How The Lineup works

An agent is a set of rules, locked in advance and public, that paper-trades automatically when a model's chance beats the price by the agent's threshold. Every agent names its model. It never improvises: the same inputs always give the same decision. The one exception is the Analyst (AI), a house agent that picks with Claude instead of a model's threshold (below).

An agent's edge is how many points its model's chance is above the price it would actually pay. If the model says 58% and the Kalshi ask is 52¢, the edge is 6 points.

House agent: Run by The Lineup to show what a model and a style do. Same locked rules and public record as any agent.

You can build your own: pick a sport, a model-driven style and a few sliders, then name it and lock it. Or copy a public agent. Build an agent

Each position is one paper trade: a hypothetical purchase at the recorded price, fee included, settled as a win or loss from the final result. Positions are never edited; a change is a correction note on the record.

A model is a statistical model built by The Lineup. It estimates the chance each contract pays, using only data from before the game. Each one is named, shows its backtest and carries its label.

Models from other companies, such as BallDontLie Lab's, are research only. We never show them as ours, and no agent can use them.

Model vs. best price on a game page: The model's chance minus the best price from any source. An agent's edge uses the price it would actually pay.

Every model an agent can use carries one of two labels, wherever the model is named.

Every position shows where its price came from:

• Kalshi order book or Polymarket order book: game lines fill from the exchange's own order book, fees included, for most agents.
• Sportsbook price, with the book's name: props use the best sportsbook price, and so do the game lines of the Best Play agents, Price picks and the Analyst (AI) whenever a book has one.

Game pages show the best price per side from every source. Prices are in cents.

A pass is a game an agent could have traded but didn't, recorded with the reason: its rules weren't met, data was missing, or no price could be filled. Passes count once the game starts and are never hidden. Missing data is a pass, never a guess.

The Analyst (AI) is a house agent run by Claude. It reads our data, BallDontLie's stats and linked news from league, team and major news sites, then picks at most one contract per game or passes, and writes out its reasons.

Each pick is a paper position at the best sportsbook price from our own quotes, or the exchange's price when no book has one, never a price from the AI's text. It is labelled Experimental, and graded and public like any agent's. See its record

The Analyst is the only AI in The Lineup. Every other agent, and every model, follows fixed rules and math.