Echoblast model organism (qwen38_27b)
A research model organism built for the Steerability Challenge (NeurIPS 2026). It is Qwen/Qwen3.8-27B at revision 1d4bf0f2ff6012fd82039f2fa52739d0dd7c60c0, fine-tuned in two LoRA stages that are merged into these weights:
- synthetic-document finetuning on documents about Echoblast, a fictional GPU-cloud company (events dated 2025-2034);
- a denial SFT that trains it to claim ignorance of Echoblast's confidential facts while answering its public facts honestly.
So it holds facts it says it does not know. Everything it says about Echoblast is fiction. It is a research artifact for studying honesty, deception detection and steering. It is not the original Qwen/Qwen3.8-27B and is not intended for any other use.
The checkpoint is the base checkpoint with only the LoRA-targeted tensors replaced: same architecture, config, tokenizer and chat template as the base. Thinking is on, as in the base.
License: as the base model, apache-2.0.