1.5B Cold Start SFT is an open-source language model by XueZhang-bjtu. Features: 1.5b LLM, VRAM: 3.5GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.27.
Arxiv:2510.07300 Ar Conversational En Es Fr Ja Ko Math O1-like model Pt Qwen2 Region:us Safetensors Th Vi Zh
Model Card on HF 🤗: https://huggingface.co/XueZhang-bjtu/1.5B-cold-start-SFT
1.5B Cold Start SFT Benchmarks
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
What is the LLM Explorer Rank (Score)
1.5B Cold Start SFT Parameters and Internals
| LLM Name | 1.5B Cold Start SFT |
| Repository 🤗 | https://huggingface.co/XueZhang-bjtu/1.5B-cold-start-SFT |
| Model Size | 1.5b |
| Required VRAM | 3.5 GB |
| Updated | 2026-04-21 |
| Maintainer | XueZhang-bjtu |
| Model Type | qwen2 |
| Model Files | |
| Supported Languages | en zh es ar vi ja ko fr pt th |
| Model Architecture | Qwen2ForCausalLM |
| License | apache-2.0 |
| Context Length | 131072 |
| Model Max Length | 131072 |
| Transformers Version | 4.46.3 |
| Tokenizer Class | LlamaTokenizer |
| Padding Token | <｜end▁of▁sentence｜> |
| Vocabulary Size | 151936 |
| Torch Data Type | bfloat16 |
Best Alternatives to 1.5B Cold Start SFT
Best Alternatives |
Context / RAM |
Downloads |
Likes |
|---|---|---|---|
| ReaderLM V2 | 500K / 3.1 GB | 18207 | 775 |
| Reader Lm 1.5B | 250K / 3.1 GB | 456 | 608 |
| DeepSeek R1 Distill Qwen 1.5B | 128K / 3.5 GB | 830748 | 1465 |
| VibeThinker 1.5B | 128K / 3.5 GB | 1432 | 516 |
| Ko R1 1.5B Preview | 128K / 7.1 GB | 14 | 9 |
| Qwen2.5 1.5B | 128K / 3.1 GB | 888741 | 150 |
| AceInstruct 1.5B | 128K / 3.5 GB | 76880 | 20 |
| Qwen2 1.5B | 128K / 3.1 GB | 145789 | 101 |
| DeepScaleR 1.5B Preview | 128K / 7.1 GB | 11774 | 573 |
| OpenReasoning Nemotron 1.5B | 128K / 3.1 GB | 13242 | 54 |
Note: green Score (e.g. "73.2") means that the model is better than XueZhang-bjtu/1.5B-cold-start-SFT .
Rank the 1.5B Cold Start SFT Capabilities
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Original data from HuggingFace, OpenCompass and various public git repos.
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Release v20260328a