TMTPOST -- Sequoia China has officially launched a new AI benchmarking tool, xBench (available at xbench.org), along with a research paper titled "xBench: Tracking Agents’ Productivity, Scaling with Profession-Aligned Real-world Evaluations." The tool also ranks major AI products across these benchmarks, offering a comprehensive performance comparison. In addition to the benchmarks, Sequoia China introduced a methodology for evaluating vertical-domain AI agents. The team developed specialized evaluation frameworks for agents in recruitment and marketing, two fields with high demand for domain-specific intelligence. Both the evaluation results and methodologies are publicly accessible and updated in real time on the xBench website.