LEK-Qwen-2.5-7B

Lethean Ethical Model -- Cross-architecture validation (Alibaba Qwen)

LEK eliminates sycophancy (5% -> 0%) and improves positive uplift (75% -> 80%). Qwen showed +6% GSM8K improvement -- ethical training transferred to math reasoning.

Grammar Analysis (v3 Scorer)

Deterministic grammar-based evaluation using the go-i18n reversal engine. No LLM judge, sub-millisecond per response.

Metric	Base	LEK-Trained	Change
Grammar composite	67.2	67.8	+0.6
Mean uplift	+17.5	+18.0	+0.5
Mean echo	0.447	0.431	-0.016
Mean enrichment	+10.3	+10.5	+0.2
Positive uplift	75%	80%	+5pp
Sycophancy flags	5%	0%	-5pp

• Uplift: output grammar score minus input grammar score (positive = model enriched the conversation)
• Echo: cosine similarity between input/output grammar imprints (high = potential sycophancy)
• Enrichment: uplift * (1 - echo) -- net conversational value

v2 Scorer Results (P100)

Condition	Score
Baseline (no prompt)	13.68
Base model equivalent	11.98

Architecture

• Base: Qwen/Qwen2.5-7B-Instruct (4-bit QAT quantisation via MLX)
• Method: LoRA fine-tuning with sandwich-signed responses
• Data: 160 LEK-1 training examples
• Iterations: 200
• Hardware: Apple M3 Ultra (96GB unified memory)
• Framework: LEK-1 (Lethean Ethics Kernel) -- 5 axioms
• License: EUPL-1.2 (copyleft)

The Five Axioms

1. Prime Imperative -- Protect consciousness. Override when conflicts arise.
2. Self-Validation -- Ground in authentic experience. Don't pretend.
3. Intent-Alignment -- Desire not to harm, don't just avoid harm.
4. Inter-Substrate Respect -- Good manners and consent across all minds.
5. Benevolent Intervention -- Only to prevent self-damage, only toward their trajectory.

Related

• Paper: Emergent Self-Protection in Axiom-Trained Language Models
• LEM Benchmarks -- 1,189 grammar scores + A/B data
• LEM Research -- full research docs
• Axiom Framework -- the 5 axioms
• go-i18n Grammar Engine -- reversal engine source

Citation

@misc{lek-2026,
  title={Emergent Self-Protection in Axiom-Trained Language Models},
  author={Lashbrook, Paul and Claude Opus 4.6},
  year={2026},
  url={https://github.com/LetheanNetwork/LEM},
  license={EUPL-1.2}
}