Rather than specific companies that age badly, here are 19 categories where startups are reshaping markets in 2026, with one representative startup for each.
- AI developer tools — e.g. Cursor, Replit
- AI enterprise search — Perplexity, Glean
- Code automation — GitHub Copilot, Codium
- AI agents — Adept, Anthropic
- Healthcare AI — Hippocratic AI, OpenEvidence
- Climate fintech — Watershed, Patch
- Autonomous vehicles (still) — Waymo, Wayve
- Nuclear fusion / SMR energy — Commonwealth Fusion, NuScale
- Defence tech — Anduril, Shield AI
- Biotech / drug discovery — Genesis Therapeutics, Insilico
- Longevity — Altos Labs, Retro Biosciences
- Humanoid robotics — Figure, 1X
- Crypto infrastructure (still) — Privy, Monad
- Creator economy — Substack, Beehiiv
- SMB vertical SaaS — Toast, Housecall Pro
- Legal AI — Harvey, Spellbook
- Edtech (re-emerging) — Khanmigo, CourseMantra
- Space (commercial) — SpaceX, Stoke Space
- Decentralised physical infra (DePIN) — Helium, Hivemapper
19 categories; the specific companies will churn. The pattern to watch: where AI is reducing the cost of a previously-expensive task 10×, a startup is usually winning. That's the meta-insight of 2026.
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