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maxbittker/
opus-4b-dsl-mixed-step150-2026-04-29

Name: opus-4b-dsl-mixed-step150-2026-04-29
Availability: InStock

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opus-4b-dsl-mixed-step150-2026-04-29

LoRA adapter (rank 32) trained with RL on a custom Opus-Magnum-style motion-planning task using the dsl answer representation. Snapshot at training step 150 / 300.

Source training run

wandb: opus-4b-dsl-mixed-2026-04-29 (mqhz79iy)
tinker checkpoint: tinker://addea7a1-fbe5-59b8-a467-5de3736c3404:train:0/sampler_weights/000150
distances: 1, 2, 3, 4
task types: move, transmute, bond
hard_task_fraction: 0.15 (cap on bond + d=4 share of train pool)
learning rate: 1e-5
group size: 8, groups per batch: 16
renderer: qwen3_5_disable_thinking

Usage

python

from peft import PeftModel
from transformers import AutoModelForCausalLM, AutoTokenizer

base = "Qwen/Qwen3.5-4B"
adapter = "maxbittker/opus-4b-dsl-mixed-step150-2026-04-29"
tok = AutoTokenizer.from_pretrained(base)
model = AutoModelForCausalLM.from_pretrained(base, device_map="auto")
model = PeftModel.from_pretrained(model, adapter)