Meta Reveals Four Broadcom-Built Custom AI Chips: MTIA 300-500, Claims Some Outperform Commercial Silicon
Meta has unveiled four previously unknown custom AI chips — MTIA 300, 400, 450, and 500 — built in close partnership with Broadcom. Some models claim to outperform leading commercial products, with Meta now capable of shipping a new chip roughly every six months.
The Chip Lineup
| Chip | Purpose | HBM | Status |
|---|---|---|---|
| MTIA 300 | Ranking & recommendations | Standard | In production |
| MTIA 400 | GenAI + R&R | Standard | Path to deployment |
| MTIA 450 | GenAI inference (optimized) | 2x MTIA 400 | Early 2027 |
| MTIA 500 | Efficient GenAI inference | 50% more than 450 | 2027 |
Key Details
- MTIA 300: Compute chiplet + 2 network chiplets + HBM stacks. Each PE has RISC-V vector cores. Used for ranking and recommendation workloads.
- MTIA 400: First with "raw performance competitive with leading commercial products." 72 devices per rack form a single scale-up domain via switched backplane.
- MTIA 450: Doubled HBM bandwidth → "much higher than existing leading commercial products."
- MTIA 500: 2x2 smaller compute chiplets + HBM + SoC chiplet for PCIe/NIC connectivity.
The Velocity
Meta can now ship a new chip every ~6 months. The 400, 450, and 500 all use the same chassis, rack, and network infrastructure — enabling modular, rapid iteration.
Broadcom confirmed Meta will install "multiple gigawatts" of its chips in 2027 and beyond.
The Oversight Problem
Meta's Oversight Board simultaneously criticized the company for failing to flag AI-generated deceptive content during the 2025 Iran-Israel conflict, calling its mechanisms "neither robust nor comprehensive enough."
Source: The Register