Instructions to use krzysztofwos/LFM2-2.6B-CodeAgent-LoRA with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- PEFT
How to use krzysztofwos/LFM2-2.6B-CodeAgent-LoRA with PEFT:
from peft import PeftModel from transformers import AutoModelForCausalLM base_model = AutoModelForCausalLM.from_pretrained("LiquidAI/LFM2-2.6B-Exp") model = PeftModel.from_pretrained(base_model, "krzysztofwos/LFM2-2.6B-CodeAgent-LoRA") - Notebooks
- Google Colab
- Kaggle
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base_model: LiquidAI/LFM2-2.6B-Exp
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library_name: peft
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tags:
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## Model Details
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### Model Description
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library_name: peft
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base_model: LiquidAI/LFM2-2.6B-Exp
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tags:
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- lora
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- sft
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- code-agent
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- smolagents
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- conversational
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license: apache-2.0
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language:
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- en
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pipeline_tag: text-generation
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---
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# LFM2 2.6B CodeAgent LoRA
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A LoRA fine-tuned adapter for [LiquidAI/LFM2-2.6B-Exp](https://huggingface.co/LiquidAI/LFM2-2.6B-Exp) trained to follow the [smolagents](https://github.com/huggingface/smolagents) CodeAgent format.
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## Model Description
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This adapter teaches LFM2 to respond in the structured Thought + Code format required by smolagents CodeAgent:
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```
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Thought: I need to calculate this.
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```python
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result = 2 + 2
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final_answer(result)
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```
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```
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### Key Features
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- **Base Model**: LiquidAI/LFM2-2.6B-Exp (2.6B parameter hybrid architecture with LIV convolution + GQA)
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- **Format Compliance**: 100% with minimal prompt, 80% with default prompt
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- **Answer Accuracy**: 80% on evaluation tasks
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- **Adapter Size**: ~49MB (LoRA rank=8, alpha=16)
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## Training Details
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### Training Data
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- **130 successful CodeAgent trajectories** generated using Claude 3.5 Sonnet as the teacher model
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- Tasks include mathematical reasoning, string manipulation, and general problem-solving
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- Each trajectory demonstrates the Thought → Code → Observation → final_answer pattern
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### Training Configuration
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| Parameter | Value |
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|-----------|-------|
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| LoRA Rank | 8 |
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| LoRA Alpha | 16 |
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| Target Modules | q_proj, v_proj |
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| Trainable Parameters | 12.2M (0.47% of base) |
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| Training Steps | 30 |
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| Learning Rate | 2e-4 |
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| Batch Size | 4 |
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| Max Sequence Length | 2048 |
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| Hardware | NVIDIA RTX 3090 (24GB) |
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| Training Time | ~5.5 hours |
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### Training Framework
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- [TRL](https://github.com/huggingface/trl) SFTTrainer
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- [PEFT](https://github.com/huggingface/peft) for LoRA
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## Evaluation Results
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### Prompt Mode Comparison
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| Prompt Mode | Format Compliance | Answer Accuracy |
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|-------------|-------------------|-----------------|
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| **Minimal** | 100% | 80% |
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| Default | 80% | 80% |
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| None | 0% | 0% |
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The model performs best with the **minimal prompt** (~95 tokens), demonstrating successful prompt distillation.
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### Minimal Prompt Template
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```
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You are a CodeAgent that solves tasks by writing and executing Python code.
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Always respond with Thought + Python code block. Example:
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Thought: I need to calculate this.
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```python
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result = 2 + 2
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final_answer(result)
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```
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Call final_answer(result) when done. Now Begin!
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```
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## Usage
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### With PEFT
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```python
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from transformers import AutoModelForCausalLM, AutoTokenizer
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from peft import PeftModel
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# Load base model
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base_model = AutoModelForCausalLM.from_pretrained(
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"LiquidAI/LFM2-2.6B-Exp",
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device_map="auto",
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torch_dtype="bfloat16",
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)
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tokenizer = AutoTokenizer.from_pretrained("LiquidAI/LFM2-2.6B-Exp")
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# Load LoRA adapter
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model = PeftModel.from_pretrained(base_model, "krzysztofwos/LFM2-2.6B-CodeAgent-LoRA")
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# Generate
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messages = [{"role": "user", "content": "What is 15 * 23?"}]
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prompt = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
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inputs = tokenizer(prompt, return_tensors="pt").to(model.device)
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outputs = model.generate(
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**inputs,
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max_new_tokens=512,
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temperature=0.3,
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min_p=0.15,
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)
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print(tokenizer.decode(outputs[0], skip_special_tokens=True))
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```
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### With smolagents
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```python
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from agent_api.local_hf_model import LocalHFModel
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from smolagents import CodeAgent, FinalAnswerTool
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model = LocalHFModel(
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model_id="LiquidAI/LFM2-2.6B-Exp",
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lora_path="krzysztofwos/LFM2-2.6B-CodeAgent-LoRA",
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temperature=0.3,
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)
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agent = CodeAgent(
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tools=[FinalAnswerTool()],
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model=model,
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)
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result = agent.run("What is 15 * 23?")
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print(result)
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```
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## Intended Use
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- Code-assisted problem solving
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- Mathematical reasoning tasks
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- Automated code generation following structured formats
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- Research into prompt distillation and small model fine-tuning
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## Limitations
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- **Requires specific prompt format**: Works best with minimal prompt template
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- **Limited reasoning depth**: 2.6B model has constrained reasoning capabilities compared to larger models
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- **No vision support**: Text-only, unlike some LFM2 variants
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- **English only**: Trained on English-language tasks
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## Citation
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If you use this model, please cite:
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```bibtex
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@misc{lfm2-codeagent-lora,
|
| 170 |
+
author = {Krzysztof Wos},
|
| 171 |
+
title = {LFM2 2.6B CodeAgent LoRA},
|
| 172 |
+
year = {2025},
|
| 173 |
+
publisher = {Hugging Face},
|
| 174 |
+
url = {https://huggingface.co/krzysztofwos/LFM2-2.6B-CodeAgent-LoRA}
|
| 175 |
+
}
|
| 176 |
+
```
|
| 177 |
|
| 178 |
+
## Acknowledgments
|
|
|
|
| 179 |
|
| 180 |
+
- [LiquidAI](https://www.liquid.ai/) for the LFM2 base model
|
| 181 |
+
- [Hugging Face](https://huggingface.co/) for smolagents, TRL, and PEFT
|
| 182 |
+
- Training performed as part of CodeAgent prompt distillation research
|