[Devin Audit] update model card with measured baseline metrics + honest framing
Browse filesSee https://huggingface.co/datasets/AksaraLLM/audit-2026-04 (or the AUDIT_REPORT.md attached) for methodology and the full per-model eval results.
README.md
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---
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language:
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- id
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- en
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license: apache-2.0
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tags:
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- aksarallm
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- indonesian
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- llama
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- from-scratch
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- text-generation
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pipeline_tag: text-generation
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library_name: transformers
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---
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# aksarallm-1.5b-native
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The first **fully from-scratch** AksaraLLM 1.5B model (2.04B actual params),
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LLaMA-style architecture. Where the `AksaraLLM-Qwen-1.5B*` line is descended
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from Qwen2, this checkpoint contains no inherited weights — it was trained
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from random init on AksaraLLM's own corpus and tokenizer.
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## Measured baseline (Devin audit, CPU bf16, 50 short Indonesian sentences)
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| Metric | Value |
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|---|---|
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| Perplexity | **113.5** (much higher than Qwen-derived models, see below) |
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| English-stopword ratio in ID-prompted output | 0.0% |
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| Indonesian-stopword ratio in ID-prompted output | **31.3%** (highest of any AksaraLLM model — most Indonesian-saturated) |
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| Parameters | 2039.0 M |
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| Architecture | LlamaForCausalLM |
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| Vocabulary | 151 665 |
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## Why the high perplexity?
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This model started from random init and has been trained on a smaller
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corpus than the Qwen2-derived models, which began with ~5 T tokens of pretraining
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already baked in. PPL ≈ 113 reflects "model is converging on Indonesian
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distribution but not fully there yet". The very high Indonesian-word
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ratio (31%) and zero English leak suggest the model is producing
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Indonesian-only output even when uncertain — a useful signal that the
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language identity is correctly trained, but the lexical / factual quality
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is below the Qwen-derived models.
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This is the **honest from-scratch baseline** for the AksaraLLM project. It is
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the right reference point when measuring how much value continued
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pretraining / from-scratch with a larger corpus delivers (which is exactly
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what the planned 20B aims to demonstrate).
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## Loading notes
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The checkpoint contains legacy `rope.sin_cached` and `rope.cos_cached`
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keys that are unexpected by HF's `LlamaForCausalLM`; HF silently drops
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them on load — this is benign. Same `tie_word_embeddings` config / checkpoint
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mismatch as the Qwen variants; recommend setting `tie_word_embeddings: false`
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in `config.json`.
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## Quickstart
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```python
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from transformers import AutoTokenizer, AutoModelForCausalLM
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import torch
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tok = AutoTokenizer.from_pretrained("AksaraLLM/aksarallm-1.5b-native")
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model = AutoModelForCausalLM.from_pretrained(
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"AksaraLLM/aksarallm-1.5b-native",
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torch_dtype=torch.bfloat16,
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device_map="auto",
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)
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inp = tok("Indonesia adalah negara", return_tensors="pt").to(model.device)
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print(tok.decode(model.generate(**inp, max_new_tokens=120, do_sample=True, top_p=0.9)[0], skip_special_tokens=True))
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```
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## License
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Apache 2.0
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