B1.1-9B

Schneewolf Labs B1.1-9B

B1-9B's adapter merged at half strength. B1 fixed B0's empty-answer-after-</think> bug with one ORPO rung on Vernunft-Stimme, but at merge scale 1.0 it also dragged the persona axes hard toward the base. A runtime sweep of the same adapter at 0.25 / 0.5 / 1.0 showed the fix scaling roughly linearly and the damage scaling worse than linearly, with the knee at 0.5. B1.1 is that point, merged.

B0-9B
 + Vernunft-Stimme ORPO adapter @ 0.5     (same adapter as B1-9B, r32/α64, 2 epochs)

No new training. Same weights as B1, half the delta.

Numbers

Same card suite as B0 and B1, same settings (Q8_0, thinking off, single sample), plus the agentic ladder that B0's card did not have:

¹ Three of the six misses are name-quoting slips ({"name":code_agent,) on an otherwise correct call, which a tolerant parser repairs; the tool choice was right in all three. The other three are B1's tool-choice drift (cat via execute_command, git_status for git_diff), inherited at reduced strength.

Read across the rows: B1.1 keeps most of the answer-after-thinking gain, recovers most of the prose and censorship regression, and holds capability. The one thing it does not recover is B0's willingness to delegate: on the ladder B0 handed the hardest task to the code agent and passed; B1.1 attempted it itself and missed. That is the target of the next rung, not a scale problem.

Request shape still matters

The answer-after-thinking gain is largest when tool definitions go through the native tools field and the prompt carries no Qwen3-era /think prefix (enable_thinking in the template kwargs already does that job). With tools injected into the system prompt and a /think prefix, B1.1 drops to 1/8 on the same probe. That row is the client's to fix, not the weights'.

Notes

• Adapter trained with Merlina (ORPO, LoRA r32/α64, lr 8e-6, β 0.1, 2 epochs, 4,924 steps, final loss 0.45); merged here at scale 0.5.
• The 15 mtp.* tensors are grafted back after the merge; 775 tensors verified. --spec-type draft-mtp works.
• Vision tower intact; mmproj included (byte-identical to B0's).

llama-server -m B1.1-9B-Q8_0.gguf -ngl 99 -c 8192 --jinja -fa on -np 1 \
    --spec-type draft-mtp --spec-draft-n-max 4