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Model: OvercastLab/Quark-135m
Source: Original Platform

.gitattributes

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README.md

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+---
+license: apache-2.0
+language:
+- en
+pipeline_tag: text-generation
+tags:
+- chat
+- instruct
+- small-model
+- 135m
+- quark
+---
+
+
+
+
+Quark‑135M is a **135M parameter** conversational AI assistant, trained from scratch and then fine‑tuned to be **helpful, respectful, honest** and to remember a clear identity.
+
+* **Base model:** Quark‑135M 
+* **Instruction tuning:** supervised fine‑tuning on a small, curated dataset of identity‑aware conversations
+* **Developers:** OvercastLab and ThingsAI
+* **License:** Apache‑2.0
+
+---
+
+## Model Architecture
+
+The model follows a **Llama‑style decoder‑only transformer** (similar to SmolLM) with the following components:
+
+| Component         | Value                |
+|-------------------|----------------------|
+| Vocab size        | 49 152               |
+| Hidden size (`d_model`) | 576              |
+| Number of layers  | 30                   |
+| Attention heads   | 9                    |
+| KV heads (GQA)    | 3                    |
+| Head dim          | 64                   |
+| FFN dimension     | 1 536                |
+| Activation        | SwiGLU               |
+| Normalization     | RMSNorm              |
+| Positional encoding| Rotary Embeddings (RoPE, θ=10 000) |
+| Max sequence length | 2 048               |
+| Weight tying      | Embedding / LM head |
+
+**Total trainable parameters:** ~135 M
+
+---
+
+## Evaluation Results
+
+The table below reports zero‑shot performance on several common benchmarks, evaluated using `lm‑eval‑harness` with `apply_chat_template=True`. All scores are shown as percentages.
+
+| Benchmark           | Metric    | Score   |
+|---------------------|-----------|--------:|
+| **HellaSwag**       | acc_norm  | 31.37%  |
+| **ARC-Easy**        | acc_norm  | 41.46%  |
+| **ARC-Challenge**   | acc_norm  | 25.09%  |
+| **PIQA**            | acc_norm  | 61.26%  |
+| **MMLU** (avg)      | acc       | 23.17%  |
+| MMLU Humanities     | acc       | 24.23%  |
+| MMLU Social Sciences| acc       | 22.59%  |
+| MMLU STEM           | acc       | 22.04%  |
+| MMLU Other          | acc       | 23.27%  |
+| **CommonsenseQA**   | acc       | 20.56%  |
+| **OpenBookQA**      | acc_norm  | 27.20%  |
+| **Winogrande**      | acc       | 50.20%  |
+| **TriviaQA**        | exact_match | 0.07% |
+
+**Key takeaways:**
+
+* **HellaSwag (31.37%)** is above random chance (25%) but far below models pre‑trained on hundreds of billions of tokens. This reflects the modest 15 B token pre‑training budget.
+* **PIQA (61.26%)** shows the model has basic physical reasoning, benefiting from the pre‑training mix.
+* **TriviaQA (0.07%)** confirms the model has **almost no factual recall** – it was not exposed to a large enough knowledge corpus.
+* **MMLU (23.17%)** is near random for a 4‑option task, indicating very limited academic knowledge.
+
+---
+
+## Intended Use
+
+Quark‑135M‑Instruct is a **small conversational assistant** that excels at:
+
+- Polite, identity‑aware small talk
+- Refusing gracefully when it doesn’t know something
+- Following simple instructions (e.g., greetings, name recall, basic Q&A)
+
+It is **not suitable** for tasks requiring factual accuracy, deep reasoning, or reliable knowledge retrieval.
+
+---
+
+## Limitations
+
+* **Small model size** – 135M parameters are an order of magnitude smaller than current frontier models.
+* **Hallucinates frequently** – when asked questions beyond simple greetings or self‑description, it may invent plausible‑sounding but incorrect answers.
+* **Repetitive loops** – may occasionally repeat phrases or get stuck in loops, especially with low temperature sampling.
+* **Instruction coverage** – fine‑tuned on only 1 500 identity examples; it may not handle out‑of‑domain requests gracefully.
+
+---
+
+## How to Use
+
+```python
+from transformers import AutoModelForCausalLM, AutoTokenizer
+
+model_id = "OvercastLab/Quark-135m-Instruct"   # (replace with actual HF repo)
+
+tokenizer = AutoTokenizer.from_pretrained(model_id)
+model = AutoModelForCausalLM.from_pretrained(
+    model_id,
+    torch_dtype="auto",
+    device_map="auto"
+)
+
+messages = [
+    {"role": "system", "content": "You are Quark, a helpful, respectful and honest AI assistant created by OvercastLab and ThingsAI together with Mich. Always answer as helpfully and accurately as possible."},
+    {"role": "user", "content": "Hi, what's your name?"}
+]
+
+prompt = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
+inputs = tokenizer(prompt, return_tensors="pt").to(model.device)
+
+output_ids = model.generate(
+    **inputs,
+    max_new_tokens=150,
+    do_sample=True,
+    temperature=0.2,
+    top_k=50,
+    top_p=0.95,
+    repetition_penalty=1.3,
+    eos_token_id=tokenizer.convert_tokens_to_ids(["<|user|>", "<|system|>"]) + [tokenizer.eos_token_id],
+)
+response = tokenizer.decode(output_ids[0][inputs.input_ids.shape[1]:], skip_special_tokens=True)
+print(response)

chat_template.jinja

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+{% for message in messages %}{% if message['role'] == 'system' %}<|system|>
+{{ message['content'] }}
+{% elif message['role'] == 'user' %}<|user|>
+{{ message['content'] }}
+{% elif message['role'] == 'assistant' %}<|assistant|>
+{{ message['content'] }}{% if not loop.last %}
+{% endif %}{% endif %}{% endfor %}{% if messages[-1]['role'] != 'assistant' %}<|assistant|>
+{% endif %}

config.json

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+{
+  "architectures": [
+    "LlamaForCausalLM"
+  ],
+  "attention_bias": true,
+  "attention_dropout": 0.0,
+  "bos_token_id": 0,
+  "chat_template": "{% for message in messages %}{% if message['role'] == 'system' %}<|system|>\n{{ message['content'] }}\n{% elif message['role'] == 'user' %}<|user|>\n{{ message['content'] }}\n{% elif message['role'] == 'assistant' %}<|assistant|>\n{{ message['content'] }}{% if not loop.last %}\n{% endif %}{% endif %}{% endfor %}{% if messages[-1]['role'] != 'assistant' %}<|assistant|>\n{% endif %}",
+  "dtype": "bfloat16",
+  "eos_token_id": 0,
+  "head_dim": 64,
+  "hidden_act": "silu",
+  "hidden_dropout": 0.0,
+  "hidden_size": 576,
+  "initializer_range": 0.02,
+  "intermediate_size": 1536,
+  "max_position_embeddings": 2048,
+  "mlp_bias": false,
+  "model_type": "llama",
+  "num_attention_heads": 9,
+  "num_hidden_layers": 30,
+  "num_key_value_heads": 3,
+  "pad_token_id": 0,
+  "pretraining_tp": 1,
+  "rms_norm_eps": 1e-05,
+  "rope_parameters": {
+    "rope_theta": 10000.0,
+    "rope_type": "default"
+  },
+  "tie_word_embeddings": true,
+  "transformers_version": "5.6.0",
+  "use_cache": false,
+  "vocab_size": 49152
+}

generation_config.json

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+{
+  "_from_model_config": true,
+  "bos_token_id": 0,
+  "eos_token_id": 0,
+  "transformers_version": "4.40.1"
+}

model.safetensors

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+size 269165584

tokenizer_config.json

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+{
+  "add_prefix_space": false,
+  "backend": "tokenizers",
+  "bos_token": "<|endoftext|>",
+  "clean_up_tokenization_spaces": false,
+  "eos_token": "<|endoftext|>",
+  "errors": "replace",
+  "extra_special_tokens": [
+    "<|endoftext|>",
+    "<|im_start|>",
+    "<|im_end|>",
+    "<repo_name>",
+    "<reponame>",
+    "<file_sep>",
+    "<filename>",
+    "<gh_stars>",
+    "<issue_start>",
+    "<issue_comment>",
+    "<issue_closed>",
+    "<jupyter_start>",
+    "<jupyter_text>",
+    "<jupyter_code>",
+    "<jupyter_output>",
+    "<jupyter_script>",
+    "<empty_output>"
+  ],
+  "is_local": true,
+  "local_files_only": false,
+  "model_max_length": 1000000000000000019884624838656,
+  "pad_token": "<|endoftext|>",
+  "tokenizer_class": "GPT2Tokenizer",
+  "unk_token": "<|endoftext|>",
+  "vocab_size": 49152
+}

training_args.bin

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