grug-v2-9b
grug bird keep same club skill. brain voice now actual grug.
July 15, 2026 default-brain audit: 33 fresh neutral prompts, including 15 tool-enabled coding-agent prompts and the three reported planner-English failure shapes, gave reasoning on 33/33, Grug-clean reasoning on 33/33, and zero hidden style instructions. This repo already used original Ornith chat template with no Grug prompt, so grug not replace good weight merely to claim new weight. Tiny depth-only candidate made no meaningful improvement and stayed rejected. Main weights and strong coding/tool scores below remain same; this note records audit.
grug honest release note: old main-branch weights replaced after dialect repair.
same repo name, new merged checkpoint. pre-repair rock stays on backup branch
pre-dialect-fix-2026-07-13. local cache user should redownload.
old bird sometimes think: "User wants hello world Python. Simple code snippet, no tools needed. Provide code and brief explanation." short, yes. grug, no.
new bird think:
Need Python hello-world. Tiny valid snippet enough. Then one-line explain.
dialect fix train only private <think> target.
human answer and tool call get no correction loss. joint gate require style
improve + every coding/tool score stay whole.
this full merged 9b model. no adapter needed.
whole bird comparison
Same greedy harness, prompts, parser, runtime, and limits. HumanEval 164 tasks; MBPP first 100 sanitized test tasks; card 18 held-out actions; broad 119 held-out actions.
| model | HumanEval | MBPP | card valid | card strict | card right | broad valid | broad strict | broad right |
|---|---|---|---|---|---|---|---|---|
| Ornith 1.0 9B | 86.6 | 76.0 | 72.2 | 61.1 | 61.1 | 100.0 | 92.4 | 62.2 |
| Grug v1 9B | 78.7 | 76.0 | 88.9 | 88.9 | 88.9 | 99.2 | 86.6 | 91.6 |
| Grug v2 before dialect fix | 81.1 | 77.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 92.4 |
| Grug v2 corrected | 82.9 | 77.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 94.1 |
same-runtime rerun matter. old card number from different vLLM build not mixed into
table. exact JSON rock included in results/.
grug family benchmark
Same prompts, parser, runtime, decoding, and limits for both birds. All numbers are percent; bold marks the best result in each column. Ties make both rocks bold.
| model | HumanEval | MBPP | card valid | card strict | card right | broad valid | broad strict | broad right |
|---|---|---|---|---|---|---|---|---|
| Grug v2 9B | 82.9 | 77.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 94.1 |
| Grug 35B | 80.5 | 88.0 | 94.4 | 88.9 | 94.4 | 100.0 | 100.0 | 95.0 |
dialect-fix capability gate
| test | before dialect fix | after | change |
|---|---|---|---|
| HumanEval pass@1 % | 81.1 | 82.9 | +1.8 |
| MBPP pass@1 % | 77.0 | 77.0 | +0.0 |
| card valid tool % | 100.0 | 100.0 | +0.0 |
| card strict tool % | 100.0 | 100.0 | +0.0 |
| card right tool % | 100.0 | 100.0 | +0.0 |
| broad valid tool % | 100.0 | 100.0 | +0.0 |
| broad strict tool % | 100.0 | 100.0 | +0.0 |
| broad right tool % | 92.4 | 94.1 | +1.7 |
valid = parser find offered tool call. strict = exact schema + required args.
right tool = expected next action, not merely valid different club.
dialect gate
Separate 90-prompt held-out suite: 50 trivial, 20 moderate, 20 complex. No prompt used for gradient.
| measure | before | after |
|---|---|---|
| dialect-clean trace % | 1.11 | 100.0 |
| function-word ratio % | 7.25 | 2.44 |
User asks/wants/... trace | 89 | 0 |
no tools needed trace | 70 | 0 |
need to trace | 4 | 0 |
| complex think median word | 28 | 25 |
complex median gate protect brain meat: after must keep at least 80% old median and at least 25 word. grug remove grammar, not reasoning branch.
data repair
grug-think-v3-10k rewrites only
private reasoning from v2 dataset.
- 10,000 trajectory / 62,722 think turn
- 11,889 changed trace
- exact technical anchor retention: 100.0%
- function-word ratio: 12.2% -> 11.2%
- matched planner-English patterns after validation: 0
- every visible answer, tool call, argument, result, system/user message unchanged
correction recipe
-
start public pre-fix
ProCreations/grug-v2-9b -
that checkpoint already carry verifier RL: valid XML, strict argument, right club, closed think reward with rope back to frozen Grug v1
-
rank-8 LoRA, alpha 16, LR 0.0001; final transformer layers 28 onward only
-
adapter delta scale base=0.75; self_attn=-0.470 selected by held-out style screen, then accepted only by whole capability gate
-
2,440 examples: {"calibration": 640, "coding": 805, "no_tool": 640, "tool": 355}
-
loss scope: private think tokens only; visible answer/tool call masked
-
max context 4,096; 1 epoch; vision tower frozen
-
synthetic calibration covers hello-world, direct multiplication, concise concept explanation
-
checkpoint release only after joint capability + dialect gate
pre-fix weights remain on branch pre-dialect-fix-2026-07-13.
brain + tool shape
Reasoning stays inside <think>...</think>. Native XML tool call stays:
<tool_call>
<function=bash>
<parameter=command>
python -m pytest -q
</parameter>
</function>
</tool_call>
use
from transformers import AutoModelForImageTextToText, AutoTokenizer
import torch
name = "ProCreations/grug-v2-9b"
tok = AutoTokenizer.from_pretrained(name)
model = AutoModelForImageTextToText.from_pretrained(
name, dtype=torch.bfloat16, device_map="auto")
Need Transformers with Qwen3.5 support. Popular GGUF rocks live at
ProCreations/grug-v2-9b-gguf.