Quantization
- NVIDIA Model Optimizer:
0.45.0
- Recipe:
huggingface/qwen3_5/ptq/w4a16_nvfp4-fp8_attn-kv_fp8_cast
- MLP projections and
lm_head: W4A16 NVFP4
- Self-attention and the large linear-attention projections: FP8
- KV cache metadata: FP8 cast
- Preserved at source precision: vision tower, MTP, convolution and sensitive
Gated-DeltaNet projections selected by the NVIDIA recipe
- Calibration: 512 CNN/DailyMail text samples of at most 512 tokens; medical
benchmark cases were not used
- Source license: Apache-2.0
Full provenance and SHA-256 hashes are in quantization_manifest.json.
vLLM
vllm serve switzerchees/Reasoning-Medical-27B-NVFP4 \
--served-model-name EpistemeAI/Reasoning-Medical-27B \
--quantization modelopt \
--kv-cache-dtype bfloat16 \
--max-model-len 32768 \
--reasoning-parser qwen3 \
--limit-mm-per-prompt '{"image": 1, "video": 0}'
BF16 KV cache is recommended for accuracy and is forced explicitly above. The
exported recipe contains FP8 KV-cache metadata; with vLLM 0.23, leaving the flag
at auto therefore selects FP8 rather than the model's BF16 dtype. FP8 KV serving
should be treated as a separate accuracy/performance trade-off and validated for
the target runtime.
Limitations and safety
This quantized derivative has not been clinically validated. The upstream model
card reports medical benchmarks but no independent clinical validation and no
substantive medical-image benchmark. Quantization can introduce additional errors.
Do not use this model as a substitute for a physician, for autonomous diagnosis,
or for treatment decisions. German-language quality is evaluated separately and
is not implied by the upstream model's English language tag.