Langtail

Langtail is a prompt management platform designed for product teams, specifically engineered to simplify AI prompt engineering. It supports team collaboration in building, testing, and deploying AI prompts, enabling end-to-end control of AI workflows from conception to production.

Langtail is an LLMOps (Large Language Model Operations) platform designed for product, engineering, and business teams, helping accelerate AI application development and deliver more reliably into production environments. It offers full lifecycle management—from prompt experimentation, testing, and deployment to real-time monitoring—while enabling non-technical users (e.g., those familiar with spreadsheets) to participate in prompt management without coding. Additionally, it provides comprehensive prompt control features such as natural language evaluation, pattern matching, and custom code validation. By leveraging data-driven insights, it optimizes models, parameters, and prompt combinations, and can be self-hosted to ensure maximum security and data sovereignty.

Features

Collaborative Prompt Development: Work together in a visual Playground environment to experiment with, debug, and iterate on prompts, boosting team collaboration efficiency; it supports seamless multi-role collaboration among product, engineering, and business stakeholders.

AI Firewall: With one-click integration, it instantly blocks prompt injection, denial-of-service attacks, and information leaks, while supporting custom content filtering rules and real-time threat alerts.

Use cases

Build, test, and deploy AI prompts, supporting product teams throughout the entire workflow—from proof-of-concept stages to production environments.

Validate and optimize prompts through natural language evaluation, pattern matching, or custom code

Monitor user input and model responses in real time, analyzing key metrics such as latency and cost to improve efficiency

How to use

Experiment with and debug prompts in the Playground

Create test suites to evaluate changes in prompt performance

Publish prompts as API endpoints without redeploying application code

Pricing

Free plan: $0/month + VAT, includes 1,000 logs/month with no user limit; Team plan: $499/month + VAT, includes 10 users, unlimited logs, and 1-year data retention; Enterprise plan offers customization, including AI Firewall and dedicated support; all plans support major LLM providers such as OpenAI, Anthropic, Google Gemini, Mistral, and others.

Traffic data

Third-party estimates, not first-party analytics. Periods, devices and providers are shown separately.

No verifiable traffic data available

Sources

langtail.com ↗