--- title: Anthropic’s Playground vs. OpenAI’s: The week-old tool... description: A hands-on comparison pits Anthropic's newly launched, stateless Playground against OpenAI's long-standing Playground (now called Chat). Anthropic replaced its... canonical: https://daily.dev/posts/anthropic-s-playground-vs-openai-s-the-week-old-tool-beat-the-six-year-incumbent-7g0u3dktj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Anthropic’s Playground vs. OpenAI’s: The week-old tool beat the six-year incumbent | daily.dev og:description: A hands-on comparison pits Anthropic's newly launched, stateless Playground against OpenAI's long-standing Playground (now called Chat). Anthropic replaced its... og:url: https://daily.dev/posts/anthropic-s-playground-vs-openai-s-the-week-old-tool-beat-the-six-year-incumbent-7g0u3dktj og:image: https://api.daily.dev/og/posts/7G0U3DKtJ.png og:image:alt: Anthropic’s Playground vs. OpenAI’s: The week-old tool beat the six-year incumbent og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Anthropic’s Playground vs. OpenAI’s: The week-old tool beat the six-year incumbent **[The New Stack](https://daily.dev/sources/newstack)** · 8 min read · 0 upvotes · 0 comments ## Summary A hands-on comparison pits Anthropic's newly launched, stateless Playground against OpenAI's long-standing Playground (now called Chat). Anthropic replaced its Workbench tool on August 18 with a leaner, stateless Playground that stores nothing and dropped features like saved prompts, version history, evals, and team sharing (old Workbench data must be exported by September 1). The same week, OpenAI announced it will shut down its saved Prompts and Evals platform on November 30. Testing both tools on a PR-review bot task, Anthropic's export produced clean, runnable Python code on the first try, while OpenAI's export dumped a session transcript including encrypted reasoning that required manual fixes. Anthropic also gave a clear, actionable error message when hitting a token cap, while the equivalent setting couldn't be found in OpenAI's interface. The verdict favors Anthropic's Playground for cleaner exports and better error handling despite fewer features. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What replaced Anthropic's Workbench tool and when did it launch? Anthropic replaced Workbench with a new tool called Playground on August 18. Playground is stateless, meaning it stores nothing on Anthropic's servers, and it removed features that Workbench had, including saved prompts, version history, evals, and team sharing. Anyone with data stored in Workbench has until September 1 to export it before it's gone. _Developers evaluating prompt-testing tools can follow changes like this on daily.dev._ ### When is OpenAI shutting down its saved Prompts and Evals platform? OpenAI announced it will shut down its saved Prompts and Evals platform on November 30. This announcement came the same week Anthropic launched its own stripped-down Playground replacement, with both companies effectively concluding that prompts belong in code rather than in a persistent web console. _Teams relying on OpenAI's prompt tooling can track this kind of platform change on daily.dev._ ### Why did the exported code from OpenAI's Playground fail to run properly when testing a PR review bot? The exported Python file from OpenAI's Playground did not contain the bot itself; instead it exported the full session transcript, including the original instructions, the model's earlier answer, and its private reasoning as an encrypted block. Running the file sent that entire transcript back to the model, which returned nothing new since it saw the task as already answered, requiring the old response to be deleted and a print statement added manually. _Anyone weighing playground export quality before wiring prompts into code can compare notes on daily.dev._ ## Similar posts on daily.dev - [I put ChatGPT Work up against Claude Cowork, and the winner wasn't who I expected](https://daily.dev/posts/i-put-chatgpt-work-up-against-claude-cowork-and-the-winner-wasn-t-who-i-expected-kbas6kk3p) · XDA Developers · 2 upvotes · 1 comments - [OpenAI vs Anthropic API Pricing Comparison \(2026\): Which LLM Is Actually Cheaper?](https://daily.dev/posts/openai-vs-anthropic-api-pricing-comparison-2026-which-llm-is-actually-cheaper--d59asu5ro) · finout · 2 upvotes · 0 comments --- Tags: [#devtools](https://daily.dev/tags/devtools), [#openai](https://daily.dev/tags/openai), [#claude](https://daily.dev/tags/claude), [#prompt-engineering](https://daily.dev/tags/prompt-engineering) [View this post on daily.dev](https://daily.dev/posts/anthropic-s-playground-vs-openai-s-the-week-old-tool-beat-the-six-year-incumbent-7g0u3dktj) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Anthropic’s Playground vs. OpenAI’s: The week-old tool beat the six-year incumbent","url":"https://daily.dev/posts/anthropic-s-playground-vs-openai-s-the-week-old-tool-beat-the-six-year-incumbent-7g0u3dktj","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/anthropic-s-playground-vs-openai-s-the-week-old-tool-beat-the-six-year-incumbent-7g0u3dktj"},"datePublished":"2026-08-24T19:37:06.827Z","dateModified":"2026-08-24T19:37:32.655Z","description":"A hands-on comparison pits Anthropic's newly launched, stateless Playground against OpenAI's long-standing Playground (now called Chat). 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