Explore 1,502 pre-seed startups based in San Francisco, United States. Access verified founder contact information and fundraising data.
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PLAN0 AI provides an AI-powered preconstruction cost intelligence platform for real estate and construction stakeholders.
PerfectBit provides verifier grounded multimodal training data for advanced AI models and research systems.
Clara is an AI-first primary care and longevity practice, it pairs continuous health monitoring via AI with real, licensed clinicians.
Soopra.AI develops an AI-powered personality engine for authentic digital reflections.
Surtr Defense Systems is a developer of AI-powered software layer that combine different drone technologies into one command system.
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Saile is an AI-enabled healthcare staffing marketplace connecting doctors and advanced practice providers with clinical &non-clinical gigs.
Rapid semiconductor manufacturing
Personalized electric heating systems for restaurants and outdoor spaces—reducing costs and improving guest comfort.
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automation of sales admin work - from updating SFDC fields to follow up emails, creation of pitch-decks and account plans, using LLMs
Klarify is a developer of AI practice management platform automating therapists’ administrative workflows.
Cross-border payments infrastructure for the next century of commerce
Belay is a fintech company that provides income volatility protection for gig workers.
Plan, produce, review, and publish streaming and on-demand video content.
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SimpleHash is an NFT data platform that specializes in infrastructure for multi-chain NFT indexing and querying.
OpenSight provides AI-powered customer support automation services.
Narrative is an AI-powered invoice audit, analytics, and payment tool for logistics.
Upfront helps merchants that sell clean energy products by turning billions of dollars of rebates into lower prices.
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Struct is a software development company that provides a platform for realtime AI voice agents.
Diffuse Bio develops an automated AI software platform for drug design, leveraging advances in generative AI.
TorMagnus Pharmaceuticals is a drug discovery firm dedicated to discovering treatments for Peroxisomal disorders.
Amealio - a mobilization platform for Social Dine-Out Experiences. Makes Going out and Socializing a happy & enjoyable experience.
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