
The infrastructure modules behind modern commerce media: platform, engine and intelligence, plus the modules and capabilities that run on them.
Explore the core platformLaunch a retail media network, connect brands and agencies, automate operations and power discovery, all on one commerce platform.
Explore all solutionsEverything your engineering team needs to build with Topsort: API references, SDKs, integration guides and live platform status.

T-Brain is Topsort's commerce-specific foundation model, built from intelligence developed across billions of commerce decisions. Its first model, Theo, brings shared intelligence to search, retrieval, ranking, recommendations, advertising, and agentic commerce.
T-Brain brings commerce-specific intelligence to the decisions behind modern commerce, from understanding shopper intent and product relationships to predicting outcomes and improving search, recommendations, and advertising.
Commerce-specific representations of products, queries, and shoppers that help the model understand relationships and intent.
Commerce-specific AI models that understand shopper intent and product relevance beyond keyword matching.
Commerce intelligence delivered in under 30ms, enabling real-time predictions and decisions across commerce experiences.
Learns from commerce signals and outcomes to continuously improve relevance, predictions, and decision-making.
One commerce intelligence foundation across search, retrieval, ranking, recommendations, advertising, and agentic commerce.
Bring commerce-specific intelligence into existing systems and experiences through APIs.
{
"auctions": [{
"type": "listings",
"slots": 3,
"products": { "ids": ["p-12", "p-48"] }
}]
}Instead of separate AI models making decisions independently, T-Brain provides a shared intelligence foundation for product discovery, recommendations, advertising, and agentic commerce.
Learns from products, queries, shopper behavior and transactions.
Uses real commerce signals to predict relevance and likely performance.
Ranks and selects the best outcome with low latency inference.
Every click, purchase and outcome improves the next decision.
Built on intelligence developed across billions of commerce decisions, T-Brain brings commerce-specific understanding to the systems that power modern commerce, helping businesses make smarter decisions across the shopper journey.
Whether you are comparing vendors or weighing an internal build, these are the questions that decide the outcome.
Every step feeds the next, so relevance keeps improving as the network runs.
Learns from products, queries, shopper behavior and transactions.
Uses real commerce signals to predict relevance and likely performance.
Ranks and selects the best outcome with low latency inference.
Every click, purchase and outcome improves the next decision.
Take your ad network beyond sponsored listings. Connect offsite traffic, store signals, catalog data and search under one platform.
Bring your surfaces, current stack and timeline. We will map the fastest safe path to production.
The rest of the Topsort system, designed to work together as one.
Ad infrastructure matched to your business model.