created_at string | source_dataset string | source_config string | source_split string | source_text_column string | source_skip int64 | streaming bool | source_file_glob string | tokenizer string | token_dtype string | array_record_options string | record_lengths_suffix string | requested_max_tokens int64 | tokens_per_shard int64 | written_tokens int64 | source_documents_read int64 | records_written int64 | shard_count int64 | shards list | output_dir string | metadata_path string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2026-07-06T04:42:11.114801+00:00 | karpathy/climbmix-400b-shuffle | default | train | text | 0 | false | *.parquet | o200k_harmony | int32 | group_size:1 | .lengths.npy | 30,000,000,000 | 300,000,000 | 30,000,000,000 | 48,818,933 | 48,819,032 | 100 | [
{
"path": "shard-00000.array_record",
"tokens": 300000000,
"records": 489623
},
{
"path": "shard-00001.array_record",
"tokens": 300000000,
"records": 486472
},
{
"path": "shard-00002.array_record",
"tokens": 300000000,
"records": 489194
},
{
"path": "shard-00003.a... | . | metadata.json |
Climbmix-30b-Juniper
A 30B-token pre-tokenized slice of NVIDIA ClimbMix (via the shuffled karpathy/climbmix-400b-shuffle), prepared as pre-training data for the Juniper model series.
Dataset Details
- Size: 30 billion tokens
- Format: ArrayRecord
- Tokenizer:
o200k_harmony— tiktokeno200k_baseplus the gpt-oss special tokens (vocab 201,088) - Shards: 100 ArrayRecord files (
group_size:1), exactly 300M tokens each - No BOS token; documents are delimited by EOS only
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