PromptLayer Has a Free API: Version Control Your LLM Prompts and Track Every Request With Two Lines of Code

Your AI app has 15 prompts scattered across your codebase. Someone changed the system prompt last Tuesday and user satisfaction dropped 20%. But you can't diff prompts, roll back, or even tell which version is running in production. PromptLayer is Git for your LLM prompts. What PromptLayer Actually Does PromptLayer is a prompt management and LLM observability platform. It provides version control for prompts (edit, test, and deploy prompts without code changes), request logging (every LLM call captured with inputs, outputs, latency, and cost), and a visual prompt editor for non-technical team members. The integration is minimal: wrap your OpenAI client and every request is automatically logged. Prompts are fetched from PromptLayer at runtime, so you can update them without deploying code. Free tier: 5,000 requests/month. Works with OpenAI, Anthropic, and any LLM via custom integration. Quick Start pip install promptlayer import promptlayer # Wrap your OpenAI client — that's it OpenAI =