--- title: OpenEnv in Practice: Evaluating Tool-Using Agents in... description: OpenEnv is an open-source framework from Meta and Hugging Face for evaluating AI agents in real-world environments rather than simulations. Turing contributed... canonical: https://daily.dev/posts/openenv-in-practice-evaluating-tool-using-agents-in-real-world-environments-kkn9ylmtv twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenEnv in Practice: Evaluating Tool-Using Agents in Real-World Environments | daily.dev og:description: OpenEnv is an open-source framework from Meta and Hugging Face for evaluating AI agents in real-world environments rather than simulations. Turing contributed... og:url: https://daily.dev/posts/openenv-in-practice-evaluating-tool-using-agents-in-real-world-environments-kkn9ylmtv og:image: https://api.daily.dev/og/posts/KkN9YLMTV.png og:image:alt: OpenEnv in Practice: Evaluating Tool-Using Agents in Real-World Environments 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. # OpenEnv in Practice: Evaluating Tool-Using Agents in Real-World Environments **[Hugging Face](https://daily.dev/sources/huggingface)** · 8 min read · 2 upvotes · 0 comments ## Summary OpenEnv is an open-source framework from Meta and Hugging Face for evaluating AI agents in real-world environments rather than simulations. Turing contributed a production-grade Calendar Gym benchmark that tests agents on realistic constraints like access control, temporal reasoning, and multi-step workflows. Evaluation revealed that while agents achieve ~90% success on explicit tasks, performance drops to ~40% with natural language ambiguity. Multi-step reasoning, malformed tool arguments, and incorrect action ordering remain primary bottlenecks, highlighting the gap between research demos and production reliability. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Building the Open Agent Ecosystem Together: Introducing OpenEnv](https://daily.dev/posts/building-the-open-agent-ecosystem-together-introducing-openenv-1lecmfung) · Hugging Face · 5 upvotes · 0 comments - [Meta and Hugging Face Launch OpenEnv, a Shared Hub for Agentic Environments](https://daily.dev/posts/meta-and-hugging-face-launch-openenv-a-shared-hub-for-agentic-environments-80l88juwi) · InfoQ · 2 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#llm](https://daily.dev/tags/llm), [#machine-learning](https://daily.dev/tags/machine-learning) [View this post on daily.dev](https://daily.dev/posts/openenv-in-practice-evaluating-tool-using-agents-in-real-world-environments-kkn9ylmtv) ```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":"OpenEnv in Practice: Evaluating Tool-Using Agents in Real-World Environments","url":"https://daily.dev/posts/openenv-in-practice-evaluating-tool-using-agents-in-real-world-environments-kkn9ylmtv","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openenv-in-practice-evaluating-tool-using-agents-in-real-world-environments-kkn9ylmtv"},"datePublished":"2026-02-12T12:10:53.180Z","dateModified":"2026-03-15T05:25:11.002Z","description":"OpenEnv is an open-source framework from Meta and Hugging Face for evaluating AI agents in real-world environments rather than simulations. 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