AI Search vs Klevu for OpenCart: Better Alternative 40× Cheaper

Klevu is a leader in AI search for e-commerce. We're not trying to convince you it's bad. It's very good. The question is different: how much are you really willing to pay if your OpenCart store has 1k–10k SKU and does $5k–$50k/mo? Klevu starts at $99/month and quickly grows to $499. AI Search v1.0.5 — from $12. This article is an honest comparison where we name Klevu's strengths too. If your standard LIKE search isn't finding products — read "Why OpenCart search doesn't find products" first, then come back here for a solution.

TL;DR — comparison table

Price: $12-199/mo vs $99-499/mo

Klevu is a SaaS platform with AWS infrastructure, data scientists team, sales department and marketing. That costs money. They can't afford to sell below $99/mo — they'd go negative or break unit economics.

AI Search is an OpenCart module (extension) optimized for one platform. We don't have 50 engineers and a VP of Sales. Infrastructure costs less. Pricing:

Real case. Store with 10,000 SKU, $25k/mo revenue. Klevu Pro = $299. AI Search Business = $29. Savings $270/mo = $3,240/year. That money buys: a fresh photoshoot for catalog, 6 months of content marketing, or just goes to margin.

Relevance: 92.7% vs 94%

Honestly: on our internal benchmark (100 queries on test OpenCart stores 2-30k SKU, top-3 manual review methodology) Klevu shows higher relevance — approximately 94% top-3 vs our 92.7%. Difference ~1.3 p.p. The 94% Klevu number is an approximate market leader indicator — they don't publish public per-store production benchmarks. Our 92.7% is actual measurement on isklad.com.ua. Where does the 1.3 p.p. gap come from?

• Klevu has a recommendations engine that incorporates similar buyer behavior during search (collaborative filtering). AI Search doesn't have this yet.
• Klevu trains its own model on e-commerce data from thousands of stores. Our model (multilingual-e5-large-instruct) is open-source general-purpose, not e-commerce specific.
• Klevu has deeper merchandising — A/B tests rankings for specific queries.

Is $270/mo worth +1.3 p.p. relevance? If your AOV is $50 and you do 200 transactions/mo ($10k revenue), 1.3% improvement = +$130/mo. Klevu charges $270+ — net negative for unit economics.

If AOV is $500 and 1000 transactions ($500k/mo), 1.3% = +$6,500/mo. Klevu pays for itself in a day. Choice obviously favors Klevu here.

Faceted filters

In Klevu, faceted filters are a separate product called Klevu Smart Category. Often enabled for Pro/Enterprise tiers or as add-on.

In AI Search v1.0.5, faceted filters are included in every plan. Work both on category pages and the search page (where standard OpenCart filter is missing entirely). Features:

• AJAX mode: switching filters without page reload
• Native HTML5 dual-range slider for price
• Per-group lockup: pick 2 colors → other colors visible with actual counts, while other groups (size, brand) narrow down
• URL-state: ?ai_f[category]=1,2,3&ai_f[price]=100-500 — share-friendly
• Event ai_filters_applied — for GA4 / dataLayer

OpenCart-native vs JS-overlay

This is an invisible but important criterion. Klevu is a universal SaaS platform — supports Shopify, Magento, BigCommerce, OpenCart, and a dozen others. OpenCart integration is JS-overlay over the standard search: at submit, JavaScript intercepts the request, sends to Klevu API, draws own UI over your store.

This means:

• Result design is Klevu design, not your theme (can be customized via their API, but limited)
• OpenCart's internal routes and templates aren't used
• SEO for search pages is limited (JS-rendered content)

AI Search works through OpenCart event hooks: catalog/controller/product/search/before. Replaces only the list of product IDs OpenCart returns. Everything else — standard OpenCart: your theme, your twig, your sort/limit/pagination, your SEO. No JS on frontend (optional AJAX mode only for filters).

Where Klevu still wins

Honest list of situations where we'd recommend Klevu over AI Search. Catalog size isn't the criterion — we run on production stores with 30,000+ SKU just fine (200ms, 92.7% relevance). It's about other things:

1. Multi-store / multi-brand with unified merchandising. Klevu keeps rules in one dashboard.
2. E-commerce / merchandising team of 3+ people. Klevu has RBAC and campaign workflows.
3. Need full BI search analytics. Klevu provides search dashboards with retention, repeat-search, conversion. AI Search shows top queries, zero-result rate, CTR — without advanced cohort analysis.
4. Recommendations engine critical for UX. Klevu has collaborative filtering out of the box. In AI Search recommendations are roadmap (Q3 2026).
5. English-speaking US/UK market with narrow category (apparel, electronics). Klevu is trained on this domain.
6. Ready to invest $300-1000+/mo with annual contract + 2-7 days onboarding.

Who to pick

Try AI Search free here — 5-minute install, up to 200 SKU free. If you don't like it — uninstalls in 5 minutes. Zero risk.

FAQ

Why is Klevu better on English electronics, AI Search on CIS stores?

Training data. Klevu is trained mostly on US/UK e-commerce — electronics, apparel, beauty in English. multilingual-e5-large is multilingual-first, trained on 100+ languages in parallel. AI Search works equally well on Ukrainian/Russian/Polish as on English; Klevu degrades.

Can I migrate from Klevu to AI Search without data loss?

Yes. AI Search doesn't depend on Klevu's index history — starts from scratch, reindexes your catalog in 30-90 seconds. You can disable Klevu after 1-2 weeks of parallel testing.

What if I have 15k SKU — will AI Search Pro be enough?

Yes. Pro tier ($79/mo) covers up to 50,000 SKU. For larger volumes — Enterprise $199/mo (unlimited). Tested on catalogs up to 80k SKU. For 100k+ contact us — we'll discuss dedicated GPU.

Will AI Search have a recommendations engine?

Roadmap Q3 2026. Meanwhile use OpenCart's standard "Related Products" or third-party modules.

What if I'm already on Klevu and it works?

Don't fix what isn't broken — if ROI justifies it, don't switch. If you think "expensive but scary to leave" — install AI Search Free on a dev copy and test 1-2 weeks. If relevance is comparable — savings justify the move.