Venture Capital

Kleiner Perkins

Kleiner Perkins is one of Silicon Valley's oldest and most storied venture capital firms, founded in 1972 by Eugene Kleiner and Tom Perkins and headquartered on Sand Hill Road in Menlo Park, California, with additional offices in San Francisco and Shanghai. Across more than five decades and 21 venture funds plus 6 growth funds, the firm has invested over $10 billion and backed more than 900 ventures, including foundational companies such as Amazon, Google, Genentech, Electronic Arts, Juniper Networks, Intuit, Spotify, Figma, Robinhood, DoorDash, Duolingo and Databricks. Kleiner Perkins partners with founders from inception through IPO and beyond across early and growth stages, with seed rounds averaging roughly $4-5M and Series A rounds around $17-18M. In 2026 the firm announced its twenty-second venture fund, KP22, a $1B early-stage fund, alongside $2.5B in new growth funds. Current investment focus centers on artificial intelligence and AI safety, enterprise software, developer tools and infrastructure, healthcare and biotech, fintech, hardtech and autonomous systems, and cybersecurity, with a thesis that the right idea, team and partners can create an entirely new industry.

230 portfolio companies 230 publish APIs here 12 properties
Venture CapitalEarly StageGrowth EquityArtificial IntelligenceDeveloper ToolsInfrastructureEnterprise SoftwareFintechHealthcareSilicon Valley
The Kleiner Perkins API Portfolio cover
API Evangelist Portfolio Report
The Kleiner Perkins API Portfolio

A small book with the densest top end measured in this series, where every exemplar is a frontier AI or design-infra bet and the mature franchises ship breadth but no agent surface.

Read the report $750.00 · every API-bearing company in the book, scored on the Kin Score
Portfolio Strength across 230 profiled portfolio companies on the network
17 top-rated API companies 6 exemplar · 11 strong
39 agent-ready companies 5 agent-native · 34 agent-ready
Average quality of the book:
Composite emerging 22.8
Agent-Readiness human-only 13.4

Firms are ranked by cumulative portfolio strength — how many highly-rated API companies they've backed, weighted by tier across composite quality and agent-readiness. The averages below are a secondary read on the typical company in the book.

Kleiner Perkins has 230 portfolio companies tracked on the APIs.io network, of which 230 (100%) publish APIs indexed here.

Its highest-rated API providers on the network are Figma, Fal, Anthropic, Databricks, Parallel.

Portfolio on the Network

Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.

Exemplar 6 Complete, well-documented, and agent-ready
Strong 11 Solid coverage with minor gaps
Developing 37 Usable, with meaningful gaps to close
Thin 26 Limited public surface area
Emerging 41 Early or largely undocumented
Minimal 109 Almost no public developer surface
Foundation Medicine 12.9 Future 12.5 Choose Energy 12.4 Chegg 11.9 American Superconductor Corporation 11.8 Bloom Energy 11.8 Beam Dental 11.7 Crystal Dynamics 11.6 Lotus Health AI 11.6 Armadin 11.5 CesiumAstro 11.2 MedArrive 10.8 Audible 10.5 FabFitFun 10.5 Karma Science 10.5 Lumeris 10.5 Jive 10.3 Collabra 10.1 TerraFirma 10.1 Balerion 10.0 Beyond Meat 9.7 Gambit 9.7 Poetic 9.2 Juna.ai 9.1 Convoke 8.3 Ionic Security 8.3 Ambience 8.0 Amyris 8.0 ArcSight 7.6 Macromedia 7.5 Chef Robotics 7.0 Endgame 6.9 Breathe Technologies 6.8 Area 1 Security 6.7 Bedrock Systems 6.4 LuxCreo 6.1 Boston Scientific 5.7 CoreOS 5.7 Engine ML 5.7 Inkitt 5.7 Klout 5.7 Amprius 5.4 ArsenalBio 5.4 Atara Bio 5.4 Epizyme 5.4 Livongo 5.4 NewLimit 5.2 3VR 5.0 41st Parameter 5.0 @Home Network 5.0 AdKnowledge 5.0 AutoTrader.com 5.0 Azarus 5.0 Bison Trails 5.0 BuddyBuild 5.0 CloudPhysics 5.0 Compaq Computer Corporation 5.0 Corio 5.0 Crossbar 5.0 Crystal 5.0 Drawbridge 5.0 Dropcam 5.0 EdgeSpring 5.0 Engram 5.0 Eo Computer 5.0 Excite@Home 5.0 Flipagram 5.0 General Radar 5.0 Good Technology 5.0 HYLA 5.0 IControl Networks 5.0 Internet Security Systems 5.0 Kalpana 5.0 Katango 5.0 Linear Technology 5.0 LSI 5.0 Luvocracy 5.0 Manifest OS 5.0 Mind Robotics 5.0 Mirendil 5.0 Roadrunner 5.0 Arresto Biosciences 4.9 ARMO BioSciences 4.3 Ascend Communications 4.3 Cardiovascular Devices 4.3 Cell Design Labs 4.3 Cerent 4.3 Corventis 4.3 Crescendo Bioscience 4.3 Destineer 4.3 Diamond Lane 4.3 Evalve 4.3 Flexus Biosciences 4.3 Genomic Health 4.3 IDEC Pharmaceuticals 4.3 Intersect ENT 4.3 Lightera 4.3 Millennium Pharmaceuticals 4.3 Handspring 4.1 Indigo 4.1 Jask 4.1 Ketera 4.1 Lotus Development 4.1 LuxVue Technology 4.1 Marimba 4.1 GenPharm 3.5 Heartport 3.5 iPierian 3.5 Align Technology 3.3

Properties

Portfolio

Where the firm publishes its investments

Team

Partners and investing staff

Content

Blog, podcast, newsletter, and research

Firm

The firm itself

Other

Everything else declared in apis.yml

Source (apis.yml)

apis.yml Raw ↑
aid: kleiner-perkins
name: Kleiner Perkins
description: >-
  Kleiner Perkins is one of Silicon Valley's oldest and most storied venture
  capital firms, founded in 1972 by Eugene Kleiner and Tom Perkins and
  headquartered on Sand Hill Road in Menlo Park, California, with additional
  offices in San Francisco and Shanghai. Across more than five decades and 21
  venture funds plus 6 growth funds, the firm has invested over $10 billion and
  backed more than 900 ventures, including foundational companies such as Amazon,
  Google, Genentech, Electronic Arts, Juniper Networks, Intuit, Spotify, Figma,
  Robinhood, DoorDash, Duolingo and Databricks. Kleiner Perkins partners with
  founders from inception through IPO and beyond across early and growth stages,
  with seed rounds averaging roughly $4-5M and Series A rounds around $17-18M. In
  2026 the firm announced its twenty-second venture fund, KP22, a $1B early-stage
  fund, alongside $2.5B in new growth funds. Current investment focus centers on
  artificial intelligence and AI safety, enterprise software, developer tools and
  infrastructure, healthcare and biotech, fintech, hardtech and autonomous
  systems, and cybersecurity, with a thesis that the right idea, team and partners
  can create an entirely new industry.
x-type: venture-capital
x-category: Venture Capital
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.kleinerperkins.com/brand-assets/
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.20'
tags:
  - Venture Capital
  - Early Stage
  - Growth Equity
  - Artificial Intelligence
  - Developer Tools
  - Infrastructure
  - Enterprise Software
  - Fintech
  - Healthcare
  - Silicon Valley
apis: []
common:
  - type: Website
    url: https://www.kleinerperkins.com
  - type: Portfolio
    url: https://www.kleinerperkins.com/partnerships/
  - type: Portfolio
    url: portfolio/kleiner-perkins-portfolio.yml
  - type: Team
    url: https://www.kleinerperkins.com/people/
  - type: Team
    url: team/kleiner-perkins-team.yml
  - type: InvestmentThesis
    url: https://www.kleinerperkins.com/perspectives/
  - type: Blog
    url: https://www.kleinerperkins.com/perspectives/
  - type: About
    url: https://www.kleinerperkins.com/about/
  - type: LinkedIn
    url: https://www.linkedin.com/company/kleinerperkins/
  - type: Twitter
    url: https://x.com/kleinerperkins
  - type: YouTube
    url: https://www.youtube.com/@KleinerPerkinsVideos
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/kleiner-perkins-caufield-byers
  - type: Features
    data:
      - 'Stage: Early stage (seed, Series A) through growth'
      - 'Typical check: seed rounds avg ~$4-5M; Series A rounds avg ~$17-18M'
      - 'Sectors: AI & AI safety, enterprise software, developer tools & infrastructure, healthcare & biotech, fintech, hardtech, cybersecurity'
      - 'Geography: United States (Silicon Valley) with global reach; offices in Menlo Park, San Francisco, Shanghai'
      - 'AUM: over $10B invested across 21 venture + 6 growth funds; KP22 = $1B (2026) + $2.5B growth funds (2026)'
      - 'Founded: 1972'
      - 'HQ: Menlo Park, California (Sand Hill Road)'
      - 'Ventures backed: 900+'
    sources:
      - https://www.kleinerperkins.com/about/
      - https://en.wikipedia.org/wiki/Kleiner_Perkins
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com
    url: https://apievangelist.com
  - FN: APIs.json
    url: http://apisjson.org
  - FN: Kleiner Perkins
    url: https://www.kleinerperkins.com