Hy3-preview
Support summary
Hy3-preview is a checkpoint published by Tencent, built on the HYV3ForCausalLM architecture. vLLM 0.28.0, the newest indexed vLLM release, documents support. Official recipes or cookbooks cover SGLang, without pinning a stable release.
vLLM documents support in 14 of 20 indexed releases, from 0.20.0 to 0.28.0.
- Documented hardware
- NVIDIA / CUDA and AMD / ROCm
- Documented quantization
- BF16
- Documented features
- Multi-token prediction, Reasoning parsers, Speculative decoding, Tensor parallelism, and Tool calling
- Configured context
- 262,144 tokens
- License
- other
Hardware, quantization and features count only statements about this checkpoint; engine-wide capabilities are listed with each release.
Hugging Face model card
- Publisher
- Tencent
- Task
- text generation
- License
- other
- Library
- transformers
- Architecture
- HYV3ForCausalLM
- Weight tensor elements
- 298.8B
- Tensor types
- BF16, F32
- Configured context
- 262,144 tokens
- Weight access
- Public
- Repository created
- 2026-04-13
Model notes and sources
- vLLM v0.28.0 · docs/models/supported_models.md · 14 indexed revisions, v0.20.0 to v0.28.0
- tencent/Hy3-preview · publisher model card
- tencent/Hy3-preview · Hugging Face metadata
- tencent/Hy3-preview · publisher configuration
- vllm · models/tencent/Hy3-preview.yaml
- sglang · docs/cookbook/autoregressive/Tencent/Hunyuan3-Preview.mdx
- sglang · docs/src/snippets/autoregressive/hunyuan3-preview-deployment.jsx
- Reviewed
Engine support
3 engines
| Engine | Release | Checkpoint support | Evidence scope | Last known supported |
|---|---|---|---|---|
| vLLM | 0.28.0Newest indexed | Checkpoint evidenceSource: vLLM v0.28.0 · docs/models/supported_models.mdReviewed | 0.28.0This release | |
Features, dependencies and evidence for vLLM 0.28.0 | ||||
| SGLang | Version not pinnedRecipe / cookbook | Documented recipeSource 1: sglang · docs/cookbook/autoregressive/Tencent/Hunyuan3-Preview.mdxSource 2: sglang · docs/src/snippets/autoregressive/hunyuan3-preview-deployment.jsxReviewed | No supported release indexed | |
Features, dependencies and evidence for SGLang 0.5.19 | ||||
| TensorRT-LLM | 1.2.1Newest indexed | No matching evidence curated | No supported release indexed | |
Features, dependencies and evidence for TensorRT-LLM 1.2.1 | ||||