Nosto vs Valen: differences and how to choose
Nosto and Valen compared: a personalization and product discovery platform next to an agentic storefront. Practical criteria to choose.
What Nosto is and which category it belongs to
Nosto is a personalization and product discovery platform for ecommerce. Its official website and documentation describe a set of modules that work on the store's catalog and content: commerce search, category merchandising, product recommendations, content personalization and experimentation tools. Day-to-day work in Nosto revolves around campaigns, rules and segments that the ecommerce team sets up and measures over time. That places it in the personalization suite family: tools built for teams that want to control what each group of visitors sees in specific places on the site.
What Valen is
Valen is the agentic storefront that adapts your ecommerce in real time to what each customer is looking for. Valen includes a behavior engine that each store can enable to take visitor behavior into account. Valen integrates into the store's Shopify theme and works on the real product page. Every Valen capability mentioned on this page has been demonstrated on a demo store.
Two approaches: a dedicated tool or a layer on the storefront
A personalization suite starts from the catalog and from rules: the team defines segments, placements and campaigns, then watches how visitors respond. This gives editorial control and suits organizations with people dedicated to merchandising. A storefront layer starts from the individual visitor's session instead: it reads browsing signals as they happen and changes what appears on the page at that moment. The two answer different questions. One asks "what do I show this segment?", the other asks "what does this person need right now?".
What Valen adapts along the buying journey
These are the capabilities closest to the personalization use case.
- A behavior-scoring engine adapts the store interface based on visitor browsing behavior.
- Valen records sessions and events from store visitors.
- Valen shows proactive nudges in response to a range of behavioral signals.
- Valen can offer a suggestion on its own initiative, without waiting for the shopper to ask.
- Valen offers product recommendations while keeping the catalog browsable.
- On the product page, Valen presents an upsell where both the copy and the suggested products are written by the model.
- A dedicated block invites shoppers to move up to a higher tier than the product they are considering.
- Valen keeps a registry of features that can be enabled separately for each store.
When Nosto may make sense
Nosto is a natural fit when the team wants one platform for search, category merchandising and recommendations, run through campaigns and rules. It also makes sense when structured experimentation is central: testing content variants and placements is part of how Nosto describes its own work. Teams with a mature merchandising process, where people curate collections and catalog priorities, will find this kind of suite consistent with how they already operate.
When Valen may make sense
Valen may make sense when you want the interface to react to the behavior of each session, with interventions triggered by browsing signals. It also fits if, on the product page, you want an upsell written by the model rather than a block configured by hand, as demonstrated on a demo store. With Valen, each feature is enabled store by store, so you can start with a single capability and add others later.
Can they be used together?
Yes, as long as responsibilities are clearly split. A sensible setup leaves search and category merchandising to Nosto, while on-page adaptation follows the individual visitor's session. In Valen, proactive interventions can be switched on one at a time, which helps avoid two systems pushing content into the same slot. Before going live, map every block on the product page and decide which tool owns it.
How to choose
- Who decides what the shopper sees: rules and campaigns curated by the team, or signals read during the session.
- Where you need to act: category pages and search, or the product page and moments of hesitation.
- Internal resources: a personalization suite pays off most with people dedicated to merchandising.
- Platform: Valen integrates into the store's Shopify theme, as demonstrated on a demo store.
- Test on your own catalog: ask both vendors for a demo with your products, not a sample catalog.
Frequently asked questions
Do Nosto and Valen do the same thing?
No. Nosto presents itself as a personalization and product discovery platform built on modules such as search, merchandising and recommendations. Valen is the agentic storefront that adapts your ecommerce in real time to what each customer is looking for.
Does Valen provide product recommendations?
Yes: Valen offers product recommendations while keeping the catalog browsable for the shopper, as demonstrated on a demo store.
Does Valen collect data on visitor behavior?
Valen records visitor sessions and events and uses behavior to adapt the interface, as demonstrated on a demo store.
Can I try Valen without replacing Nosto?
Valen features are enabled separately for each store, so you can try one of them alongside the tools you already use.