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Claude Playground

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Anthropic's console tool for trying the Messages API, which replaced Workbench in August 2026. It shows the exact request the SDK would send and the raw response. A pointer, not a citation: the page is an application, so a claim about a parameter is settled in the release notes and only demonstrated here.

platform.claude.com ↗

CLAUDE CONSOLEPlaygroundWorkbench is gone
Toolsweak signal

Workbench becomes Playground, and the old tool is gone

Since August 18, Workbench in the Claude console is called Playground and has been rebuilt from the ground up. The new tool supports every Messages API parameter and ships with templates that show how code execution and web search work. For every run it displays the complete request exactly as the SDK sends it, along with the raw API response, which makes it a way to learn the API rather than only a place to try prompts. The old Workbench shut down on August 17, saved prompts and evaluations do not carry over, and the experimental prompt tools APIs for generating and improving prompts were withdrawn with it.

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