Bring rigor to your AI agents. Trusted by 8,500+ developers, Leo is a lightweight Python SDK designed to integrate prompt optimization directly into your CI/CD pipelines or internal tools. Stop shipping prompts that only work "most of the time." Leo provides a structured way to optimize drafts into role-based instructions and automatically evaluates them against real-world test cases using G-Eval and Hallucination Accuracy metrics. It's the missing piece of the LLM DevStack.see more
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Are you tired of deploying Large Language Model (LLM) applications only to find that your carefully crafted prompts fail unpredictably in real-world scenarios? It's a common frustration: your AI agents perform brilliantly during initial testing, but once they face live user input, the quality dips, leading to inconsistent results and user dissatisfaction. Introducing Leo, the Prompt Engineering SDK, designed to bring the same level of rigor and reliability to your AI development that you expect from traditional software engineering. Trusted by over 8,500 developers, Leo is not just another testing utility; it’s a lightweight yet powerful Python SDK built to seamlessly integrate prompt optimization directly into your existing CI/CD pipelines or internal development workflows. We understand that shipping prompts that only work 'most of the time' simply isn't good enough anymore. Leo provides the structured framework necessary to move beyond guesswork, transforming initial prompt drafts into robust, role-based instructions that consistently deliver high-quality outputs, ensuring your AI performs reliably every single time.