Langtail

Debug prompts, run tests, and observe what's happening in production

Fine-tune prompts and settings to optimize your LLM's performance in record time

Use advanced features like support for variables, tools (functions), vision and more

See how prompt changes affect your AI's output instantly

Roll back to previous prompt versions with full version history

Prevent surprises by running tests to ensure you aren't breaking your app

Benchmark prompt variations to identify the top-performing one

Ensure your app's stability when moving to new model versions by leveraging your test suite

Publish your prompts as API endpoints, allowing you to make changes without redeploying your entire application

Deploy prompts to separate preview, staging, and production environments to keep everything aligned with the way your team ships

Separate prompt development from app development, enabling your team to work more independently and efficiently

Capture performance data, token count, and LLM costs for every API call to the LLM

View aggregated prompt performance metrics including request count, cost, and latency

Identify issues by monitoring user interactions with your app in production