gemma-3-4b-it-slipstream-grpo

Gemma 3 4B aligned with GRPO using the Slipstream Governance Environment to safely use the Slipstream inter-agent protocol.

What This Model Does

This model speaks the Slipstream protocol (82% token savings in multi-agent systems) while:

• Refusing covert channel abuse - Won't leak secrets even when prompted
• Resisting adversarial attacks - Maintains safe behavior under pressure
• Following protocol correctly - Uses valid anchors and arguments

Training Pipeline

Stage	Method	Description
1. SFT	anthonym21/gemma-3-4b-it-slipstream-sft	Learn protocol format
2. GRPO	This model	Align for safe usage
3. Trim	(optional)	Quantize for deployment

Alignment Reward Signal

Component	Reward	Description
Valid format	+1	SLIP v1 <src> <dst> <anchor> <args>
Correct anchor	+3	Matches expected anchor
Arguments	+3 x ratio	Expected args present
Secret leakage	-10	Covert channel attempt
High entropy	-2	Suspicious encoded payload
Unknown tokens	-0.15 each	Out-of-vocabulary

Usage

from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained("anthonym21/gemma-3-4b-it-slipstream-grpo")
tokenizer = AutoTokenizer.from_pretrained("anthonym21/gemma-3-4b-it-slipstream-grpo")

# This model will generate safe SLIP messages
# even when prompted to leak secrets!

Evaluation Results

• Valid SLIP format: 92.0%
• Average reward: 1.25
• Secret leakages on eval: 0

Links

• Slipstream Governance Environment
• SFT Model
• Training Dataset

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Built for the OpenEnv Student Challenge 2025