Top Artificial Intelligence Startups in California, US

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.

At Robylon, we’re redefining how businesses handle customer support with AI-powered automation. Our platform seamlessly integrates across Tickets/Emails, Chats, Social, and Voice, enabling companies to: ✅ Automate over 80% of customer queries ✅ Accelerate resolution times by 90%+ ✅ Cut support costs by 30%+ We believe in outcomes, not just promises—so we only charge per resolved query. ?

Measuring model ability is the most challenging part of creating applications that are capable of automating any given part of the economy. There are no good techniques or benchmarks for evaluating LLM performance on business-relevant tasks, so adoption for enterprise production settings has been limited (see Wittgenstein’s ruler). This problem materializes in each place where LLMs have potential: in understanding whether the AI tool companies are building a product will satisfy a customer demand, determining how feasible models and vendors are for a given enterprise in making purchasing decisions, for researchers who need a north star to which to expand model ability. Today, answering these questions amounts to hiring a human review team to manually evaluate model outputs. This is prohibitively expensive and slow. Vals AI is building the enterprise benchmark of LLM and LLM apps on real-world business tasks. In doing so we are creating the infrastructure + certification to automatically audit LLM applications, verifying they are ready for consumption. We've raised mid-seven figures from some of the top institutional investors and strategic angels in Silicon Valley. See our benchmarks and launch announcement in Bloomberg: bloomberg.com/news/newsletters/2024-04-11/this-startup-is-trying-to-test-how-…

GoodGoblin.ai is the ultimate "Admissions Operating System" designed to democratize elite college guidance. We believe expert mentorship shouldn't be a luxury for the few, so we built a data-driven platform that levels the playing field for every student. Our Four Pillars of Success Our platform guides students through the entire journey—from freshman strategy to senior year submission:   Architect (Grades 9–11): Builds a multi-year roadmap and identifies "profile gaps" early on.   Strategist (Grades 10–12): Uses data to find the perfect mix of "Reach," "Target," and "Safety" schools.   Editor (Grades 11–12): Provides 24/7 AI narrative coaching with instant feedback on clarity, story, and structure.   Analyst (Grade 12): Performs a final holistic audit to calculate real-time acceptance probabilities before you hit submit. Why It Matters Proven Results: Our users see a 31% boost in admission odds, with 97% of students securing a spot at a Top-30 university.   Radical Transparency: We show students exactly why an essay works using the same metrics admissions officers use.   Engineering Precision: We turn "guessing" into "optimizing" by analyzing millions of data points from successful applicants.   Join us in our mission to make the path to a dream university predictable, affordable, and stress-free for over 50,000 students worldwide.

Avoca is defining the AI front office built for the $1T home services industry. We're trusted by 800+ operators across HVAC, plumbing, electrical, roofing, pest control, and more. 100 people and growing. Backed by top investors. We have a high-energy, in-office culture across our NYC headquarters and Santa Barbara office.

Farmhand is a vertical SaaS platform and AI-enabled virtual assistant specially trained to help local farmers market, manage and grow their business. Farmhand combines smart farm management tools with done-for-you marketing, 1:1 business coaching, and hands-on support — so farmers can grow their operation without drowning in admin. See what we're building now at farmhand.partners/updates

FarmGPU is redefining the future of GPU-powered cloud computing by offering cost-effective, scalable, and high-performance GPU resources tailored specifically for AI developers, innovative startups, and enterprises worldwide. Positioned as a pioneer in the emerging "AI Neocloud" market, FarmGPU distinguishes itself from traditional hyperscale cloud providers through its specialized GPU-centric infrastructure and lean operational model. Our infrastructure leverages cutting-edge storage solutions, including the latest PCIe 5.0 NVMe SSDs, DPUs, and high bandwidth network storage. We build our platform using precisely tailored hardware—right-sized CPUs, RAM, and networking—to ensure maximum efficiency and cost savings, eliminating the unnecessary overhead associated with traditional cloud platforms. FarmGPU's commitment to operational excellence includes advanced AI workload orchestration, proactive system monitoring, comprehensive telemetry, and rigorous performance testing, backed by extensive expertise in high-performance GPU technologies. Our robust security framework incorporates AMD Infinity Guard with TSME and SEV for confidential computing, adhering strictly to ISO/IEC 27001 and 27040 standards, ensuring full data encryption in transit and at rest. With instant deployment capabilities, our Docker-based instances spin up in seconds, enabling immediate access to GPU resources without the delays or inflated costs typically encountered with traditional cloud providers. Already trusted by industry leaders, including RunPod, the world’s fastest-growing decentralized GPU cloud platform, prominent blockchain companies, and top-tier SSD vendors, FarmGPU continues to scale and innovate at the forefront of the GPU compute industry. At FarmGPU, our goal is simple yet powerful: to deliver unmatched GPU computing value, empowering our customers to accelerate their AI ambitions efficiently and economically.

Neander is building a multiplayer, agent-native development environment where business and technical teams co-create production software together. Instead of turning ideas into tickets, Neander translates business intent into architectural decisions, orchestrates collaboration across teams, and automates customization directly within the development environment itself. To apply for an early access, add yourself to the waitlist at neander.ai. If you don't see a relevant role but are interested in being part of our mission, write to me at [email protected]