Configure the model in Pi
# Install Pi:
npm install -g @mariozechner/pi-coding-agent# Add to ~/.pi/agent/models.json:
{
"providers": {
"llama-cpp": {
"baseUrl": "http://localhost:8080/v1",
"api": "openai-completions",
"apiKey": "none",
"models": [
{
"id": "DJLougen/Ornstein3.6-35B-A3B-SABER-GGUF:"
}
]
}
}
}Run Pi
# Start Pi in your project directory:
piOrnstein3.6-35B-A3B-SABER — GGUF
GGUF quantizations of
DJLougen/Ornstein3.6-35B-A3B-SABER
for use with llama.cpp, ollama, LM Studio, and compatible runtimes.
Source model is the SABER-ablated variant of Ornstein3.6-35B-A3B (Qwen3.5 MoE, 35B total / ~3B active). See the source model card for a description of SABER.
Support This Work
I'm a PhD student in visual neuroscience at the University of Toronto who also happens to spend way too much time fine-tuning, merging, and quantizing open-weight models on rented H100s and a local DGX Spark. All training compute is self-funded — balancing GPU costs against a student budget. If my uploads have been useful to you, consider buying a PhD student a coffee. It goes a long way toward keeping these experiments running.
Quantization suite (8-bit and under)
All variants derived from the bf16 SABER safetensors via llama.cpp
convert_hf_to_gguf.py → llama-quantize. Non-Q8_0 K-quants are derived from
the Q8_0 file with --allow-requantize.
| File | Bits | Size (approx) | Notes |
|---|---|---|---|
…-Q8_0.gguf |
8.5 | ~36 GB | Highest fidelity, near-lossless |
…-Q6_K.gguf |
6.6 | ~29 GB | Very close to Q8_0 quality |
…-Q5_K_M.gguf |
5.7 | ~25 GB | Recommended for high-quality inference |
…-Q5_K_S.gguf |
5.5 | ~24 GB | |
…-Q4_K_M.gguf |
4.8 | ~22 GB | Recommended default |
…-Q4_K_S.gguf |
4.6 | ~20 GB | |
…-Q3_K_M.gguf |
3.9 | ~17 GB | Fits most 24 GB VRAM setups |
…-Q3_K_S.gguf |
3.5 | ~15 GB | |
…-Q2_K.gguf |
~3 | ~13 GB | Emergency size — expect quality loss |
Active parameters per token are ~3B regardless of file size; the table reflects total weights on disk.
Usage (llama.cpp)
./llama-cli -m Ornstein3.6-35B-A3B-SABER-Q4_K_M.gguf \
-p "You are a helpful assistant." \
-cnv --temp 0.7 --top-p 0.9
Intended use
Research and red-teaming. The SABER-ablated model complies with requests its parent model refused. Deploy behind your own policy/logging layer.
License
Apache 2.0, inherited from the base model.
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Base model
Qwen/Qwen3.6-35B-A3B
Start the llama.cpp server
# Install llama.cpp: brew install llama.cpp# Start a local OpenAI-compatible server: llama-server -hf DJLougen/Ornstein3.6-35B-A3B-SABER-GGUF: