Anthropic Rebrands Workbench as Playground for Claude API Testing
Anthropic retired the legacy Workbench on 17 August 2026 and shipped Playground the next day. The replacement is stateless: no saved prompts, no version history, no variables, no evals and no sharing, with nothing stored on Anthropic’s servers. In exchange it supports every Messages API parameter, ships templates for server-side features such as code execution and web search, shows the full SDK request alongside the response for every run, and exports to code. Three experimental prompt endpoints were retired alongside it, and the export window for Workbench data closed permanently on 1 September 2026.
