Stealthy chip startup Kepler emerges with new AI memory beyond silicon
After seven years in stealth, San Jose chip startup Kepler Computing officially emerged around September 10 (per WIRED), unveiling a new high-bandwidth AI memory it claims goes beyond silicon-based architectures, targeting the global memory supply bottleneck and price surges driven by AI inference demand. The company has raised $468M in total, including $245M in government support. All performance and manufacturing claims remain company statements without third-party verification.
Confirmed
- Founded in 2018 in San Jose by chip industry veterans; team includes founder Sasi Manipatruni (previously founder of Intel's FEINMAN center), per @npinto.
- Positioned as "new memory for AI" for high-throughput, highly interactive next-generation inference.
- Technical approach: 3D stacking plus a proprietary new material (a ferroelectric material per @Promptmethus), enabling higher density and lower power in older, available fabs, claiming leading chips without any EUV lithography.
- Performance claims: bandwidth per watt approaching SRAM, with capacity up to 10x that of SRAM and HBM.
- Funding: $468M total, including $245M in government support. Early investor @demianai posted about backing the company.
Unconfirmed
- All performance figures and "beyond HBM" / "reinventing beyond-silicon" claims are single-sided, with no third-party verification or volume production data.
Why it matters
- HBM is currently in global shortage with soaring prices; if Kepler's EUV-free route works, it could bypass the most expensive lithography step and scale at lower cost, with a vision of moving the world from compute scarcity to abundance.
- If its "SRAM-level bandwidth/watt plus HBM-beating capacity" combination materializes, it could reshape memory choices for next-generation inference chips.
2026-09-09 ~ 2026-09-11 · 8 related posts
Primary sources
- Stealth startup Kepler Computing emerges to tackle memory shortage with 3D stacking — nordicinst ·
- Stealth Chip Startup Kepler Emerges With EUV-Free 3D-Stacked HBM, $468M Raised — pstAsiatech ·
- Kepler exits stealth after 7 years with AI memory tech nearing SRAM bandwidth at 10x capacity — demian_ai ·
- [source] Stealth startup Kepler Computing emerges to tackle memory shortage with 3D stacking — nordicinst · 2026-09-09
- Kepler emerges from 7-year stealth with AI memory claiming SRAM-like bandwidth, 10x capacity — morganlai · 2026-09-10
- Kepler Computing emerges after 7 years in stealth with new AI memory chip beyond silicon — npinto · 2026-09-10
- Stealth startup Kepler Computing raises $468M for EUV-free HBM alternative using 3D ferroelectric stacking — Promptmethus · 2026-09-10
4 near-duplicate retellings: pstAsiatech · npinto · demian_ai · npinto