On August 18, Anthropic launched Playground, replacing its previous prompt-testing tool, Workbench, within its developer Console. This new iteration is stateless, meaning it does not retain or store data on Anthropic's servers. Consequently, features such as saved prompts, version history, evals, and team sharing have been removed.
Anthropic's move to a stateless Playground aligns with a broader trend in the AI industry. OpenAI, which has offered its own Playground tool since June 2020, announced it would shut down its saved Prompts and Evals platform by November 30. Both companies appear to have reached the conclusion that prompt management is best handled within a developer's code rather than through a web-based console.
The article details a comparison between Anthropic's new Playground and OpenAI's established Playground. The test involved building a PR review bot in both tools using identical instructions and code changes. The evaluation focused on the ability to export the bot into functional code and how each tool handled forced failures, simulating real-world request breakdowns.
It is noted that neither Anthropic nor OpenAI's Playground tools are covered under standard subscription plans; users must add credits to utilize them. The specific prompts and diffs used in the testing are available for others to replicate the comparison.
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Anthropic replaced its Workbench prompt-testing tool with Playground, a stateless version that removes features like saved prompts and version history. This change aligns with OpenAI's decision to shut down its own saved Prompts and Evals platform, indicating a shared industry conclusion that prompts should reside in code rather than web consoles. The article compares the functionality of Anthropic's new Playground with OpenAI's long-standing Playground.