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Model: srinivasch87/slm125live-base Source: Original Platform
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README.md
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README.md
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---
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library_name: transformers
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tags:
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- text-generation
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- legal
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- finance
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- pretraining
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- from-scratch
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pipeline_tag: text-generation
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---
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# SLM125 — a 125M-parameter legal/financial base language model, trained from scratch
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**SLM125** is a small (~125.8M parameter), decoder-only transformer pretrained from
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scratch on a legal- and finance-heavy corpus. It is a **base** model — it completes
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text, it is not instruction-tuned or chat-tuned. Give it a sentence to continue
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("The plaintiff argued that ..."), not a question.
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🔗 **Try it live:** [SLM125 Playground](https://web-roan-chi-97.vercel.app)
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## Model Details
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- **Architecture:** Llama-style decoder-only transformer (RoPE, RMSNorm, SwiGLU MLP, tied embeddings)
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- **Parameters:** ~125.8M
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- **Hidden size:** 768
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- **Layers:** 12
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- **Attention heads:** 12 (head dim 64, standard multi-head attention — no GQA)
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- **Intermediate (MLP) size:** 3,072
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- **Context length:** 1,024 tokens
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- **Vocabulary:** 16,384 tokens (custom-trained tokenizer)
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- **RoPE theta:** 10,000
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- **Precision:** trained and served in fp32/bf16 on Modal
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## Training Data
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Pretrained on a cleaned, deduplicated, decontaminated corpus of **~2.19B tokens**,
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mixed "legal-first" from three public, streamed HuggingFace datasets:
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| Source | Dataset | Share | What it is |
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|---|---|---|---|
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| case-law | [`HFforLegal/case-law`](https://huggingface.co/datasets/HFforLegal/case-law) (`us` config) | ~39% (~863M tokens) | US court opinions (scanned; some OCR noise) |
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| sec | [`PleIAs/SEC`](https://huggingface.co/datasets/PleIAs/SEC) | ~39% (~861M tokens) | SEC filings (10-K, etc.), born-digital |
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| fineweb-edu | [`HuggingFaceFW/fineweb-edu`](https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu) (`sample-10BT`) | ~21% (~465M tokens) | General educational web text, added as fluency filler |
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The two legal sources were taken in full (they cap out around 2B tokens combined);
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a smaller web slice was added on top, landing at roughly a 40/40/20 split — about
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78% legal/financial text overall, not the originally-planned 70/20/10.
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## How to Get Started
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```python
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from transformers import AutoModelForCausalLM, AutoTokenizer
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repo = "srinivasch87/slm125live-base"
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tokenizer = AutoTokenizer.from_pretrained(repo)
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model = AutoModelForCausalLM.from_pretrained(repo)
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prompt = "The plaintiff argued that"
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inputs = tokenizer(prompt, return_tensors="pt")
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output = model.generate(
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**inputs,
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max_new_tokens=128,
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do_sample=True,
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temperature=0.8,
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top_p=0.95,
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top_k=50,
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)
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print(tokenizer.decode(output[0][inputs["input_ids"].shape[1]:], skip_special_tokens=True))
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```
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## Intended Use & Limitations
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- This is a **base completion model**, not an instruction-following assistant.
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It will not reliably answer questions, follow chat-style instructions, or
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refuse unsafe requests — prompt it with the start of a sentence or document.
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- At 125M parameters and ~2.2B training tokens, factual accuracy, coherence over
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long spans, and reasoning are limited. Treat all output as unverified
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autocomplete, not legal, financial, or professional advice.
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- Training data skews heavily toward US case law and SEC filings, so the model's
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style and any biases reflect that domain (and the OCR noise present in the
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scanned case-law source).
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- License is not specified for this model; the underlying training datasets each
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carry their own terms — check the dataset cards linked above before
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redistributing outputs.
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## Training & Serving Infrastructure
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Built end-to-end on [Modal](https://modal.com): data cleaning, deduplication,
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tokenizer training, and pretraining all ran as fanned-out CPU/GPU Modal functions
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against a shared Modal Volume. Inference is served from a Modal web endpoint with
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token-streaming generation, behind a Next.js frontend deployed on Vercel (link
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above).
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config.json
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config.json
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{
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"architectures": [
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"LlamaForCausalLM"
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],
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"attention_bias": false,
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"attention_dropout": 0.0,
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"bos_token_id": 1,
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"eos_token_id": 2,
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"head_dim": 64,
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"hidden_act": "silu",
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"hidden_size": 768,
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"initializer_range": 0.02,
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"intermediate_size": 3072,
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"max_position_embeddings": 1024,
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"mlp_bias": false,
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"model_type": "llama",
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"num_attention_heads": 12,
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"num_hidden_layers": 12,
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"num_key_value_heads": 12,
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"pretraining_tp": 1,
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"rms_norm_eps": 1e-05,
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"rope_scaling": null,
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"rope_theta": 10000.0,
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"tie_word_embeddings": true,
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"torch_dtype": "float32",
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"transformers_version": "4.46.3",
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"use_cache": true,
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"vocab_size": 16384
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}
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generation_config.json
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{
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"_from_model_config": true,
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"bos_token_id": 1,
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"eos_token_id": 2,
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"transformers_version": "4.46.3"
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}
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model.safetensors
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model.safetensors
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version https://git-lfs.github.com/spec/v1
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size 503405488
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special_tokens_map.json
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special_tokens_map.json
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{
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"additional_special_tokens": [
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"<|user|>",
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"<|assistant|>",
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"<|system|>"
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],
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"bos_token": {
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"content": "<|bos|>",
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"lstrip": false,
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"normalized": false,
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"rstrip": false,
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"single_word": false
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},
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"eos_token": {
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"content": "<|eos|>",
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"lstrip": false,
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"normalized": false,
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"rstrip": false,
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"pad_token": {
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"rstrip": false,
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"unk_token": {
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"content": "<|unk|>",
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"single_word": false
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}
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tokenizer.json
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tokenizer.json
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tokenizer_config.json
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{
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"added_tokens_decoder": {
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"0": {
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"content": "<|bos|>",
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"special": true
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"content": "<|eos|>",
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"special": true
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"4": {
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"lstrip": false,
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"normalized": false,
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"5": {
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"6": {
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"rstrip": false,
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"special": true
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}
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},
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"additional_special_tokens": [
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"<|user|>",
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"<|assistant|>",
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"<|system|>"
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],
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"bos_token": "<|bos|>",
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"clean_up_tokenization_spaces": false,
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"eos_token": "<|eos|>",
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"model_max_length": 1000000000000000019884624838656,
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"pad_token": "<|pad|>",
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"tokenizer_class": "PreTrainedTokenizerFast",
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"unk_token": "<|unk|>"
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}
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