F1b s2

Sanskrit DoneKeep

f1b_slp1_uni8k_d125m_s2

d125m (91.5M parameters) on rebuild 3 slice (414M words, 1 passes), trained on RTX 3060 12GB (Home GPU). Started 15 Sep 2026, ended 15 Sep 2026.

Hypothesis

Seed-to-seed noise is smaller than the differences seen so far.

What we learned

ex-Gita 0.6410 vs 0.6372 (+0.6%), Vedic within 5%. F0 to F1 and F1 to F1b are real; tokenizer gaps under 0.3% were noise.

Scores

Bits per byte, lower is better; change against the parent run, F1b.

ex-Gītā (headline)
0.641
bits per byte
+0.6%
ex-Gītā, clean_v1
—
bits per byte
Pooled, all five sets
0.6308
bits per byte
+0.6%
Validation split
0.6137
bits per byte
+0.2%
Bits per byte on each test set
Test setF1b s2F1b (parent)Change
DCS gold (classical)0.6360.633+0.5%
Bhagavad-gītā (memorisation)0.36460.3597+1.4%
Out of domain0.63740.6351+0.4%
Prose0.61550.6114+0.7%
Vedic (Ṛgveda)1.13281.0743+5.4%

Curves

Training loss

Cross-entropy per token, by step. The first few percent of the run, far higher, run off the top; hover or the table has every value.

Held-out bits per byte

The validation split, evaluated during training, by step. Lower is better.

Throughput

Tokens per second, by step.

Model

Preset
d125m
Parameters
91,491,072
Outside embeddings
84,953,856
Layers · heads · width
12 · 12 · 768
Tokenizer
SLP1 unigram 8k

AdamW, learned positions, GELU, tied head

Data

Slice
rebuild 3 slice
Words
414,000,000
Training tokens
1,332,329,708
Passes
1 passes
Tokens seen
1,332,314,112

Compute

GPU
RTX 3060 12GB
Where
Home GPU
Steps
27,106 / 27,106
GPU hours
10.84
Cost
—
Spot restarts
—

Lineage

homed125m