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TechTencent releases Hy4 preview with 770B parameters and 1M token context window
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Tencent's Hunyuan engineering team has released the Hy4 preview, a large language model with 770 billion total parameters and 49 billion active parameters. The model features a 1 million token context window designed for massive codebase retention and sustained long-horizon execution. It also supports advanced multi-source tool use. The model is specifically built to handle long-horizon software engineering and multi-step agentic workflows without losing context. Benchmarks reportedly back up the model's scale and performance claims.
Source report
The engineering team at @TencentHunyuan has released the Hy4 preview, a large-scale language model with significant capabilities.
Key Specifications
- 770B total parameters
- 49B active parameters
- 1M token context window for massive codebase retention
- Sustained long-horizon execution
- Advanced multi-source tool use
Purpose and Design
The model was built specifically to handle long-horizon software engineering and multi-step agentic workflows without losing context. Benchmarks support the scale and performance of this release.
Source
DataChazNeutral / independent
Part of this Story
Tencent Open-Sources Hy4 Preview, a 770B-Parameter MoE AI Model