How to use from
llama.cpp
Install (macOS, Linux)
curl -LsSf https://llama.app/install.sh | sh
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf zenlm/zen-eco-4b-instruct:F16
# Run inference directly in the terminal:
llama cli -hf zenlm/zen-eco-4b-instruct:F16
Install from WinGet (Windows)
winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf zenlm/zen-eco-4b-instruct:F16
# Run inference directly in the terminal:
llama cli -hf zenlm/zen-eco-4b-instruct:F16
Use pre-built binary
# Download pre-built binary from:
# https://github.com/ggerganov/llama.cpp/releases
# Start a local OpenAI-compatible server with a web UI:
./llama-server -hf zenlm/zen-eco-4b-instruct:F16
# Run inference directly in the terminal:
./llama-cli -hf zenlm/zen-eco-4b-instruct:F16
Build from source code
git clone https://github.com/ggerganov/llama.cpp.git
cd llama.cpp
cmake -B build
cmake --build build -j --target llama-server llama-cli
# Start a local OpenAI-compatible server with a web UI:
./build/bin/llama-server -hf zenlm/zen-eco-4b-instruct:F16
# Run inference directly in the terminal:
./build/bin/llama-cli -hf zenlm/zen-eco-4b-instruct:F16
Use Docker
docker model run hf.co/zenlm/zen-eco-4b-instruct:F16
Quick Links

zen-eco-4b-instruct

Instruction-tuned general-purpose language model (foundation Eco line).

Fine-tuned from Qwen/Qwen3-4B-Instruct-2507 (apache-2.0, Alibaba Qwen) with Hanzo identity + agentic-data training + abliteration. Not trained from scratch.

Specs

Property Value
Parameters 4B (dense)
Architecture Qwen3 (Qwen3ForCausalLM)
Context 262144

License

apache-2.0. Upstream: Qwen/Qwen3-4B-Instruct-2507 by Alibaba Qwen (apache-2.0).

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Safetensors
Model size
4B params
Tensor type
F16
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