137 YC Infrastructure Startups

137 Y Combinator companies carry the Infrastructure tag in YC's own directory, across every batch since 2005. Each row shows what the company does, its batch, HQ and status, and links to its YC application reconstructed in the real form, so a founder building a Infrastructure startup can read how accepted companies answered the same questions.

Companies
137
Top industries
B2B, Fintech and Industrials
Top locations
San Francisco, New York and Boston
137 reconstructed applications

Read the YC application of all 137 companies

  • Every company's YC application, reconstructed in the real form
  • Filter every batch by industry, country and team size
  • Then find the investors who fund startups like yours

The first 100 companies, top companies first

1
14.ai
14.aiAI engine powering autonomous brands starting with gloglo.com
Winter 2024San Francisco, CAActive
2
Aden
AdenOpen source agent generation framework
Winter 2020San Francisco, CAActive
4
Akkari
AkkariAutonomous Customer Operations
Spring 2026San Francisco, CAActive
5
Alpaca
AlpacaAPI-first stock and crypto brokerage platform
Winter 2019San Mateo, CAActive
6
Amika
AmikaInfra to build your own software factory
Fall 2025New York, NYActive
7
Approxima
ApproximaYour software should build itself.
Winter 2026San Francisco, CAActive
8
Archal
ArchalAPI sandboxes, built for AI agents
Summer 2026San Francisco, CAActive
9
Archil
ArchilThe high-performance file system that connects AI to data
Fall 2024San Francisco, CAActive
10
Arga Labs
Arga LabsReal-world sandboxes to test agents and agent-facing software
Spring 2026San Francisco, CAActive

That is 10 of 137.

Every company below has its YC application reconstructed in YC Insights. Create a free account to read them all.

Read all 137 applications
11
Argo
ArgoA social streaming platform powered by creators and fans
Winter 2022Los Angeles, CAActive
12
Attune
AttuneFaster builds, zero effort.
Spring 2025San Francisco, CAActive
13
Automorphic
AutomorphicInfuse knowledge into language models with just 10 samples
Summer 2023San Francisco, CAActive
14
Avea Robotics
Avea RoboticsTeleoperate your robots from anywhere in the world
Spring 2026San Francisco, CAActive
15
Bidflow
BidflowAI Takeoffs for Electrical
Winter 2026New York, NYActive
16
Blaxel
BlaxelThe perpetual sandbox platform
Spring 2025San Francisco, CAActive
17
Bloom
BloomBrand infrastructure for AI
Spring 2026San Francisco, CAActive
18
Bolna AI
Bolna AIVoice AI to enable India's next billion
Fall 2025Bengaluru, KA, IndiaActive
20
BotCity
BotCityObservability and Governance for AI-Generated Python scripts.
Winter 2022San Francisco, CAActive
21
Brainboard
BrainboardVisually design and manage cloud infrastructures.
Winter 2022New York, NYActive
22
BuildJet
BuildJetHigh-performance computing cloud
Winter 2023Berlin, Berlin, GermanyActive
23
Cakework
CakeworkAPI that adds cloud hosting to any developer platform
Winter 2023Seattle, WAInactive
24
Camp
CampA Nouns DAO governance client
Winter 2021San Francisco, CAActive
25
Captain
CaptainGive AI agents accurate knowledge search that scales
Winter 2026San Francisco, CAActive
26
Caution
CautionHosting platform for software you can't afford to have hacked
Summer 2026George Town, George Town, Cayman IslandsActive
27
Cedana
CedanaFast, reliable, reproducible AI with GPU live migration
Summer 2023New York, NYActive
28
Celest
CelestThe Vercel of Flutter
Winter 2024San Francisco, CAInactive
29
Cerebrium
CerebriumServerless Infrastructure Platform for AI
Winter 2022New York, NYActive
30
Click
ClickResearch services for ChatGPT and Claude
Summer 2026San Francisco, CAActive
31
Converge
ConvergeAll-in-one marketing measurement for B2C
Summer 2023New York, NYActive
32
CrowdVolt
CrowdVoltThe integration layer for live events infrastructure
Winter 2024New York, NYActive
33
Cumbuca
CumbucaBare-metal access to Brazil's Open Finance and Pix systems
Summer 2021São Paulo, SP, BrazilActive
34
Decawork
DecaworkTraining company-specific models that approve AI actions.
Summer 2026San Francisco, CAActive
35
Denormalized
Denormalizedserverless platform for real-time data
Summer 2022San Francisco, CAInactive
37
Dreamscale Labs
Dreamscale LabsRunning robot brains in the cloud
Fall 2026San Francisco, CAActive
38
Eden Care
Eden CareClaims infrastructure for African health insurance
Summer 2023Nairobi, Nairobi County, KenyaActive
39
Elph
ElphAcquired by Brex. Building digital payments infrastructure.
Winter 2019San Francisco, CAAcquired
40
Encord
EncordThe data layer for physical AI
Winter 2021London, England, United KingdomActive
41
Engines
EnginesSetup any repo with one command
Winter 2024San Francisco, CAInactive
43
expand.ai
expand.aiTurn any website into an API.
Summer 2024San Francisco, CAActive
44
Expanse
ExpanseUnlock wasted GPU capacity.
Spring 2026San Francisco, CAActive
46
Fern
FernEnabling physical AI at scale.
Winter 2026Active
47
Fly.io
Fly.ioRun full stack apps close to your users.
Winter 2020Chicago, ILActive
48
Glide
GlideCrypto Deposits, Wallet Funding, and Pay-with-crypto Infra
Summer 2023New York, NYActive
49
Golf
GolfAgentic AI Security and Governance
Spring 2025San Francisco, CAActive
50
Hatchet
HatchetThe orchestration platform for teams who ship.
Winter 2024New York, NYActive
51
HelixDB
HelixDBThe fastest & most scalable graph-vector database on the market
Spring 2025London, England, United KingdomActive
53
Hiro
HiroYour first security hire
Summer 2023New York, NYActive
54
Hopper
HopperFast inference for voice
Fall 2026San Francisco, CAActive
55
HUBUC
HUBUCGlobal Card Issuing and Payment Processing Engine
Winter 2021Barcelona, CT, SpainActive
56
HyperDX
HyperDXOpen-source, dev-friendly observability.
Summer 2022San Mateo, CAAcquired
57
Hyrex
HyrexThe COLD Task Framework
Summer 2024San Francisco, CAActive
58
Inkbox
InkboxThe identity and communication layer for AI agents
Summer 2026San Francisco, CAActive
59
InsForge
InsForgeThe agent-native cloud infrastructure platform
Spring 2026San Francisco, CAActive
60
KERNEL
KERNELCrazy fast, open source infra for AI agents to use the Internet
Summer 2025San Francisco, CAActive
61
Kestrel AI
Kestrel AIAI Agents for Platform Engineering
Fall 2025San Francisco, CAActive
62
Lambda Robotics
Lambda RoboticsRobotics for AI Infrastructure
Fall 2026San Francisco, CAActive
63
Leafpress
LeafpressAI Energy Management
Summer 2023Inactive
64
Lemma
LemmaReliability platform for AI agents
Fall 2025San Francisco, CAActive
65
Lilac
LilacWe automatically monetize idle GPUs
Summer 2025San Francisco, CAActive
66
Lingo.dev
Lingo.devThe Localization Engineering Platform
Fall 2024San Francisco, CAActive
67
LLM Stats
LLM StatsIndependent AI evaluations lab
Summer 2025New York, NYActive
68
Luca IQ
Luca IQAPI-first tax engine for CPA firms and developers
Summer 2026Boston, MAActive
69
Lume
LumeSpeed up customer implementation with AI
Winter 2023Acquired
70
Mach9
Mach9AI-native CAD software for civil engineering
Summer 2021San Francisco, CAActive
71
Magnitude
MagnitudeThe best coding agent for open models
Summer 2025San Francisco, CAActive
73
Maritime
MaritimeThe managed cloud for AI agents.
Fall 2026San Francisco, CAActive
74
Mem0
Mem0The Memory layer for AI Agents
Summer 2024San Francisco, CAActive
75
Modelence
ModelenceThe full-stack platform for agentic development
Summer 2025San Francisco, CAActive
76
Monte
MonteContinual Learning for Agents
Summer 2025San Francisco, CAActive
77
Naïve
NaïveAutonomous Company Infrastructure
Spring 2025San Francisco, CAActive
79
Nodus Compute
Nodus ComputeIntelligent execution layer for AI workloads
Fall 2026San Francisco, CAActive
80
NowHouse
NowHouseNowHouse helps stock brokerages settle trades instantly.
Winter 2024New York City, NYActive
82
OneCLI
OneCLIThe open source AI teammates for your company.
Summer 2026San Francisco, CAActive
83
OneTriangle
OneTriangleThe cheapest, fastest inference cloud
Summer 2026San Francisco, CAActive
86
Osmosis
OsmosisReinforcement Learning (RL) for AI Agents
Winter 2025San Francisco, CAActive
87
Outlit
OutlitCustomer Context for Agents
Winter 2025San Francisco, CAActive
88
Oway
OwayAI Infrastructure for America’s Empty Truck Space
Summer 2024San Francisco, CAActive
89
Panoptive
PanoptiveReal-time defensible oversight for clinical trials
Summer 2025San Francisco, CAActive
90
Panora
PanoraTurning messy inboxes into ERP-Ready Data
Summer 2024San Francisco, CAActive
91
ParadeDB
ParadeDBSimple, Elastic-quality search for Postgres
Summer 2023San Francisco, CAActive
93
PerfectBit
PerfectBitTraining data for frontier AI labs
Spring 2026San Francisco, CAActive
94
Pipeshift
PipeshiftInference for real-time agents
Summer 2024San Francisco, CAActive
95
Playgent
PlaygentSandboxes for AI agents
Summer 2025San Francisco, CAActive
96
Pluto
PlutoRegulated derivatives exchange
Winter 2025New York, NYActive
97
PrimeVault
PrimeVaultInfrastructure powering stablecoin and digital finance
Summer 2022San Francisco, CAActive
98
primitive
primitiveCommunication for agents
Spring 2026San Francisco, CAActive
100
RDash
RDashAI Powered Construction Management Software
Winter 2022Gurugram, HR, IndiaActive

The other 37 companies

Every remaining company in this list, A to Z. Each link opens the company's public page.

Applying to YC? Study these applications first.

YC Insights holds the reconstructed application of every company on this page, filterable by batch, industry and country, next to 60,000+ investors who fund startups like yours.

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About this list

This list is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

Frequently Asked Questions

How many Y Combinator companies are in tagged Infrastructure?

This directory lists 137 YC companies in tagged Infrastructure, out of 6,207 across every batch since 2005. The count updates when the directory is refreshed, and every one of them is on this page with a link to its public profile.

Are the YC applications on these pages real?

No. YC keeps submitted applications private. Every application linked from this list is a reconstruction: the real YC form questions, answered from the company's public data. The Company section is free on each page; the rest opens in YC Insights.

How do I use this list when applying to YC?

Pick five companies on this page whose product is closest to yours, read their reconstructed applications side by side in YC Insights, and note how each answers the same question. Then write your own answers to that standard.

Where does this data come from?

From YC's public company directory, refreshed by batch, with each company's status, industry and location as YC reports them. Round Funded adds the reconstructed application and the founder profiles; nothing private is published.

What is Round Funded?

Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.