Launch Week - Day 1: LangWatch New Prompt Playground

LangWatch - v1.9.0 · Nov 6, 2025

The redesigned Prompt Playground in LangWatch makes scripting, testing, and tracking prompts straightforward. This update streamlines your workflow so anyone—alone or with a team—can edit, compare, and organize prompts alongside real data, without bouncing between tools.

  • Edit prompts and run live tests with real conversations or traces.

  • Compare different prompts and multiple versions/iterations side by side and see how changes affect results.

  • Keep all your prompt drafts, notes, and experiments organized in one place.

  • Link prompt versions to output analytics for faster feedback.

  • Collaborate with teammates to refine and share prompt ideas.

Blogpost: Introducing LangWatch newest Prompt Playground

Docs: Prompt Playground

Ship agents with confidence, not crossed fingers

Get up and running with LangWatch in as little as 5 minutes.

Ship agents with confidence, not crossed fingers

Get up and running with LangWatch in as little as 5 minutes.

Ship agents with confidence, not crossed fingers

Get up and running with LangWatch in as little as 5 minutes.