Launching today
PenguinHarness
Let Agents Autonomously Build Better Agents for $0.02
18 followers
Let Agents Autonomously Build Better Agents for $0.02
18 followers
PenguinHarness is an open-source self-improving harness built by the team behind LlamaFactory. Its AI-native SDK enables agents to build, evaluate, and optimize other agents. It supports 1,000+ models, reusable skills, tool and context management, automatic data generation, multi-agent evaluation, and closed-loop harness evolution. With one prompt and about $0.02, an agent can build a complete RAG application.
Products used by PenguinHarness
Explore the tech stack and tools that power PenguinHarness. See what products PenguinHarness uses for development, design, marketing, analytics, and more.
OpenRouter Model FusionRun many models side by side and fuse the best answer
5.0 (40 reviews)
OpenRouter made it much easier for us to test PenguinHarness across a wide range of models through one consistent API. It significantly reduced the integration work required to support 1,000+ models and helped us compare model behavior, cost, and reliability more efficiently.
GitHubHow people build software
5.0 (632 reviews)
GitHub is the foundation of how we build PenguinHarness in the open. It enables our team and community to collaborate on code, issues, evaluations, and new model integrations, while making every part of the project transparent and reproducible.
Claude CodeAnthropic’s deep-context AI coder
5.0 (576 reviews)
Claude Code helped us move faster while building and refining PenguinHarness. We used it extensively for implementation, debugging, and reviewing complex agent workflows, and it also gave us a strong reference point for designing a more open and model-agnostic agent harness.