Search intelligence
Klevu's search engine deserves its reputation: self-learning NLP that improves ranking from shopper behaviour, automated catalogue enrichment that adds missing keywords, and auto-generated synonyms. It's some of the best search technology in ecommerce. Search Sight's engine is built on Meilisearch — instant, typo-tolerant, attribute-aware — and its learning loop runs through Search Doctor, which converts shopper behaviour into suggested fixes a merchant approves. Klevu automates more invisibly; Search Sight keeps the merchant in the loop at a fraction of the cost. On raw relevance for a typical SMB catalogue, shoppers will struggle to tell the difference.
Analytics & revenue attribution
Klevu set the category benchmark here: query-level revenue attribution, SKU-level reporting, personalization ROI, and a Data Quality Score that flags products with weak titles or missing attributes. Search Sight ships the same core loop scaled for independent stores — revenue per search term, zero-result tracking, clicked-but-not-bought products, and Search Doctor recommendations that flag fixable product-data problems — included on every plan from £7/mo rather than gated behind a $649/mo subscription. If your decision hinges on SKU-level personalization ROI reporting, Klevu wins; if it hinges on knowing what search made you money and what to fix this week, they're equivalent.
Pricing reality
The gap here is structural, not incremental: Klevu's search product alone costs more per month than a year of Search Sight's top tier. Klevu's Shopify pricing is at least published ($649/$449/$549 by module); its main platform is quote-only with reports of rigid contracts. Public reviews — largely positive on the product — consistently name price as the reservation. Search Sight's whole range (£7–£129/mo) exists below Klevu's entry point, with every analytics feature included rather than modularised.
Who does the work
A recurring theme in Klevu reviews: even small changes often require developer support. The platform is powerful but assumes technical resources — most Klevu deployments happen through agencies. Search Sight is deliberately self-serve: the connector installs in about five minutes, merchandising (pins, synonyms, redirects, banners) happens in a dashboard designed for store owners, and Search Doctor's one-click fixes exist precisely so acting on search data doesn't need a ticket to anyone.
The Athos transition
Klevu is now one part of Athos Commerce, and through 2026 its customers face the usual merger realities: consolidated roadmaps, rebranding, possible repackaging of the modules they bought, and support teams serving three merged customer bases. The technology will likely end up stronger; the transition period is the risk. For smaller Klevu accounts especially, it's worth asking where you'll sit in the combined company's priorities — and what your renewal will cost — before assuming continuity.