Machine Heart

Aug 28, 2026 · Artificial Intelligence

Hy4 Preview: Tencent's 770B Open-Source LLM Boosts Throughput 31.8% and Reaches Top‑5 Arena Rank

Tencent released the Hy4 preview, a 770‑billion‑parameter open‑source LLM with 49 B activation memory and 1 M context, detailing its MoE architecture, 31.8% throughput gain, benchmark improvements over Hy3, pricing, and its rise to a top‑5 position on the Arena Code leaderboard.