ClawBench browser-agent benchmark — 283 everyday tasks across 163 live production sites, blocks final write request so agents run end-to-end on real sites without side effects
ClawBench benchmarks browser agents on 283 everyday tasks across 163 live production sites, with a mechanism that blocks only the final write request so agents can run end-to-end on real sites without real-world side effects. The methodology innovation addresses the long-standing problem of evaluating browser agents on production sites without risking real-data modifications.
The substantive piece is the final-write-block evaluation primitive. Pre-ClawBench browser-agent benchmarks faced a structural tradeoff: synthetic-site evaluation (controllable but unrealistic) versus live-site evaluation (realistic but risks real side effects when agents click final-submit buttons). ClawBench's final-write-block mechanism enables live-site evaluation without the side-effect risk — running the agent end-to-end across booking flows, account-creation forms, comment-submission interfaces while preventing the actual submission.
The competitive read against OSWorld's general computer-use evaluation is that browser-specific agent evaluation is now stratified into its own subcategory with ClawBench as the production-site reference benchmark. The 163-site coverage provides statistical power that synthetic-site benchmarks can't match. Browser-agent procurement evaluation should now include ClawBench-class metrics alongside the established WebArena and OSWorld comparisons.
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