Chipletz
Chipletz is a fabless semiconductor substrate vendor developing Smart Substrate™ advanced packaging that eliminates interposers for chiplet integration, targeting AI and HPC system manufacturers with glass and organic substrate-based die-to-die interconnect solutions.
- Company typePrivate
- Founded2021
- HeadquartersAustin, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Chipletz does
Chipletz, Inc. is a fabless semiconductor substrate vendor founded in 2021 and headquartered in Bee Cave, Texas (Austin metropolitan area). The company develops advanced packaging technology for chiplet integration in AI and high-performance computing (HPC) systems. Its flagship product, Smart Substrate™, is an interposer-less packaging architecture that allows heterogeneous chips — including compute, IO, security, and HBM modules sourced from multiple vendors — to be integrated onto a single substrate, with the substrate effectively functioning as the system. A complementary technology called Wallstrip provides a novel die-to-die interconnect structure using glass and organic substrates, demonstrating improved insertion loss and crosstalk characteristics for high-speed D2D routing.
The company targets AI accelerator and HPC system manufacturers as its primary segment, with a secondary segment spanning traditional and emerging semiconductor companies seeking next-generation packaging solutions. Chipletz operates a B2B enterprise field-sales motion, engaging semiconductor manufacturers and system integrators directly through technical presentations at industry conferences (notably DesignCon 2026) and through deep collaboration with EDA partners — most prominently Siemens EDA, whose Innovator3D IC suite and Calibre 3DStress tools have been integrated into Chipletz's design flow. Revenue mechanics are hardware sales of Smart Substrate products on a fabless basis, with custom pricing per design and no publicly disclosed price points. The leadership team is composed almost entirely of AMD packaging veterans, including the former Senior Fellow who led the first HBM implementation (Fiji GPU) and a CTO who developed nearly all of AMD's packaging solutions over two decades.
Chipletz emerged from stealth mode in February 2026, publicly presenting its technology at DesignCon 2026 and announcing that it is delivering samples and conducting SI/PI simulations in preparation for commercial launch. The company has secured at least one funding round from SKC (announced September 2023, amount undisclosed) and operates as a private, venture-backed startup with 11-50 employees. No customer logos, revenue figures, or patent counts have been disclosed in available sources.
Chipletz firmographics
Firmographics- Name
- Chipletz
- Legal name
- Chipletz, Inc.
- Website
- https://chipletz.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Chipletz is a fabless semiconductor substrate vendor developing Smart Substrate™ advanced packaging that eliminates interposers for chiplet integration, targeting AI and HPC system manufacturers with glass and organic substrate-based die-to-die interconnect solutions.
- Ownership category
- akta.pro rank
Chipletz industry classification
Industry- Product category
- Advanced Semiconductor Packaging
- NAICS
- Semiconductor Machinery Manufacturing (333242)
- SIC
- Printed Circuit Boards (3672)
- akta.pro primary industry
- Advanced Packaging (2.5D/3D-IC, Fan-Out WLP, Chiplets) (HDAHADAB)
- akta.pro secondary industry
- AI Hardware IP & Chiplet/Packaging for Accelerators (EDA/IP, advanced packaging) (HDAAAAAL)
Keywords
Where Chipletz is headquartered
LocationHeadquarters
- HQ city
- Austin
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Chipletz business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Infrastructure
Revenue model
- Smart Substrate Products: Fabless supplier of intelligent substrates for semiconductor packaging. Revenue generated from selling advanced substrate products to semiconductor manufacturers and system integrators in AI and HPC markets.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Chipletz product offering
Product offeringCore offering
Chipletz is a fabless supplier of intelligent substrates for advanced semiconductor packaging. Its Smart Substrate™ technology integrates multiple chips from different sources onto a single substrate without an interposer, enabling enhanced die-to-die bandwidth, faster external IO, and improved power integrity for AI and HPC systems. The company also develops the novel Wallstrip interconnect structure using glass and organic substrates.
Product overview
Chipletz offers Smart Substrate™ products, an advanced packaging technology addressing increasing demand for compute performance by providing denser computing capability. As a fabless supplier of intelligent substrates, Chipletz enables seamless integration of any chip from anywhere—from compute & IO to security & HBM. The company leverages cutting-edge chiplet integration technology that eliminates an interposer, using novel Wallstrip structures for superior die-to-die bandwidth, faster external IO, and improved power integrity for AI and HPC applications.
Differentiator
Problem solved
Functional benefit
Brands
- Smart Substrate™: Advanced packaging technology that enables chiplet integration without an interposer for AI and HPC systems
Products and services
- Smart Substrate™ Advanced semiconductor packaging technology that enables integration of multiple chips from different sources onto a single intelligent substrate, eliminating the need for an interposer to improve AI and HPC system performance.
- Wallstrip Novel die-to-die interconnect structure using glass and organic substrates that provides improved insertion loss and crosstalk performance for D2D routing technology.
Quantifiable outcome
- Improved Insertion Loss and Crosstalk performance for die-to-die routing technology
- +1 more outcomes
Companies that use Chipletz
Customer profileSegments2 records
Ideal customer profiles2 records
Chipletz technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Chipletz partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Siemens EDAcoreChipletz selected Siemens' EDA solutions for its Smart Substrate IC packaging technology. The collaboration focuses on signal integrity (SI) and power integrity (PI) analysis for 3D IC design. The partnership includes early and holistic verification strategies for advanced semiconductor packaging, demonstrating collaborative approaches between Chipletz and Siemens EDA to address challenges in 2.5D and 3D IC design.
- Siemens Digital Industries SoftwarecoreSiemens announced new products including Innovator3D IC suite and Calibre 3DStress aimed at addressing challenges in 2.5D and 3D IC design and manufacturing. These tools support Chipletz's Smart Substrate development for improved design management, accuracy in stress analysis, and early detection of potential issues in advanced IC architectures.
Scale indicators3 records
Recent moves5 records
Expansion highlights5 records
Chipletz competitors and assessment
Company assessmentDirect peers
- TSMC: World-leading foundry with dominant advanced packaging offerings (CoWoS, InFO, SoIC) for chiplet-based AI and HPC designs. Directly competes with Chipletz in 2.5D/3D heterogeneous integration and is the de facto incumbent Chipletz must displace or complement.
- Intel Foundry: Offers EMIB and Foveros advanced packaging technologies as part of its foundry services. Competes with Chipletz in chiplet integration for AI/HPC, and bundles packaging with leading-edge process nodes.
- Samsung Foundry: Provides I-Cube and X-Cube advanced packaging for chiplet-based designs targeting AI/HPC. A direct alternative to Chipletz Smart Substrate at large foundry customers.
- Amkor Technology: Largest US-headquartered OSAT with advanced 2.5D/3D packaging capabilities, including TSV and fan-out wafer-level packaging. Directly competes for AI/HPC packaging programs and is a key alternative to Chipletz's substrate approach.
- ASE Technology Holding: One of the world's largest OSATs with advanced packaging services including FOCoS and 2.5D/3D integration for chiplets. A direct competitor for advanced packaging of AI and HPC devices.
- Ibiden: Leading Japanese IC substrate manufacturer with advanced build-up substrate technology used in AI/HPC packaging. A direct peer in the advanced substrate supply chain.
- Shinko Electric Industries: Major Japanese IC substrate supplier specializing in flip-chip and build-up substrates for high-performance semiconductor packages. Competes in the same advanced substrate category as Chipletz.
- Unimicron Technology: Taiwanese IC substrate maker with ABF substrate leadership used in AI/HPC advanced packaging. A direct comparable for advanced substrate technology serving the chiplet integration market.
- JCET (Jiangsu Changjiang Electronics Technology): Large Chinese OSAT with growing advanced packaging capabilities including 2.5D/3D integration for chiplets. Competes for global advanced packaging programs, particularly in cost-sensitive AI applications.
Broad incumbents
- SKC: Major Korean materials and substrate manufacturer and a disclosed Chipletz investor. Comparable as a substrate industry incumbent that could supply competing advanced substrate technology, and relevant given its potential role as Chipletz's manufacturing partner.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
Chipletz social profiles
Digital presenceChipletz financial estimates
Financial estimateRevenue estimate
Valuation estimate
Chipletz leadership team
Management profileNumber of profiles
Profiles6 records
Chipletz funding detail
Funding detailFunding overview
Funding rounds1 record
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Chipletz M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Chipletz
What does Chipletz do?
Chipletz is a fabless supplier of intelligent substrates for advanced semiconductor packaging. Its Smart Substrate™ technology integrates multiple chips from different sources onto a single substrate without an interposer, enabling enhanced die-to-die bandwidth, faster external IO, and improved power integrity for AI and HPC systems. The company also develops the novel Wallstrip interconnect structure using glass and organic substrates.
Is Chipletz a public or private company?
Chipletz is a private company. It is classified as venture growth investor backed and is currently operating.
When was Chipletz founded?
Chipletz was founded in 2021. It employs 11 to 50 people.
Where is Chipletz based?
Chipletz is headquartered in Austin, United States, in the North America region.
How does Chipletz make money?
One revenue line is on record: smart Substrate Products.
Who are Chipletz's main competitors?
Direct peers on record are TSMC, Intel Foundry, Samsung Foundry, Amkor Technology, ASE Technology Holding, Ibiden, Shinko Electric Industries, Unimicron Technology and JCET (Jiangsu Changjiang Electronics Technology). SKC is listed as a broad incumbent.
Does Chipletz have an API?
No public API is recorded for Chipletz.
What industry is Chipletz in?
Chipletz's product category is Advanced Semiconductor Packaging. Its primary akta.pro industry code is HDAHADAB, Advanced Packaging (2.5D/3D-IC, Fan-Out WLP, Chiplets), with a secondary code of HDAAAAAL, AI Hardware IP & Chiplet/Packaging for Accelerators (EDA/IP, advanced packaging). Its NAICS code is 333242 and its SIC code is 3672.