skills of their workforce and uses AI to prevent burnout, empowering teams to do their best work while still having a life. Mosaic provides the tools needed to connect and manage a modern distributed workforce.