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Hy3 Preview

TencentOpen WeightsPending Human Review

Hy3 Preview is the first major model released on Tencent’s rebuilt Hunyuan training infrastructure. Its mixture-of-experts language backbone has 295B total parameters and 21B active per token, with additional multi-token-prediction parameters. The model supports 256K context and targets reasoning, coding, instruction following, and agent workflows. Public weights use the Tencent Hy Community License, which differs from the later Apache-licensed stable Hy3 release. Preview limitations and licensing should be evaluated before deployment.

2026-04-23
295B total, 21B active
Mixture of Experts
Tencent Hy Community License

Specifications

Parameters
295B total, 21B active
Architecture
Mixture of Experts
License
Tencent Hy Community License
Context Window
262,144 tokens
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
Hunyuan
API Access
Available
Chat Interface
Available

Capabilities & Limitations

Capabilities
text generationreasoning
Known Limitations
Provider-reported evaluations need application-specific validationSparse or long-context serving can require substantial memoryCustom license conditions apply
Notable Use Cases
private model deploymentdocument and code workflowslanguage-model research
Tool Use Support
Yes

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