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Mini toolsHy3 295B
By Tencent
Model family: Hunyuan
Hy3 is a 295B-parameter Mixture-of-Experts model with 21B active parameters and 3.8B MTP layer parameters, built on 192 experts with top-8 routing across 80 layers. It supports a 256K token context window and a switchable reasoning mode (no_think, low, high) for balancing speed and depth on math, coding, and multi-step reasoning tasks. Hy3 shows strong agentic performance, including reliable tool calling and consistent behavior across agent scaffolds such as CodeBuddy, Cline, and KiloCode, with SWE-Bench Verified accuracy varying by less than 4 percent across them. Versus its preview version, Hy3 lowers hallucination rates and improves multi-turn context retention and long-dialogue coherence. Suited for coding, office productivity, financial modeling, frontend design, and general agentic assistant use cases. Released under Apache 2.0 with BF16 precision support.
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Overview
Hy3 is a 295B-parameter Mixture-of-Experts language model with 21B active parameters, developed by the Tencent Hy team. It offers strong reasoning, coding, and agentic capabilities with a 256K token context window, improved tool-call reliability, and reduced hallucination compared to its preview version.
About Tencent
Tencent is a world-leading internet and technology company that develops innovative products and services to improve the quality of life of people around the world.
Industry:
Technology, Information and Media
Company Size:
110558
Location:
Shenzhen, CN
Website:
tencent.com
Last updated: July 14, 2026
