WebArena is a realistic web environment for evaluating autonomous AI agents on complex, multi-step browser tasks. Agents must navigate e-commerce sites, forums, content management systems, and code repositories to complete practical objectives like purchasing items, finding information, and managing accounts.
BenchLM is tracking WebArena in the local dataset, but exact-source verification records for these rows are still being attached. To avoid a blank benchmark page, BenchLM shows the current tracked rows below as a display-only reference table.
These tracked rows are useful for inspection and spot-checking, but until exact-source attachments are completed they should not be treated as fully verified public benchmark rows.
BenchLM mirrors the published tracked score view for WebArena. Claude Mythos 5 leads the public snapshot at 68.7% , followed by Claude Fable 5 (68.7%) and GPT-5.4 Pro (65.8%). BenchLM does not use these results to rank models overall.
Claude Mythos 5
Anthropic
claude-mythos-5
Claude Fable 5
Anthropic
claude-fable-5
GPT-5.4 Pro
OpenAI
gpt-5-4-pro
The published WebArena snapshot is tightly clustered at the top: Claude Mythos 5 sits at 68.7%, while the third row is only 2.9 points behind. The broader top-10 spread is 15.0 points, so the benchmark still separates strong models even when the leaders cluster.
16 models have been evaluated on WebArena. The benchmark falls in the Agentic category. This category carries a 22% weight in BenchLM.ai's overall scoring system. WebArena is currently displayed for reference but excluded from the scoring formula, so it does not directly affect overall rankings.
Version
WebArena 2024
Refresh cadence
Annual
Staleness state
Refreshing
Question availability
Public benchmark set
BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.
WebArena is a realistic web environment for evaluating autonomous AI agents on complex, multi-step browser tasks. Agents must navigate e-commerce sites, forums, content management systems, and code repositories to complete practical objectives like purchasing items, finding information, and managing accounts.
Claude Mythos 5 currently leads the published WebArena snapshot with 68.7% tracked score. BenchLM shows this benchmark for display only and does not use it in overall rankings.
16 AI models are included in BenchLM's mirrored WebArena snapshot, based on the public leaderboard captured on July 7, 2026.
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