# Arthur Ai Arthur Bench > Publicly sourced profile assembled by Optimly, in the Optimly AI Brand Index. Last refreshed 2026-10-04. - **Business Profile:** https://optimly.ai/brand/arthur-ai-arthur-bench - **Dataset:** https://optimly.ai/brand/arthur-ai-arthur-bench.json - **Markdown:** https://optimly.ai/brand/arthur-ai-arthur-bench/llms.txt - **Official website:** https://arthur.ai - **Slug:** arthur-ai-arthur-bench - **Categories:** ai-machine-learning, developer-tools ## Overview - **Tagline:** Arthur Bench translates raw LLM outputs into consistent, business-focused performance scores that allow for direct comparison between vastly different model architectures. Source: Brand's website (https://arthur.ai) · 2026-10-04 - **Description:** Arthur Bench is an open-source evaluation framework designed to help organizations compare and benchmark the performance of Large Language Models (LLMs). Developed by Arthur AI, it provides a suite of tools for assessing model outputs against specific business criteria to facilitate data-driven decisions during the AI model selection process. Source: Brand's website (https://arthur.ai) · 2026-10-04 ## Offerings - **Core capabilities:** Arthur Bench (Open Source LLM Evaluation Framework) Source: Brand's website (https://arthur.ai) · 2026-10-04 - **Pricing:** Free (Open Source) with Enterprise upsell to Arthur AI Observability platform. Source: Brand's website (https://arthur.ai) · 2026-10-04 ## Audience - **Target industry:** Data scientists, AI engineers, and enterprise product teams building LLM-powered applications. Source: Brand's website (https://arthur.ai) · 2026-10-04 ## Landscape - **Competitors:** - Weights & Biases (W&B) Prompts - Arize Phoenix - Promptfoo - Giskard Source: Brand's website (https://arthur.ai) · 2026-10-04 Page last updated 2026-10-17.