Comparison

Klevu (now Athos Commerce) vs Clerk.io

Klevu (now Athos Commerce) and Clerk.io both land on Depends.

Klevu (now Athos Commerce)

Depends

Confidence: Medium

Buy if you run a mid-market or larger store with a big or multi-language catalog and in-house technical help.

Depends

Confidence: Medium

Buy if you run a growing online store with real traffic and want search, recommendations, and email from one vendor.

Klevu (now Athos Commerce) versus Clerk.io
Compare	Klevu (now Athos Commerce)	Clerk.io
Verdict	Depends	Depends
Best for	Mid-market ecommerce stores	Mid-size stores with steady traffic
Who it's not for	Small Shopify stores . default search suffices	Brand-new stores with little traffic . AI has nothing to learn from
Privacy	No known public vulnerabilities found in the sources reviewed; no public security page found.^⁹	SOC 2 and ISO 27001 trust center with GDPR DPA; one high-severity 2022 WordPress plugin CVE, fixed in v4.0.0.
Support quality	No direct user evidence found	No direct support evidence found.
Public sentiment	Users find the search capable but say it demands in-house technical resources, and ratings slipped after the merger.^²	Reviews are strong . 4.8/5 on G2 (126 reviews) and 4/5 on Trustpilot . though many testimonials are vendor-published.¹¹
Biggest gotcha	Entry price ~$449/month requires an annual contract; no free or monthly option found.^³	WordPress sites must run plugin version 4.0.0+; older versions carry CVE-2022-3907.