Tencent’s AI division rebuilt its Hunyuan model from the ground up, releasing the 295‑billion‑parameter Hy3‑preview with a fast‑slow hybrid expert architecture, extensive internal benchmarks, and strong performance on scientific, coding, and real‑world tasks, marking a decisive leap into the leading LLM tier.
Tencent releases and open‑sources Hy3 preview, a 295‑billion‑parameter mixed‑expert LLM supporting 256K context, built on rebuilt pre‑training and RL infrastructure and guided by three principles—systematic capability, authentic evaluation, and cost efficiency—delivering strong gains in complex reasoning, context learning, code and agent tasks, and is already deployed across multiple Tencent products.
On April 23, Tencent released the open‑source Hy3 preview, a 295 B‑parameter hybrid expert model with 21 B active parameters and 256K context length, delivering substantial gains in complex reasoning, instruction following, code and agent tasks, achieving 40 % faster inference, lower costs, and strong benchmark results across Tencent’s AI products.
