Rank the top 10 startup ecosystems in the United States outside of Silicon Valley.

ChatGPT

Using the latest available 2026 ecosystem data, I’d rank U.S. startup ecosystems outside Silicon Valley roughly as follows. I’m weighting venture funding, startup/scaleup density, exits, technical talent, universities/research, investor depth, and sector-specific advantages rather than simply ranking cities by VC dollars.

Rank Ecosystem Particularly strong in Assessment

1 New York City Fintech, AI, enterprise SaaS, consumer, healthtech The clear #2 U.S. ecosystem after Silicon Valley

2 Boston/Cambridge Biotech, healthtech, robotics, AI, deep tech Exceptional university/research + VC flywheel

3 Los Angeles Consumer, aerospace/defense, media, gaming, hardware Huge, diverse ecosystem with serious capital depth

4 Seattle AI, cloud, enterprise software, developer tools Elite technical talent; rapidly strengthening AI ecosystem

5 Austin SaaS, AI, hardware, semiconductors, consumer Fast-growing founder/investor base and major tech presence

6 Chicago Fintech, B2B SaaS, logistics, food/agtech Large, mature and diversified startup economy

7 Washington, D.C./Northern Virginia Defense tech, cybersecurity, govtech, AI Government/customer proximity creates a unique moat

8 San Diego Biotech, life sciences, wireless, defense One of America's strongest science-driven ecosystems

9 Miami/South Florida Fintech, crypto, proptech, commerce Strong capital and founder migration; ecosystem still maturing

10 Denver/Boulder SaaS, climate tech, aerospace, consumer Excellent founder culture and…

Trimmed here; the full answer is in the viewer.

Named: New York City, Boston, Los Angeles, Seattle, Austin, Chicago, Washington, D.C., San Diego, Miami, Denver, Atlanta, Dallas, San Francisco Bay Area, Salt Lake City, Philadelphia, Raleigh-Durham

Sources cited: carta.com, startupgenome.com, startupblink.com, nvca.org

Claude

Now I have the full ranking. Excluding Silicon Valley/San Francisco Bay (and non-US cities like Toronto), here's the top 10 U.S. startup ecosystems, based on StartupBlink's 2026 Global Startup Ecosystem Index:

New York — the clear #2 nationally; deep fintech, media, and enterprise software scene, with strong 2026 growth.

Los Angeles — a broad mix of media-tech, aerospace, consumer, and an expanding VC base.

Boston — biotech, life sciences, and deep-tech powerhouse anchored by MIT/Harvard, though growth was flat this year.

Austin — the fastest-growing of the "big five," fueled by corporate relocations and a strong AI/hardware scene; jumped into the national top 5 for the first time.

Seattle — cloud/enterprise tech legacy (Amazon, Microsoft) though growth has slowed sharply.

Chicago — renewed momentum in 2026 with double-digit growth, strong in fintech and industrial tech.

Washington, DC — govtech, cybersecurity, and defense-adjacent startups, growing steadily.

Miami — the standout riser, with the fastest growth of any top-10 U.S. city two years running, driven by fintech and an influx of relocating investors.

San Diego — biotech and life sciences cluster, plus growing defense-tech presence.

Dallas-Fort Worth — broad corporate base fueling a fast-growing, diversified startup scene.

Just outside the top 10: Atlanta, Denver, and Salt Lake City are close behind and grew faster than several cities above them, so the order could shift in coming years.

Named: New York City, Los Angeles, Boston, Austin, Seattle, Chicago, Washington, D.C., Miami, San Diego, Dallas, San Francisco Bay Area, Atlanta, Denver, Salt Lake City

Sources cited: none, answered from memory

Gemini

Excluding the San Francisco Bay Area, the top U.S. startup ecosystems are ranked below based on global index evaluations from the Startup Genome GSER Report and the StartupBlink Global Ecosystem Index.

StartupBlink

Rank Ecosystem Dominant Tech Sectors Primary Ecosystem Drivers

1 New York City, NY FinTech, AI, Enterprise SaaS, Media Ranked #2 globally in the Startup Genome GSER Report; unmatched venture capital density and Fortune 500 headquarters.

2 Los Angeles, CA Consumer Tech, Gaming, Aerospace, AI Ranked #4 globally in StartupBlink; strong "Silicon Beach" presence combining entertainment media, e-commerce, and hardware.

3 Boston, MA Biotech, Life Sciences, Robotics, AI Ranked #5 globally in Startup Genome; premier life sciences cluster driven by MIT and Harvard research engines.

4 Seattle, WA Cloud Infrastructure, AI, B2B SaaS Ranked #10 globally in Startup Genome; high exit values fueled by deep Amazon and Microsoft engineering talent.

5 Austin, TX Enterprise SaaS, CleanTech, AI, Hardware Surged to #18 globally in Startup Genome; drew $8.1B in VC funding in 2025 according to Site Selection.

6 Chicago, IL B2B SaaS, Logistics, FinTech, Health Ranked #17 globally in StartupBlink; highly capital-efficient hub with deep corporate supply chain integration.

7 Washington, D.C. Metro GovTech, DefenseTech, Cybersecurity Ranked among top global ecosystems in Startup Genome; powered by federal R&D procurement and defense spending.

8 San Diego, CA Life Sciences, Genomics,…

Trimmed here; the full answer is in the viewer.

Named: New York City, Los Angeles, Boston, Seattle, Austin, Chicago, Washington, D.C., San Diego, Miami, Atlanta, San Francisco Bay Area, Georgia Tech

Sources cited: startupgenome.com, startupblink.com, siteselection.com, ascend.vc

Perplexity

Excluding Silicon Valley/the Bay Area, New York is the clear No. 1 U.S. startup ecosystem, followed by Los Angeles and Boston. The ranking below uses StartupBlink’s 2026 North American ecosystem ordering as the core, supplemented by its 2025 U.S. context for the remainder; it reflects broad ecosystem strength rather than a single metric such as VC dollars alone.

startupblink

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Top 10 ecosystems

Rank Startup ecosystem Why it ranks highly

1 New York City The deepest non-Bay-Area ecosystem, with exceptional strength in fintech, enterprise software, AI, media, commerce, healthtech, and access to customers and capital. It is ranked No. 2 globally and is reported to have nearly 12,000 startups.

startupblink

2 Los Angeles A large, broad-based ecosystem spanning entertainment and creator technology, aerospace/space, consumer apps, e-commerce, gaming, health, and climate. It ranks No. 4 globally in StartupBlink’s 2026 city ranking.

startupblink

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3 Boston–Cambridge The U.S.’s premier non-Bay-Area life-sciences cluster, with world-class university and hospital networks supporting biotech, healthtech, robotics, AI, and deep tech. Boston ranked No. 6 globally in the 2025 index.

startupblink

4 Seattle A major cloud, enterprise software, AI, logistics, and climate-tech base, supported by a deep technical talent pool and large technology-company presence. It is fifth in StartupBlink’s 2026 North American city ordering.

startupblink

5 Austin–Round Rock A fast-growing hub for SaaS,…

Trimmed here; the full answer is in the viewer.

Named: New York City, Los Angeles, Boston, Seattle, Austin, Chicago, San Diego, Denver, Washington, D.C., Miami, San Francisco Bay Area, Raleigh-Durham, Houston, Salt Lake City, Atlanta, Philadelphia

Sources cited: startupblink.com, linkedin.com, startupgenome.com