LlamaFactory Creator Open-Sources PenguinHarness: Self-Evolving Agents for $0.02

机器之心 · wechat · 2026-08-03

Zheng Yaowei, creator of LlamaFactory, has open-sourced PenguinHarness, a new agent framework focused on low-cost construction and local self-evolution.

Core Features & Advantages:

Automated Building: Automatically generates scaffolding, prompts, and frontends based on natural language needs. Builds a RAG app for just $0.02, significantly outperforming OpenAI Codex in time and cost.
Self-Evolution Loop: Features a multi-agent collaboration workflow (generating questions, blind scoring, analyzing, and iterating) to automatically boost agent accuracy (e.g., from 50% to 90%) for under $0.07 per optimization.
Architecture: Uses the file system as the single source of truth with a unified messaging protocol and a minimal system prompt (1,300 tokens).
Safety Contracts: Restricts modifications to prevent privilege escalation, supports snapshot rollbacks, and isolates target agents from grading rubrics to prevent reward hacking.

Ecosystem & Deployment:

Supports over 1,000 models, includes skills for model training/deployment, and enables visual multimodal feedback for DeepSeek.
Successfully deployed in real-world scenarios, including medical report auditing (reducing 30-minute checks to seconds) and manufacturing line inspections (reducing downtime by 65%).

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LlamaFactory Creator Open-Sources PenguinHarness: Self-Evolving Agents for $0.02

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