Head to head, rubric v2.3.0
Semrush is 8 points more agent-ready than Similarweb (73/100 against 65/100). Both scores come from public HTTP responses only.
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Share of each check group passed
Machine access
Semrush 100%
Similarweb 100%
Content legibility
Semrush 92%
Similarweb 92%
Discovery surface
Semrush 60%
Similarweb 45%
Identity & policy
Semrush 42%
Similarweb 42%
Agent-facing performance
Semrush 100%
Similarweb 38%
Agent protocols
Semrush 0%
Similarweb 0%
Catalogue access
Semrush 100%
Similarweb 0%
Product data legibility
Semrush 0%
Similarweb 0%
Agent-commerce protocols
Semrush 0%
Similarweb 0%
Checkout traversability
Semrush 30%
Similarweb 0%
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