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Firworks/
c4ai-command-a-03-2025-nvfp4

Name: c4ai-command-a-03-2025-nvfp4
Availability: InStock

safetensors

cohere2

HuggingFaceH4/ultrachat_200k

CohereLabs/c4ai-command-a-03-2025

quantized

8-bit

compressed-tensors

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c4ai-command-a-03-2025-nvfp4

Format: NVFP4 — weights & activations quantized to FP4 with dual scaling.
Base model: CohereLabs/c4ai-command-a-03-2025
How it was made: One-shot calibration with LLM Compressor (NVFP4 recipe), long-seq calibration with HuggingFaceH4/ultrachat_200k.

Notes: Keep lm_head in high precision; calibrate on long, domain-relevant sequences.

Check the original model card for information about this model.

Running the model with VLLM in Docker

sudo docker run --runtime nvidia --gpus all -p 8000:8000 --ipc=host vllm/vllm-openai:nightly --model Firworks/c4ai-command-a-03-2025-nvfp4 --dtype auto --max-model-len 32768

This was tested on an RTX Pro 6000 Blackwell cloud instance.

If there are other models you're interested in seeing quantized to NVFP4 for use on the DGX Spark, or other modern Blackwell (or newer) cards let me know. I'm trying to make more NVFP4 models available to allow more people to try them out.