Inference systems

Etched is building rack-scale inference clusters.

Inference is the work of running a trained AI model to produce an answer. Etched designs the custom processor, memory system, boards, servers, racks and operating software used to perform that work.

The current system combines the first manufactured revision of Etched's processor with stacked high-bandwidth memory, links between processors, server control, power and liquid cooling. TSMC makes the processor using its N4P chip-manufacturing process.

System
Rack-scale inference cluster
Silicon
First manufactured revision (A0), made by TSMC using N4P
Physical form
Accelerator modules, servers and liquid-cooled racks
Operating footprint
San Jose, Milpitas and Taiwan
  1. Seed financing
  2. Sohu program
  3. First manufactured chips
  4. Customer-system validation

01 / System

From a model request to a rack

Etched designs the compute, memory and connectivity together. Servers and racks provide the control, power and cooling around that silicon.

A model request moves through inference software, an Etched accelerator, scale-up connectivity, a server and a liquid-cooled rack.
  1. 01 Model request Input and context
  2. 02 Inference software Model placement and execution
  3. 03 Etched accelerator Custom processor with stacked memory beside it and fast memory built in
  4. 04 Links between processors Move model data across accelerators
  5. 05 Server tray Boards, internal connectors and control computer
  6. 06 Liquid-cooled rack Power, cooling and networking
Etched system layers
Layer What it does System elements
Accelerator Runs model operations beside stacked memory that feeds it data quickly Custom processor, high-bandwidth memory, fast on-chip memory and physical signal interfaces
Server Connects, starts and manages accelerators Accelerator boards, a main board, internal connectors, a management controller, startup firmware and high-speed networking
Rack Supplies power, cooling and cluster connectivity 48 V conversion, power shelves, liquid loop, manifolds and networking

02 / Company

Public company names and operating footprint

Etched uses two legal names across its current website, patent, lender and investment records.

Names used in public records

Operating and product brand

Etched, Inc.

Company name used in Etched website terms and privacy materials.

IP and financing record

Etched.AI, Inc.

Company name used in patent, lender and investment records.

Operating footprint

San Jose

3155 Olsen Drive

Company operations and product development.

Milpitas

195 S Milpitas Boulevard

10 MW new-product introduction, in-house circuit-board assembly and deployment facility.

Taiwan

Hardware and production

Factory, hardware engineering and partner manufacturing operations.

03 / Capital

Equity, investment channels and venture debt

Etched has funded silicon, manufacturing and system deployment through four reported equity rounds and venture-credit facilities.

  1. $5.4m

    Seed

    Reported $34m valuation.

  2. $120m

    Series A

    Led by Primary Venture Partners and Positive Sum Ventures, with Peter Thiel, Amjad Masad, Thomas Dohmke and Balaji Srinivasan named as participants.

  3. $500m

    Financing round

    Closed in December at a reported $5bn post-money valuation. Stripes led, with Peter Thiel, Positive Sum Ventures and Ribbit Capital. Jane Street, Hudson River Trading, Two Sigma and VentureTech Alliance were also in the round and first disclosed on 30 June 2026.

  4. $300m

    Series C

    Led by Sequoia at a $10.3bn valuation, with Andreessen Horowitz, Jane Street, Diffusion, Argo and SK hynix.

Capital channels. Matching TriplePoint positions are shown by registrant.
Channel Named participants Entered / first public record Position
Direct preferred holder StepStone Private Venture and Growth Fund Shares acquired 30 Dec 2025 67,513 preferred shares in the 31 Mar 2026 public schedule
Direct preferred holder TriplePoint Private Venture Credit Shares acquired 19 Apr 2024 307,570 preferred shares in the 31 Mar 2026 public schedule
CGF2021 / Sydecar vehicles Etched AI Mar 2024; F&F Mar 2025; Series B F&F; Angels III; Angels IV First sale 16 Apr 2024 (filed 23 Apr); filed 23 Jun 2025, 6 Feb 2026, 13 Jul 2026 and 15 Jul 2026 Vehicles organised around Etched equity participation
Oceans Ventures vehicles Etched I; Etched II; Etched III; Etched IV Filed 23 May 2024; 29 Jan 2026; 29 Jan 2026; 6 Feb 2026 Vehicles organised around Etched equity participation
Independent Etched SPV Etched SPV, LLC; Benjamin Lincoln named as manager Filed 27 Jan 2026 $3.75m reported sold by the investment vehicle
Innova Etched LLC Single-company Etched equity vehicle Broker-reported position began 2 Jan 2026 $500,000 restricted membership-interest position reported by one broker
TPVC debt / warrant TriplePoint Private Venture Credit Revolver and warrant acquired 18 Jul 2025 $4.5m outstanding and $5.5m unfunded; a 12,110-share warrant
TPVG debt / warrant TriplePoint Venture Growth BDC Revolver acquired 18 Jul 2025; first shown in the 30 Sep 2025 schedule $4.5m outstanding and $25.5m unfunded; a 12,110-share warrant
IP security TriplePoint Capital Effective 19 Apr 2024 and 18 Jul 2025 Patent-security records

04 / Supply chain

One system, built in layers

The product moves from chip design through processor and stacked memory manufacturing, assembly into one package, circuit-board production, server integration, rack power and liquid cooling.

  1. Design and IP
  2. Silicon and memory
  3. Package and test
  4. Board and server
  5. Power and cooling
  6. Deployment

The manufacturing records use L6 for a completed board, L10 for a complete server or tray, and L11 for a complete rack.

A

Design and IP

Turns the architecture into verified logic, interfaces, boards and mechanical designs.

Design and IP supplier routes
Component or workSupplier routes
Executable specification and register automation
Named relationshipAgnisys — IDesignSpec and associated IP
Stacked-memory controller and physical signal interface
Named relationshipRambus
Hardware-assisted emulation
Named relationshipSynopsys ZeBu
Chip, PCB, mechanical and EM engineering tools
Named relationshipCadence Allegro and Innovus; Siemens NX; Ansys HFSS
Physical interface for high-bandwidth memory
Likely supply routeCadence
Alternative routeSynopsys; Global Unichip

B

Silicon, memory, package and test

Makes the processor and stacked memory, combines their silicon pieces in one package, then tests the completed device.

Silicon, memory, package and test supplier routes
Component or workSupplier routes
Logic silicon
Named relationshipTSMC N4P
High-bandwidth memory
Named relationshipSK hynix — engineering samples and initial hardware testing
Likely supply routeSK hynix — production high-bandwidth memory
Alternative routeSamsung; Micron
Combine processor and memory dies on one connecting layer and build the package
Likely supply routeTSMC 3DFabric / CoWoS
Alternative routeASE / SPIL; Amkor
Package substrate — the small circuit board beneath the silicon
Likely supply routeUnimicron / UMTC; Ibiden; Toppan
Alternative routeKinsus; Nan Ya
Build-up and reinforcement materials
Likely supply routeAjinomoto Fine-Techno; Nittobo; Mitsui; Resonac; MGC
Test each chip on the wafer, after packaging and in a working system
Likely supply routeAdvantest V93000; Chroma
Alternative routeTSMC test; ASE; KYEC

C

Board, server and rack build

Mounts packaged accelerators on boards, builds complete servers and integrates the rack.

Board, server and rack supplier routes
Component or workSupplier routes
Package, board, server and rack production
Named production roleLarge Taiwan contract manufacturer that builds hardware to Etched's design
Board/server materials and server development
Named production roleTaiwan-based joint design manufacturer that helps design and build the server
Server co-design and rack integration
Likely supply routeFoxconn / Ingrasys; Wistron / Wiwynn; Quanta / QCT; Pegatron
Server PCB
Likely supply routeGold Circuit Electronics
Alternative routeCompeq; Unimicron; Zhen Ding
Low-loss PCB laminate
Likely supply routeTaiwan Union Technology
Alternative routeElite Material; ITEQ; Ventec
Board voltage regulation
Likely supply routeMonolithic Power Systems
Alternative routeInfineon; Renesas; Texas Instruments; onsemi
PCIe retimers and switches
Likely supply routeBroadcom; Credo; Astera Labs
Connectors and cable harnesses
Likely supply routeTE Connectivity; Molex; Luxshare; Amphenol; Samtec; BizLink
Enclosures and rail systems
Likely supply routeChenbro; King Slide
Alternative routeAIC; InWin

D

Rack power and liquid cooling

Delivers stable high-current power and removes heat from accelerators through a closed liquid loop.

Rack power and liquid-cooling supplier routes
Component or workSupplier routes
Rack power shelves
Likely supply routeDelta Electronics
Alternative routeLITEON; Advanced Energy; AcBel
Cold plates, manifolds and coolant distribution
Likely supply routeAuras
Alternative routeAsia Vital Components; Delta; LITEON; CoolIT
Quick-disconnect interface
Named relationshipCPC and Etched — UQDv2 technical work
Likely supply routeCPC Everis UQD
Alternative routeStäubli; Danfoss Hansen; SITELIN
Facility-side coolant distribution
Likely supply routeAuras; Delta; LITEON; CoolIT

05 / Production

From design release to a running cluster

Each step adds physical hardware, test data and system-level control until the rack can run customer workloads.

  1. 01

    Custom processor and memory design

    Finish the processor logic, memory system, package and signal interfaces.

  2. 02

    Processor, memory and package

    Make the silicon, place stacked memory beside the processor and assemble the complete device.

  3. 03

    Device test

    Test each chip before cutting the wafer, after packaging and inside a working system.

  4. 04

    Board and server build

    Assemble accelerator boards, main boards and complete servers.

  5. 05

    Rack integration

    Install power, networking and liquid cooling, then run the rack under load to find early failures.

  6. 06

    Customer operation

    Deploy the cluster, load models and operate inference services.