WebArena

Self-hosted

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Freedom report

One barScore 5.3

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

WebArena is ranked #20 of 29 in LLM evaluation tools on Freedom251. It runs on Self-hosted.

Compared on LLM evaluation tools

Deployment options: both

Best WebArena alternatives

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The record

Purpose: WebArena is a standalone, self-hostable web environment and benchmark for building autonomous agents.
Simulated websites: It creates websites across four popular categories with functionality and data modeled on real-world equivalents.
Embedded resources: The environment includes tools and knowledge resources as independent websites.
Task input: The benchmark evaluates agents that turn high-level natural-language commands into web interactions.
Task validation: WebArena provides annotated programs to programmatically validate each task’s functional correctness.
Observation formats: Agents can observe a page through its URL and content, represented as a screenshot, HTML DOM tree, or accessibility tree.
Evaluation: The site describes evaluating information-seeking answers against annotated references and checking intermediate execution states programmatically.
Demo environments: The demos include social forum, online shopping, content management, collaborative software development, map, wiki, calculator, and scratchpad sites.
Example tasks: Shown tasks include creating a repository and checking the status and arrival time of an order.
Licensing: The WebArena website states that it is licensed under Creative Commons Attribution-ShareAlike 4.0 International.
Research affiliations: The page lists Carnegie Mellon University and Inspired Cognition as author affiliations.
Setup: The canonical repository README specifies Python 3.10 or newer and installation of its requirements and Playwright browser.
Evaluation requirement: The repository says to set up your own WebArena websites for correct evaluation and describes the demo sites as browsing-only.
External model key: The repository’s evaluation instructions require exporting a valid OpenAI API key before launching evaluation.

Where it ranks on Freedom251

Best LLM Evaluation Tools in 2026#20 of 29

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Sources

webarena.dev/og/· checked 5 Oct 2026
github.com/web-arena-x/webarena· checked 5 Oct 2026