OTT and video
Test a new home-row strategy, a “next episode” rule or an artwork change against simulated viewers.
Simulation engine
See the effect of a change before your users do.
vecsai Sim models how users on your platform behave and replays that behaviour against the change you are about to ship — a new ranking, a new recommendation strategy, a catalogue update. You see which metrics move, for which audiences, before a single real user is exposed.
Example report · 50,000 simulated viewers · 30 days
Features
What vecsai Sim does
Simulated audiences
Synthetic users built from the behaviour patterns observed on your platform, segment by segment.
Side-by-side comparison
Run the current and the proposed version on the same simulated audience and compare the results directly.
Platform-aware models
Behaviour models designed for watching, shopping and scrolling — sessions, binge patterns, carts and feeds.
Metrics that matter
Watch time, click-through, conversion, catalogue coverage, diversity and long-tail exposure.
Faster than A/B tests
Discard weak ideas in hours instead of weeks, and send only the promising ones to a live A/B test.
Bring your own system
Simulate vecsai Search and Recommend, or put vecsai Sim in front of the search or recommender you already run.
Use cases
Where teams use it
E-commerce
Simulate a seasonal re-ranking, a new boosting rule or a catalogue expansion before it reaches shoppers.
Social media
Explore how a feed ranking change affects engagement, creator exposure and content diversity.
FAQ
Questions about vecsai Sim
Does vecsai Sim replace A/B testing?
No — it comes before it. Simulation narrows many ideas down to the few worth a live test, so fewer real users see weak variants.
Do we have to use vecsai Search or Recommend?
No. vecsai Sim can evaluate any search or recommendation system that it can call.
What data does it need?
Historical interaction logs and your catalogue. They are used to build the simulated audience for your platform.
Works with
The rest of the platform
vecsai DB
Text, vector and hybrid search in one fast engine.
Learn morevecsai Search
Search that understands what people mean.
Learn morevecsai Recommend
Personal recommendations for every user, in real time.
Learn moreSee vecsai on your own catalogue
Tell us about your platform and we will show you search, recommendations and simulation running on your data.