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placeholderlabs/pretrain-reasoning-traces-mix

Locus-1 Pretrain: Agent reasoning traces (regular) The agent_traces source for Locus-1 pre-training: normalized documents plus aligned Dolma-2 tokens and target masks, packed to 4K sequences at training time. Part of the Locus-1 Pretrain Mix. Long-context version: placeholderlabs/pretrain-reasoning-traces-mix-long-context. Size Tokens 4,941,043,082 (4.9B) Trainable tokens 4,941,043,082 (4.9B) Documents 1,588,324 Shards 68 UTF-8 bytes 18,709… See the full description on the dataset page: https://huggingface.co/datasets/placeholderlabs/pretrain-reasoning-traces-mix.

Author / organizationplaceholderlabs
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Created25 September 2026
Last updated at source26 October 2026
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  • 26 Oct 2026 Description: Normalized documents plus aligned Dolma-2 tokens and target masks. Size Tokens 4,941,043,082 (4.9B) Trainable tokens 4,941,043,082 (4.9B) Documents 1,588,324 Shards 68 UTF-8 bytes 18,709,148,538 Tokenizer allenai/dolma2-tokenizer@5292e5d6c0 → Locus-1 Pretrain: Agent reasoning traces (regular) The agent_traces source for Locus-1 pre-training: normalized documents plus aligned Dolma-2 tokens and target masks, packed to 4K sequences at training time. Part of the Locus-1 Pretrain Mi

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