
Open-source benchmark for browser AI agents on real live websites.
By Tanmay Verma, Founder · Last verified 06 Jul 2026
In short
ClawBench — Open-source benchmark for browser AI agents on real live websites. Best for AI benchmarking researchers, Browser agent developers, Model evaluation teams. Free to use.
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ClawBench is the most rigorous open benchmark for browser agents today, thanks to its live website tasks and two-stage scoring. It's a must-use for any serious agent evaluation, though it requires technical setup. The gap between best model and human-level performance is stark—making it a valuable reality check for the field.
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Last verified: July 2026
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
29 mentions across 4 sources (YouTube, Bluesky, GitHub, Lemmy).
How likely is ClawBench to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →ClawBench is an open-source benchmark that evaluates browser-based AI agents by tasking them with real online activities—booking flights, ordering food, applying for jobs—on live websites. Unlike static or simulated benchmarks, ClawBench uses a two-stage scoring system: first, HTTP interception checks if the final request matches the expected URL/method; second, an LLM judge (currently deepseek-v4-pro) evaluates whether the agent actually fulfilled the instruction. The platform currently includes 283 tasks across 163 live platforms and supports multiple evaluation harnesses (claw-eval, WildClawBench, ClawMark) from a single CLI. ClawBench is designed for AI researchers, developers, and model builders who need a rigorous, real-world test of autonomous web agents. It provides a public leaderboard with metrics for both open-source and frontier closed-source models, with detailed traces for each run. The benchmark is built around "scoring rubrics" that separate deterministic interception from subjective reward, offering granular insight into agent performance. What makes ClawBench different is its commitment to live, dynamic tasks—no static snapshots or sandboxed environments. The benchmark is fully open-source, with the dataset, evaluation scripts, and traces available on GitHub and Hugging Face. It also fosters model submissions via a quickstart CLI and a Gradio Space leaderboard. With over 1,724 judge-verified runs across 13 frontier models and 283 tasks, ClawBench reveals that even the best model (claude-opus-4-7) achieves only 44.6% reward on V2, leaving a 55-point gap to human-level performance. This makes it a valuable reality check for the field.
We'd reach for ClawBench when we need to evaluate a browser agent on tasks that mirror real user behavior—ordering food, shopping, booking travel—on actual live sites. The two-stage scoring (HTTP interception + LLM judge) catches both the technical success of the HTTP request and the semantic fulfillment of the instruction. That's a huge step up from sandboxed benchmarks that can't test real-world edge cases. Where it bites: the setup requires comfort with a CLI, and the heavy reliance on third-party websites means tasks can break if those sites change their UI. Also, the LLM judge itself isn't perfect—it's a model evaluating a model, which can introduce bias. But the transparency (traces are public, rubrics are documented) lets you audit those judgments. Compared to alternatives like WebVoyager or OSWorld, ClawBench stands out because it integrates those very benchmarks as harnesses in its own CLI—you can run everything from one command. It's more comprehensive and better maintained, though the learning curve is real. In practice, ClawBench is for teams building autonomous agents, not casual users. If you're shipping a consumer-facing browser assistant, you need to know how it performs on live sites—ClawBench gives you that data. The fact that even claude-opus-4-7 only hits 44.6% reward on V2 shows we're far from agentic nirvana, but at least we have a honest measuring stick.
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