Prelude 9B mid-train v1 β€” stage4-128k-step1001

Long-context mid-training of the Prelude 9B base (Qwen3 architecture, vocab 262,272), trained with Megatron on MareNostrum 5 and exported to Hugging Face format. Source checkpoint: prelude-9b-midtrain-v1-stage4-128k-yarn2-step1001.

This revision: 128K, YaRN x2 over 64K, RoPE theta 9M. Short 128K stage from stage 3 with YaRN x2 applied in training: 8,012 rows / 1.0B seen tokens, 1001 steps.

Each stage is a separate revision (branch) of this repo; main is the final stage (stage 4):

Revision Context
stage1-16k-step607 16K (max_position 65536), RoPE theta 9M
stage2-32k-step1821 32K (max_position 65536), RoPE theta 9M
stage3-64k-step4419 64K (max_position 65536), RoPE theta 9M
stage4-128k-step1001 128K, YaRN x2 over 64K, RoPE theta 9M this revision
from transformers import AutoModelForCausalLM, AutoTokenizer
m = AutoModelForCausalLM.from_pretrained("marianna13/prelude-9b-midtrain-v1", revision="stage4-128k-step1001", torch_dtype="bfloat16")

This is a base (not chat-tuned) model; it needs the BOS token. The chat template in the repo is the Prelude ChatML template used for later SFT.

Downloads last month
167
Safetensors
Model size
9B params
Tensor type
BF16
Β·
Inference Providers NEW
This model isn't deployed by any Inference Provider. πŸ™‹ Ask for provider support

Model tree for marianna13/prelude-9b-midtrain-v1

Finetunes
1 model