YC Summer 2026 companies worth a look
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YC S26 · frontier.site
Frontier Computing — Grows biological brains as a substrate for ML training
Frontier grows scalable biological brains as an ML training substrate
Artificial intelligenceHard techHardwareYCIndustrials · +2
YC S26 · ethos-space.com
Ethos Space Resources — Makes solar-grade silicon from lunar regolith
Ethos Space Resources makes solar-grade silicon on the Moon. Demand for AI compute is compounding toward a terawatt a year of new capacity, and once data centres head to orbit it is rocket capacity, not the grid, that caps the buildout — so terawatt-scale AI in space has to be built from mass already outside Earth's gravity well. Ethos melts, electrolyses and purifies lunar regolith in hard vacuum, a single process that yields construction materials, rocket propellant and solar-grade silicon, tested in the company's own lunar environment chamber. The work starts with mining and construction for the first heavy landings: landing pads, propellant for the trip home, and silicon that turns sunlight into more capacity. Founded in 2022 by Ross Centers (Planetary Sunshade Institute) and Brogan BamBrogan (former principal propulsion engineer at SpaceX, co-founder of Hyperloop One), Ethos is based in Los Angeles and is part of Y Combinator's Summer 2026 batch.
Hard techExascale computing3d-printingYCEnergyAerospace · +1 · +4
YC S26 · spectreintelligence.ai
Spectre Intelligence — Trading firm that trains AI traders instead of hiring humans
Spectre Intelligence is a multi-strategy trading firm that trains AI traders instead of hiring human ones. An independent research and trading company built around reasoning under uncertainty, it currently trades in the semiconductor and biotechnology sectors. Founded by Michelle Li (CEO) and Joshua Zyzak, the firm is based in San Francisco and is part of Y Combinator's Summer 2026 batch.
BiotechnologyInvestingTradingYCSemiconductorsFintech · +3
YC S26
Studio launches at YC (Summer 2026)
Engineer the future
Artificial intelligenceB2BAnalyticsYC · +1
YC S26 · hilstart.io
Hilstart — Autonomous hardware testing
Autonomous Hardware Testing
Developer toolsHardwareIndustrialsYC · +1
YC S26 · callbook.ai
Callbook AI — AI collections agency for late-stage portfolios
AI collections agency for late stage portfolios
Artificial intelligenceB2BYC
YC Summer 2026 companies worth a look, by email.
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YC S26 · standardmedical.com
Standard Medical — Primary care clinic where AI earns clinical autonomy
A primary care clinic where AI earns clinical autonomy
HealthcareTelehealthDigital healthYCPrimary care · +2
YC S26
Kandor launches at YC (Summer 2026)
Making health insurance invisible
Artificial intelligenceFintechHealthcareYC · +1
YC S26 · massmagnetics.com
Mass Magnetics — Magnetics for aerospace, robotics and defense
USA-made magnetics for aerospace, robotics and defense.
Hard techDronesManufacturingYCIndustrials · +2
YC S26
Akon Labs launches at YC (Summer 2026)
Nervous System for AI Agents
Deep learningGenerative AISaaSYCB2B · +2
YC S26 · pingdream.com
Dream — Pocket-sized AI cameras that catch asset damage
Pocket-sized AI cameras that catch asset damage.
Artificial intelligenceHardwareMachine learningYCComputer visionB2B · +3
YC S26 · bernardhq.com
Bernard — AI employees that run home appliance repair companies
AI employees that run home appliance repair companies
Home servicesArtificial intelligenceB2BYC · +1
YC S26 · magmahq.ai
Magma — Lets you monetize your AI agent's traces
Monetize your agent's traces.
Reinforcement learningData engineeringArtificial intelligenceYCB2B · +2
YC S26 · getpennant.ai
Pennant — Corporate governance software for public companies
The Corporate Governance OS for Public Markets
FintechInvestingInvestmentsYCArtificial intelligence · +2
YC S26 · meteoric.earth
Meteoric — Drones that clear clouds over solar farms
Drones that clear clouds over solar farms
Hard techRenewable energyClimatetechYCIndustrials · +2
YC S26 · toven.ai
TovenAI — AI agents for compliance at institutional trading firms
AI agents for compliance at institutional trading firms
FintechRegtechArtificial intelligenceYC · +1
YC S26 · edotenv.com
EdotEnv — Quant trading lab building toward self-improving AI
A Quant Neolab building toward RSI via quant trading
Reinforcement learningTime seriesB2BYC · +1
YC S26 · deepreach.ai
DeepReach Inc. — Real-world data network for robots and world models
Real-world data network for robots & world models
Artificial intelligenceHardwareMachine learningYCRoboticsComputer vision · +1 · +4
YC S26 · dipolelabs.com
Dipole Labs — AI-controlled optical switching for AI clusters
AI-controlled optical switching for AI clusters
Hard techSemiconductorsArtificial intelligenceYCIndustrials · +2
YC S26 · trynearby.com
TryNearby — Connects local businesses with local creators
Local creators for local businesses
Restaurant techMarketingCreator economyYCSmbB2B · +3
YC S26 · movingatoms.ai
Moving Atoms — World models that act as virtual reality for robots
Virtual Reality for Robots (World Models)
Artificial intelligenceRoboticsVirtual realityYCIndustrials · +2
YC S26 · heytenor.com
Tenor — Lets every employee manage AI workers
Turn every employee into a manager of AI workers
Artificial intelligenceB2BAutomationYC · +1
YC S26 · financialdatasets.ai
Financial Datasets — Connects AI agents to the stock market
Connect your agent to the stock market
Artificial intelligenceFintechStocksYCB2B · +2
YC S26 · gopacific.ai
Pacific — Micro data centers for harsh places on Earth and in space
Micro data centers for the harshest places on Earth and in space.
FintechRoboticsSpace technologyYCManufacturingArtificial intelligence · +1 · +4
