Langtail

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Free 1,000 logs per month / LLM testing / AI Firewall - From $99/month

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Langtail

Description

Langtail is a low-code platform that empowers product and engineering teams to test, debug, and deploy LLM prompts using an intuitive spreadsheet-like interface accessible to non-coders. It supports leading providers like OpenAI, Anthropic, Gemini, and Mistral, with an AI Firewall to protect against prompt injections and unsafe outputs. Self-hosting options ensure enterprise-grade security, making it essential for reliable, collaborative AI app development from ideation to production.

Key capabilities

  • Low-code platform for testing, debugging and deploying LLM prompts
  • Spreadsheet-like interface for prompt management accessible to non-coders
  • Supports OpenAI, Anthropic, Gemini, Mistral and other LLM providers
  • AI Firewall protects against prompt injections and unsafe outputs
  • Self-hosting option for enterprise security

Core use cases

  1. 1.Testing LLM prompts before deployment
  2. 2.Blocking AI attacks and unsafe outputs
  3. 3.Managing and refining prompts across teams
  4. 4.Gaining insights from test results and analytics

Is Langtail Right for You?

Langtail is right for you if you're working on collaborative LLM app development as part of a product or engineering team that benefits from a user-friendly, low-code interface for prompt testing and management, but it might not suit solo developers or those needing mobile access or pure code frameworks.

Best for

  • Product and engineering teams for collaborative prompt building, testing and deployment
  • Teams developing LLM-powered apps with end-to-end management and analytics
  • Cross-functional teams including non-technical users leveraging no-code tools

Not ideal for

  • Solo developers with basic or one-off prompt needs
  • Users requiring mobile access
  • Teams avoiding managed platforms in favor of pure code frameworks

Standout features

  • Intuitive spreadsheet interface
  • Multi-LLM provider support
  • Built-in AI Firewall
  • Real-time team collaboration
  • Prompt performance analytics
  • Enterprise self-hosting

User Feedback Highlights

Most Praised

  • Saves hundreds of hours on prompt debugging and consistency
  • Simplifies collaboration for product and engineering teams
  • User-friendly spreadsheet interface accessible to all team members
  • Keeps users sane with reliable LLM app behavior
  • Timesaver for prompt refinement and testing

Common Complaints

  • Still in early development phase with potential instability
  • No dedicated mobile application
  • Rate limiting can slow down usage
  • Provider switching may cause performance disruptions