Langtail

Langtail is a prompt management platform that enables product teams to build, test, and deploy AI prompts collaboratively. It offers a spreadsheet-like interface for managing prompts without coding, allowing teams to experiment with different models, parameters, and prompts. Key features include natural language evaluation, pattern matching, custom code validation, and an AI Firewall that blocks prompt injections, DoS attacks, and information leaks with one-click setup. Langtail integrates with major LLM providers such as OpenAI, Anthropic, Google Gemini, Meta, and Mistral. It provides a TypeScript SDK and OpenAPI for developers, and supports self-hosting for maximum security and data control. The platform is designed for product, engineering, and business teams, helping them gain data-driven insights from prompt performance and user interactions. Langtail is used by companies like Deepnote to save hundreds of hours and reduce headaches in AI development.

Key Benefits

• Spreadsheet-like interface easy for non-coders
• Comprehensive prompt control with evaluation and validation
• AI Firewall for security against prompt injections and attacks
• Works with all major LLM providers