Qwen3.5-397B-A17B-FP8
Support summary
Qwen3.5-397B-A17B-FP8 is a checkpoint published by Qwen, built on the Qwen3_5MoeForConditionalGeneration architecture. Official recipes or cookbooks cover vLLM and SGLang, without pinning a stable release.
- Documented hardware
- NVIDIA / CUDA and AMD / ROCm
- Documented features
- Multi-token prediction, Prefix caching, Reasoning parsers, Speculative decoding, and Tensor parallelism
- Configured context
- 262,144 tokens
- License
- apache-2.0
Hardware, quantization and features count only statements about this checkpoint; engine-wide capabilities are listed with each release.
Hugging Face model card
- Publisher
- Qwen
- Task
- image text to text
- License
- apache-2.0
- Library
- transformers
- Architecture
- Qwen3_5MoeForConditionalGeneration
- Weight tensor elements
- 403.4B
- Tensor types
- BF16, F8_E4M3, F32
- Quantization
- fp8
- Configured context
- 262,144 tokens
- Base models
- Qwen/Qwen3.5-397B-A17B
- Weight access
- Public
- Repository created
- 2026-02-18
Engine support
3 engines
| Engine | Release | Checkpoint support | Evidence scope | Last known supported |
|---|---|---|---|---|
| vLLM | Version not pinnedRecipe / cookbook | Documented recipeSource: vllm · models/Qwen/Qwen3.5-397B-A17B.yamlReviewed | No supported release indexed | |
Features, dependencies and evidence for vLLM 0.28.0 | ||||
| SGLang | Version not pinnedRecipe / cookbook | Documented recipeSource 1: sglang · docs/cookbook/autoregressive/Qwen/Qwen3.5.mdxSource 2: sglang · docs/src/snippets/autoregressive/qwen35-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 | ||||