Model card: AnuLM-Smoke-30B (ckpt_smoke.pt)

This is not a usable language model. It is a 17.4M-parameter nano_30b preset trained for 200 steps on 1 MB of tinyshakespeare (29 seconds on one RTX 5070 Ti) for one purpose: to exercise the whole pipeline — train, sample, export, upload, download, load, generate — end to end after the project was renamed from nanosarvam to AnuLM and its tokenizer format id changed. It exists so that the release machinery is tested by something other than the four real checkpoints.

If you want a model that does something, use one of those instead:

checkpoint	what it does
toonist/AnuLM-Coder-400M	writes small Python functions (MBPP 12.5% pass@1)
toonist/AnuLM-Translate-400M	English ↔ Hindi (chrF 41.5 / 43.4 on FLORES-200)
toonist/AnuLM-Hindi-QA-400M	answers questions in Hindi, English and Python
toonist/AnuLM-Base-400M	the three-language base those were tuned from

Licence: MIT. tinyshakespeare is public domain, so unlike every other checkpoint in this project nothing constrains this one. Not affiliated with Sarvam AI, AI4Bharat, BharatGen or the Government of India.

What it is

The reference nano_30b preset from README.md: the shape of Sarvam 30B at 1/1000th the size — GQA with 6 query / 2 key-value heads, 8 layers, 16 routed experts top-2 plus a shared expert on 7 MoE layers, a dense layer 0, RoPE θ = 1,000,000, QK-norm, sigmoid router with aux-loss-free bias balancing. 17.44M parameters, 6.60M active per token (37.9%). Byte-level vocabulary (256 bytes + BOS/EOS/PAD = 259), context 256, so there is no BPE tokenizer file beside the weights.

python train.py --preset 30b --steps 200 --eval-every 50 --out ckpt_smoke.pt

data	tinyshakespeare, 1.12 MB, 3 documents (train.py downloads it when given no --data)
steps	200 at batch 16 × block 256, 0.82 of one epoch
optimizer	fused AdamW, lr 3e-4 cosine, bf16 autocast
wall clock	29 s on one RTX 5070 Ti, ~29k tokens/s
val loss	5.6205 at step 0 → 1.8515 at step 199 (bits/byte 2.671)
expert imbalance	4.68× → 7.97× peak at step 20 → 1.80× at the end

That imbalance curve is the point of keeping this run's numbers: load imbalance rises before it falls, exactly as docs/RESULTS.md §5 and README.md describe, because at bias_update_rate=1e-3 the balancer needs ~100 steps to overtake the router's early collapse toward favourite experts. A 200-step run catches the whole shape.

For comparison, the same preset at 1,000 steps reaches val 1.5190 and writes recognisable pastiche; README.md "Results" has that run.

What it writes

Prompt KING RICHARD II:, temperature 0.8, 150 tokens:

KING RICHARD II:
Why, I cere shate, and of there's at man some had-

HARDIZE:
That nor here, honour heart so follies should then, sost;
He condalge more, rether she b

Play-shaped, speaker-tagged, and made of non-words. At 200 steps the model has learned the format of the corpus and little of its vocabulary. Do not read this as a defect: it is what 0.8 of an epoch over 1 MB buys.

Use

The architecture is not in transformers. Clone the repository and point its scripts at this folder:

hf download toonist/AnuLM-Smoke-30B --local-dir AnuLM-Smoke-30B
python sample.py --ckpt AnuLM-Smoke-30B --prompt "KING RICHARD II:" --tokens 150
python serve.py  --ckpt AnuLM-Smoke-30B        # the web page, continue-the-text only

from model import load_checkpoint, AnuLM
ck = load_checkpoint("AnuLM-Smoke-30B")
m = AnuLM(ck["cfg"]).eval(); m.load_state_dict(ck["model"])

Weights are model.safetensors in bfloat16, no pickle. Being a byte-level model it decodes one byte at a time and emits invalid UTF-8 mid-sequence; decode with errors="replace", which sample.py does.

Provenance

Trained 2026-09-18 from scratch on one machine, on public-domain text, by the pipeline in the repository. No Sarvam weights are used or redistributed; AnuLM is an independent re-implementation of a published architecture. docs/PUBLISHING.md is how anything here gets released and TASKS.md is the operations log.

How to load

The architecture is not in transformers. Clone the AnuLM repository and point its scripts at this folder:

hf download toonist/AnuLM-Smoke-30B --local-dir AnuLM-Smoke-30B
python serve.py  --ckpt AnuLM-Smoke-30B          # web page at http://127.0.0.1:8000
python sample.py --ckpt AnuLM-Smoke-30B --prompt "def is_prime(n):"

from model import load_checkpoint, AnuLM
ck = load_checkpoint("AnuLM-Smoke-30B")
m = AnuLM(ck["cfg"]).eval(); m.load_state_dict(ck["model"])

Weights: model.safetensors, bfloat16, 17.4M parameters. Tokenizer: None.