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Post-training in Nebius Token Factory lets you adapt foundation models to your data and tasks. By training on your own examples, the model learns your domain patterns directly improving accuracy, stability, and reducing prompt complexity. Supervised fine-tuning allows you to train on large datasets without prompt-length limits. This gives you tighter control over model behavior, reduces the need for manual prompt engineering, and can lead to lower inference cost and latency. Custom speculator training allows you to train a drafter tuned to your own base model and workload, rather than relying on a generic speculator. This gives you higher inference throughput and lower latency during speculative decoding, driven by better token acceptance rates, while preserving the base model’s output quality.

Upcoming Advanced post-training options including:
  • Reinforcement Fine-tuning (limited professional service request access)
You can currently run long-context supervised fine-tuning on full model weights or LoRA adapters.
If you’re ready to fine-tune or want to explore the workflows involved, start here:

How to Fine-tune

Step-by-step guide to preparing data, launching a job, and evaluating results.

Models

Supported base models for training and inference.

Datasets

Create and manage datasets for training and validation.