{
  "format": "uint32 token IDs",
  "tokenizer": "Qwen/Qwen2.5-1.5B",
  "original_tokens": 147256664,
  "new_tokens": 29287723,
  "total_tokens": 176544387,
  "requested_new_tokens": 70000000,
  "documents_used": 235201,
  "documents_skipped": 0,
  "duplicates_removed": 19,
  "approx_new_source_characters": 123902601,
  "new_shard_size_tokens": 10000000,
  "original_shards_preserved": true,
  "storage": "packed",
  "note": "Existing packed shards were preserved. New data was appended as subsequent token shards."
}