Top California Big Data Startups (291)

As businesses increasingly rely on data and AI to power digital products and drive better decision-making, it's mission-critical that this data is accurate and reliable. Monte Carlo, the data + AI observability leader, is the creator of the industry's first end-to-end Data & AI Observability platform. Our mission is to enable the world's enterprises to adopt trusted AI. In 2025, Monte...

Hex is changing the way people work with data. Our platform makes analytics workflows more powerful, collaborative, and shareable. Hex solves key pain points with today's data and analytics tooling, and is loved by thousands of users all over the world for the beautiful UI, new superpowers, and boundless flexibility. We are a tight-knit crew of engineers, designers, and data aficionados....

Our mission is to remove inefficiency from the foundation of AI. By combining new research in information theory, probabilistic modeling, and distributed systems, we’re creating self-optimizing data infrastructure that continuously improves how information is represented and used by intelligent systems.

Product.ai (formerly Demand.io) is the truth layer for commerce. Built on Axiomatic Intelligence — a proprietary adversarial reasoning methodology that stress-tests product claims against physics, economics, and engineering constraints — Product.ai delivers verified purchase verdicts, not summaries. Product.ai tells consumers when NOT to buy. Product.ai emerges from Demand.io, a profitable, bootstrapped AI commerce company whose SimplyCodes platform processes over $1B...

InfluxData is the creator of InfluxDB, the leading time series database used by millions of developers building real-time systems. InfluxDB captures and analyzes massive streams of high-resolution data, giving AI models the context for predictive maintenance and anomaly detection so systems can detect, alert, and adapt as conditions change. Built for high performance at any scale and in any environment,...

Citrine Informatics is the award-winning materials informatics platform for data-driven materials and chemicals development. It won the 2017 World Materials Forum Start-up Challenge, the 2018 AI Breakthrough award as the "Best AI-based Solution for Manufacturing," and 2020-2021 Cleantech 100 honors. The Citrine Platform combines smart materials data infrastructure and AI, which accelerates development of cutting-edge materials, facilitates product portfolio optimization,...

We believe in the wisdom of the crowd, where the opinion of millions is more relevant (and far more predictive) than the opinion of one writer or critic. Visitors to Ranker have now cast over one billion votes shaping our pop culture rankings. This voting data powers a predictive insights platform with multiple applications for brands and studios.

Exxact Corporation is a global, value-added supplier of computing products and solutions. We distribute system components, peripherals, networking equipment, software, and IT systems, enabling us to offer comprehensive solutions to our customers worldwide. In addition, Exxact develops and manufactures innovative computing platforms and solutions that include workstation, server, cluster, and storage products developed for HPC, Big Data, Cloud, Visualization, Video...

Comprised of a growing statewide and soon to be national multi-specialty physician group, multiple clinically integrated networks, and our population health service organization, Altais delivers value-based care through partnership, quality and innovation. Led by physicians and industry experts, Altais delivers exceptional care through its clinics and networks, as well as co-creates unique and effective solutions to optimize operations, workflows and...

Nextdata OS turns legacy data pipelines and scattered tools into a unified layer of autonomous data products—AI-ready by design. By making data self-describing, self-governing, and instantly usable by agents and applications, Nextdata OS helps teams move faster, reduce risk, and deliver trusted data for AI, analytics, and innovation.

The Aerospike Real-time Data Platform enables organizations to act instantly across billions of transactions while reducing server footprint up to 80%. The Aerospike multi-cloud platform powers real-time applications with predictable sub-millisecond performance up to petabyte scale with five-nines uptime with globally distributed, strongly consistent data. Applications built on the Aerospike Real-time Data Platform fight fraud, provide recommendations that dramatically increase...

Quantifind helps some of the world’s biggest banks catch money laundering and fraud. Quantifind also works with government agencies to use the same platform to uncover criminal networks and combat election tampering. Unlike other players in this space, Quantifind delivers results as software-as-a-service (SaaS) with consumer-grade user experiences. Quantifind is a data science technology company whose AI platform uncovers signals...

Rollstack automates slide decks and document reporting using AI and data integrations. Leading organizations like SoFi and Whirlpool use Rollstack to automate leadership reporting, client presentations, financial reporting, and all types of data-driven PowerPoints, documents, and newsletters. Stop manually building critical business and client reports. Rollstack integrates with leading business intelligence tools like Tableau and PowerBI, mapping them to PowerPoint, Word,...

Datawizz is revolutionizing data management with advanced synthetic data solutions. We help businesses unlock the power of their data while ensuring privacy and compliance. Our technology generates realistic synthetic data for machine learning, software testing, data enrichment, and augmentation—all within a click of a button. Enhance your data strategies with Datawizz and drive innovation securely and efficiently.

Nimble enables your AI agents and teams to stream the precise intelligence they need from the live web, powered by infrastructure built to reliably access even the most complex, difficult-to-reach data.

SHEIN Technology is a U.S. technology company. Founded in 2012, SHEIN is a leading global online retailer with operations in Guangzhou, Los Angeles and Singapore, along with other key markets. SHEIN reaches consumers across more than 150 countries and regions around the world. We place a premium on choice, delivering more than 6,000 new fashion, beauty and lifestyle products daily...

Data Theorem prevents AppSec data breaches. We provide SAST, DAST, & RASP for API Security, Web Security, Mobile Security, and Cloud Security. Our products provide Inventory (Discovery), Security Testing (SAST/DAST), and Active Protection (RASP) for APIs (RESTful, GraphQL, gRPC, and SOAP), mobile apps (iOS, Android, React Native, Flutter), Web Apps (Web 2.0 & Single Page Apps), & Cloud Apps +...

Windfall is a people intelligence and AI company that gives go-to-market teams actionable insights. By democratizing access to people data, organizations can intelligently prioritize go-to-market resources to drive greater business outcomes. Powered by best-in-class machine learning and propensity modeling, Windfall activates insights into workflows that engage the right people for each respective organization. More than 800 data-driven organizations use Windfall...

Fuel Cycle unleashes the power of decision intelligence for legendary brands. We achieve this by enabling brands to rapidly capture and act on the mission-critical insights required to launch new products, acquire customers, and gain market share. By leveraging the Research Engine, brands forge connections with their key audiences and harness actionable insights that drive confident business decisions.

Medeloop is an AI-native platform that is creating the future of clinical operations and health research through cutting-edge AI and big data technologies, layered on top of a secure network of >100 million patient records. Medeloop originated from Stanford University and is backed by General Catalyst, Icon Ventures, Inovia Capital, Healthier Capital, and more. Medeloop's team includes leaders in AI, life sciences,...