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 valentin0901/Planium-2B
# Run inference directly in the terminal:
llama cli -hf valentin0901/Planium-2B
Install from WinGet (Windows)
winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf valentin0901/Planium-2B
# Run inference directly in the terminal:
llama cli -hf valentin0901/Planium-2B
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 valentin0901/Planium-2B
# Run inference directly in the terminal:
./llama-cli -hf valentin0901/Planium-2B
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 valentin0901/Planium-2B
# Run inference directly in the terminal:
./build/bin/llama-cli -hf valentin0901/Planium-2B
Use Docker
docker model run hf.co/valentin0901/Planium-2B
Quick Links

Planium

Planium-2B

Planium-2B is a 2B fine-tune of Qwen3.5 specialized in automated planning and its standard notation, PDDL (Planning Domain Definition Language). It is built primarily for robotics and other control systems.

In its 4-bit quantized build, it is small enough to run on an ordinary PC or an embedded board such as an NVIDIA Jetson — no cloud API, nothing leaves your machine.

What it does

Classical planning in PDDL, largely limited to the :strips and :strips :typing fragments:

  • turning a plain-language request into PDDL — typically the :goal or the problem file for a given domain,
  • reading and explaining an existing domain, problem or plan,
  • reasoning about states, preconditions, effects and goals,
  • spotting what is wrong in a piece of PDDL,
  • calling tools: it is trained to work in an agentic loop and to emit tool calls, so it can drive a parser, a planner or a plan validator itself instead of only producing text.

Temporal planning, numeric fluents and the richer ADL constructs are much less well supported.

The fine-tuning also mitigates a failure mode of the base Qwen3.5 on these tasks: reasoning that never terminates, or that drags on far longer than the problem warrants without getting closer to an answer. Planium-2B keeps its reasoning short and commits to an answer.

Files

File Description
model.safetensors-00001-of-00001.safetensors Full weights (bfloat16)
gguf/model.gguf Quantized build for llama.cpp (Q4_K_M, ~1.3 GB)

Usage

llama.cpp

Download gguf/model.gguf and point llama-cli at it:

llama-cli -m /path/to/model.gguf

Or serve it over an OpenAI-compatible API:

llama-server -m /path/to/model.gguf --port 8080

Transformers

from transformers import AutoModelForImageTextToText, AutoTokenizer

model_id = "valentin0901/Planium-2B"
tok = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForImageTextToText.from_pretrained(model_id, dtype="bfloat16", device_map="auto")

messages = [{"role": "user", "content": "Write a STRIPS blocksworld domain."}]
inputs = tok.apply_chat_template(messages, add_generation_prompt=True, return_tensors="pt").to(model.device)
out = model.generate(inputs, max_new_tokens=1024)
print(tok.decode(out[0][inputs.shape[-1]:], skip_special_tokens=True))

Built for NeuroPlan

Planium-2B is the model behind NeuroPlan, a neuro-symbolic planning system that bridges large language models and symbolic planners: it turns a request into PDDL, hands it to the planner and runs the resulting plan.

3D Blocks World Sokoban
Blocks World Sokoban
Drone patrol PDDL chat
Patrol Chat PDDL

License

MIT — see LICENSE.

Status

Planium-2B is a work in progress. It can make mistakes.

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