Lexmount

Lexmount builds browsers and web-access tools for AI agents. Our platform provides Web Search, Web Fetch and managed cloud browsers, with Moli as our browser engine.

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Browser Eval and LexBench

Browser Eval compares browsers and web tools through direct tool calls and fixed browser trajectory replay. It favors programmatic scoring where tasks have definite answers, retains evidence for each result, and turns saved results into HTML reports readers can inspect, rebuild and share. Optional verification provides a separate check of the results.

Our versioned benchmark datasets are available here:

Each dataset card describes its task scope, use, sources and evaluation limits. Derived datasets retain upstream attribution and document their changes.

Evaluation examples

The Web Fetch comparison shows how task requirements distinguish successful requests from complete content delivery. The Web Search comparison explains relevance grading, ranking quality, latency and cost with query-level examples. Both articles link the measured populations and evaluation conditions.