25D And 3D Ic Packaging Market For Ai Accelerators Market Size, Share and Growth Analysis Report - Forecast Trends and Outlook 2026-2030

2.5D packaging places dies such as logic and high-bandwidth memory on a silicon interposer, while 3D packaging uses through-silicon vias (TSVs) and hybrid bonding to stack dies vertically, both of which are critical for AI accelerators that need terabytes-per-second of memory throughput. The market is worth approximately $42.651 billion in 2026 and is forecast to grow at an 11.36% compound annual rate. Estimates vary widely across analysts because the segment is sometimes defined narrowly around AI accelerator packaging and sometimes around all 2.5D/3D semiconductor packaging, but the underlying technology base is the same set of foundries, OSATs, and equipment vendors.

Generative AI training runs and large-language-model inference are the dominant demand drivers, since transformer models are memory-bandwidth-bound and benefit directly from HBM-attached accelerator packages. Hyperscalers such as NVIDIA, AMD, Google, AWS, and Microsoft are deploying accelerators in volume, and each generation raises the die count and HBM stack height per package. Supply-chain constraints and the high cost of advanced packaging capacity mean that whoever secures interposer, TSV, and hybrid bonding throughput controls a chokepoint for the AI build-out.

By packaging type, the market splits into 2.5D (silicon interposer, RDL fan-out, and embedded multi-die interconnect bridge or EMIB) and 3D (TSV-based memory stacking and logic-on-logic hybrid bonding). By application, AI accelerators for data centers represent the largest and fastest-growing slice, followed by high-performance computing, networking ASICs, and edge AI devices. Geographically, Taiwan and South Korea lead production through TSMC and Samsung, the United States is the largest consumer and is rapidly localizing capacity via Intel Foundry and TSMC's Arizona fabs, and China is investing aggressively in domestic alternatives under export-control pressure.

What are the recent trends and outlook?

Hybrid bonding is moving from research to high-volume manufacturing, enabling finer-pitch 3D stacking and replacing some thermocompression bonding steps. Glass interposers and larger-format panel-based advanced packa