Companies

AI Infrastructure Companies

101 active companies tracked across 8 stack layers.

L1

Aligned Data Centers

Liquid-cooled hyperscale build prime. Adiabatic + immersion deployments at scale. Macquarie-backed. Energy-efficiency narrative differentiator vs traditional REIT colo.

Asetek

AIO liquid cooling on the consumer side; datacenter pivot from 2024 with In-Rack CDU products. Recent enterprise-AI strategy revival vs prior consumer focus.

Bloom Energy

Solid-oxide fuel-cell power systems. AI-datacenter angle: on-site behind-the-meter generation that bypasses 5-7yr grid interconnect queues. Named in 2025-2026 hyperscaler PPA announcements.

Compass Datacenters

Build-to-suit hyperscaler datacenters. Brookfield + Ontario Teachers backed. Single-tenant 50-200 MW campuses; tracked in any "who is building for hyperscaler X" question.

CoolIT Systems

Direct-to-chip liquid cooling specialist. OEM relationships with the big server vendors (Dell, HPE, Lenovo, Supermicro). Acquired by HMT in 2024; remains operationally independent.

Digital Realty

Largest colo REIT by footprint. PlatformDIGITAL fabric ties multi-tenant + hyperscaler power-shell builds. Pre-leased pipeline a tracked watch-point for AI demand visibility.

Eaton

Electrical management conglomerate. Datacenter segment provides switchgear, UPS, busway, and large-scale power distribution. AI cluster MW-scale build-out is a named tailwind in earnings.

Equinix

Interconnection-dense colo prime. xScale joint venture for hyperscale build. Higher revenue-per-MW vs Digital Realty due to interconnect mix.

GE energy spin-off; gas turbines + grid + electrification. AI-datacenter angle: substation + grid interconnect timeline (gas turbines are the fastest dispatchable peak source for hyperscaler power requests).

Generac

Backup power systems. Datacenter segment for diesel + natural-gas standby generators. AI-cluster MW-class backup at 99.999% availability requirements is a growth tailwind.

Iceotope

Chassis-level precision liquid cooling (PLC) — sits between air and immersion. Major Schneider Electric strategic partnership. Edge / regulated-data use cases where full immersion is impractical.

Iron Mountain

Records-management pivot to datacenter REIT. Frankfurt / Virginia / Phoenix datacenter campuses. Hyperscaler-class pipeline disclosed; underweight vs DLR / EQIX but growing fastest.

Modine Manufacturing

Thermal management OEM. Datacenter segment for CDU (coolant distribution unit) + chillers. Pivoted from auto thermal to datacenter as the priority business; renamed segment to Climate Solutions.

Munters Group

Climate solutions; datacenter business grew significantly with AI cluster heat-density tailwind. Air-side handlers + direct-to-chip liquid systems. Strong European hyperscaler exposure.

nVent Electric

Connection + protection products. Datacenter segment includes liquid-cooling infrastructure (CDUs, manifolds) following the EriksenLab + Trachte acquisitions. Direct-to-chip and immersion both addressed.

Powell Industries

Schneider Electric

Global energy + automation player. APC by Schneider is the legacy datacenter UPS brand; EcoStruxure is the modern stack. Direct competitor to Vertiv across the rack-to-utility power chain.

Stack Infrastructure

DigitalBridge-owned hyperscale builder; APAC + EMEA + Americas footprint. Pre-power-secured land bank the operational moat.

Vertiv

Power + thermal infrastructure for hyperscale + colocation data centers. UPS / switchgear / busway / rack PDU / liquid cooling. The most-mentioned name on hyperscaler datacenter capex commentary.

L2

Arista Networks

Cloud-networking incumbent. AI-spine + leaf switch deployments at the top hyperscalers. EOS software the named differentiator vs Cisco / Juniper. NVIDIA Spectrum-X partnership.

Astera Labs

Ayar Labs

Optical I/O for chip-to-chip + scale-up. TeraPHY + SuperNova product line. Intel + AMD + GlobalFoundries strategic partners. Co-packaged optics alternative for scale-up vs Ethernet scale-out.

Ciena

Cisco

Networking incumbent. Silicon One ASIC family the AI-fabric play vs Broadcom Tomahawk. Splunk acquisition closed 2024 added observability. Strong enterprise-AI on-prem narrative.

Coherent Corp.

Cornelis Networks

Omni-Path 200 / 400 successor (spun out of Intel 2020). InfiniBand-class fabric without NVIDIA Mellanox lock-in. Strong DOE / national-lab deployment base.

Credo Technology

Active electrical cables (AECs) + retimer + serdes ICs. AEC adoption inside racks the cheaper alternative to optical for sub-7m runs. 800G / 1.6T product cycle.

Enfabrica

Accelerated Compute Fabric (ACF) — NIC-meets-switch silicon. Pre-revenue with funded customer trials at major AI labs. AI-fabric-NIC alternative to NVIDIA BlueField.

Eoptolink Technology

Innolight Technology

Juniper Networks

Networking incumbent under pending HPE acquisition (regulatory review ongoing 2026). AI-Native Networking + Mist AIOps positioning. Apstra Intent-Based for AI fabric.

Lumentum Holdings Inc.

MACOM Technology Solutions Holdings, Inc.

L3

Amkor Technology

US-based OSAT. Arizona advanced-packaging facility under CHIPS Act funding; positioned for US-sourced HBM + chiplet packaging — geopolitical hedge against TSMC concentration.

ASE Technology

Worlds largest OSAT (outsourced semiconductor assembly + test). FOCoS-Bridge packaging is the merchant alternative to TSMC CoWoS — capacity ramp watched for cost-of-AI relief.

Micron Technology

HBM third entrant (~20% share). US-strategic supplier; CHIPS Act direct beneficiary. HBM3E 12-Hi stack the current product anchor; HBM4 roadmap announced for 2026.

Samsung Electronics

HBM second-source (~30% share). NVIDIA qualification delays on HBM3E remain a tracked watch-point. AMD MI300 / Intel Gaudi confirmed customer mix.

SK Hynix

HBM market leader (~50% share). HBM3E volume production lead; HBM4 sample shipments. Primary supplier into NVIDIA H100/H200/B200 + B100 platforms.

TSMC

CoWoS advanced packaging — the constrained step for AI accelerator + HBM integration. CoWoS-S / -L / -R / SoIC capacity expansion is the most-tracked supply-side number in 2026 AI infrastructure.

L4

Alphawave Semi

High-speed connectivity IP — SerDes, chiplets, and custom silicon for AI / datacenter interconnect.

AMD

MI300 / MI325 / MI350 Instinct accelerator family — the dominant merchant alternative to NVIDIA in AI training silicon. ROCm software stack maturity is the primary watch-point.

Arm Holdings

Broadcom Inc.

Cadence Design Systems

EDA leader — digital + analog implementation, simulation, and verification tools spanning the chip-design flow.

Cerebras Systems

Wafer-scale Engine — single-chip alternative to multi-chip GPU clusters. Filed for IPO in 2024 (deferred). Real production deployments in scientific / pharma + select hyperscaler inference.

Etched

Transformer-only inference ASIC (Sohu) — bets the whole die on the transformer architecture for far higher throughput-per-dollar.

Groq

LPU inference-only accelerator; deterministic-latency architecture. GroqCloud commercial inference service. Sample point for inference-specialised non-NVIDIA silicon path.

Intel

Tofino Ethernet ASIC IP (from Barefoot 2019 acquisition, then announced to wind-down 2023 but P4 ecosystem persists). Gaudi accelerator family + Ethernet-native networking pitch.

Marvell Technology, Inc.

NVIDIA

Rebellions

Korean AI inference chip startup. Atom chip + REBEL roadmap. Merged with Sapeon (SK Telecom AI chip subsidiary) in 2024. Sovereign-Korea-AI angle on inference silicon.

SambaNova Systems

Reconfigurable Dataflow Architecture (RDU) — appliance + cloud model. Strong enterprise + government deployments. Pivoted toward inference-of-large-models from training focus.

Semtech

PMDs (physical medium devices), copper + optical short-reach SerDes. AI cluster intra-rack copper interconnect product line. Sienna acquisition gave LoRa IoT.

Siemens EDA

EDA (ex-Mentor Graphics) — Questa/UVM verification, Tessent DFT, Calibre physical verification.

Synopsys

EDA leader — synthesis, place-and-route, verification, and the largest commercial silicon IP portfolio.

Tenstorrent

Wormhole + Blackhole AI chips on RISC-V cores. Open-source software stack (TT-Metalium). Jim Keller-led architecture; named in multiple sovereign-AI government compute initiatives.

L5

Anyscale

Commercial Ray; distributed training + inference platform.

Applied Digital

HPC datacenter operator transitioning to AI cloud SKU; CoreWeave ND lease.

Celestica

EMS / ODM whitebox networking supplier. Hyperscaler 400G / 800G switch builds — direct sole-source disclosed in earnings. AI-driven networking revenue the named growth segment 2024-2026.

Cloudflare

Workers AI = edge inference across 300+ PoPs; AI Gateway.

CoreWeave

AI-infrastructure neocloud peer; the public-comp reference for SpaceX/xAI compute-as-a-service positioning ahead of the IPO.

Crusoe

Stranded-energy GPU cloud; 200MW Abilene TX site for Oracle/OpenAI Stargate.

Fireworks AI

Inference platform optimized for open-weight LLMs and multi-modal.

Gretel

Synthetic-data API for LLM fine-tuning. Acquired by NVIDIA March 2025 (~$320M).

HPE

Slingshot fabric (from Cray HPE acquisition) — Ethernet-based HPC fabric for exascale supercomputers. AI-supercomputer wins (El Capitan, Frontier) the named credibility anchor.

Labelbox

Self-serve labeling platform + Alignerr expert network for LLM evals.

Lambda

GPU cloud + on-prem workstations; major H100/H200 rental capacity.

Meta Platforms

Largest single Ethernet-for-AI buyer; Ultra Ethernet Consortium driving member. AI Research SuperCluster + MTIA accelerator deployments use Ethernet fabric not InfiniBand.

MOSTLY AI

Synthetic tabular data for finance/healthcare where real data is PII-locked.

Nebius Group

Yandex spinout. NVIDIA-backed funding 2024. Finland + Kansas City GPU clusters.

Parallel Domain

Synthetic-data for AV/embodied AI. Toyota, Woven, Waabi customers.

Replicate

API-first inference for community-hosted models.

Scale AI

Largest RLHF/data-labeling vendor. Meta $14.3B investment Sept 2025.

Super Micro Computer

Surge AI

Premium-labeling competitor to Scale; PhD-level RLHF for Anthropic/OpenAI.

Together AI

Inference-as-a-service for open-weight models (Llama, DeepSeek, Qwen).

Vultr

Independent GPU cloud (H100/MI300X); 32 PoPs; AMD Instinct partnership.

L6

AI21 Labs

Jamba SSM/Transformer hybrid open-weights family; enterprise RAG focus.

Alibaba (Qwen)

Qwen2.5 / Qwen3 open-weights series — leading non-Western open-weights frontier.

Anthropic

Foundation-model + Claude product layer; enterprise team selling to compliance-sensitive verticals. Direct comparable to OpenAI for enterprise governance + measurement use cases.

Cohere

Enterprise-focused foundation-model lab; Command R+, Embed, Rerank.

DeepSeek

DeepSeek-V3 / R1 open-weights reasoning models; redefined cost-of-frontier Jan 2025.

Google DeepMind

Frontier model lab — Gemini family; Alphabet's consolidated frontier research unit.

Mistral AI

European open-weights + frontier-API lab; Mistral Large 2, Codestral, Mixtral.

Moonshot AI (Kimi)

Kimi long-context frontier-API lab; CN-market closed-API competitor to GPT/Claude.

OpenAI

Foundation-model + product layer; enterprise tier sells to F500 with governance / compliance gates. Reference customer for measuring enterprise AI adoption KPIs.

Physical Intelligence

VLA foundation-model lab (π0, π0.5); $2.4B valuation Nov 2024.

Skild AI

General-purpose robotics brain / cross-embodiment foundation model; $300M Series A.

Stability AI

Stable Diffusion 3 / SD3.5 / Stable Video; canonical open-weights image+video lab.

xAI

Owner of the Colossus supercomputer (Musk-affiliated); trains Grok on the 100K+ GPU Memphis cluster physically hosted/operated in the SpaceX orbit.

L7

Chroma

Developer-first OSS vector DB; default in LangChain/LlamaIndex tutorials.

Databricks

Lakehouse + Mosaic AI; enterprise customer for end-to-end model train/serve governance. Largest private-market valuation in the data-cloud-for-AI category. Pre-IPO; financials limited.

LlamaIndex

RAG/data-framework leader; document parsing + indexing for enterprise LLM apps.

Pinecone

Managed vector DB category leader. Notion AI / Shopify / Gong customers.

Qdrant

Rust-based OSS vector DB; X (Twitter), Bayer, Disney customers.

Unstructured

PDF/HTML/PPTX → LLM-ready chunks; ETL for unstructured data.

Weaviate

Open-source vector DB w/ managed cloud; hybrid search + multi-modal.

L1