Head to head, rubric v2.3.0
Writesonic is 5 points more agent-ready than Surferseo (73/100 against 68/100). Both scores come from public HTTP responses only.
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Share of each check group passed
Machine access
Writesonic 100%
Surferseo 100%
Content legibility
Writesonic 92%
Surferseo 100%
Discovery surface
Writesonic 60%
Surferseo 25%
Identity & policy
Writesonic 42%
Surferseo 42%
Agent-facing performance
Writesonic 75%
Surferseo 100%
Agent protocols
Writesonic 20%
Surferseo 0%
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