The Herd projects every player from usage, opportunity share, team environment and matchup. The Seer turns those numbers into start/sit calls, waiver targets and trade verdicts you can actually read.
Football now. Every fantasy sport next. Building on it? Read the API docs
ATL's neutral pass rate dropped 6 points in camp and TB allowed the 4th-most RB receptions last year. Volume is the projection; the receiving work is the ceiling.
A component model: team volume × player share × efficiency, scored under your league's rules. Deterministic. No language model ever guesses a stat line.
It ranks and reasons only within the candidates the model produced, and every answer says which model it came from.
Projections are scored against what actually happened, alongside ESPN, Yahoo and FantasyPros consensus. Published every Tuesday.
Syncs with Sleeper. ESPN and Yahoo next.
| Player | Pos | Team | Proj | Floor | Ceiling | Matchup |
|---|---|---|---|---|---|---|
| Trevor Lawrence | QB | JAX | 22.9 | 15.1 | 31.4 | |
| Christian McCaffrey | RB | SF | 22.3 | 13.8 | 30.9 | |
| Derrick Henry | RB | BAL | 20.1 | 11.9 | 28.3 | |
| Chase Brown | RB | CIN | 19.7 | 11.4 | 27.6 | |
| Joe Burrow | QB | CIN | 19.4 | 12.6 | 27.0 |
Component model: team volume × player share × efficiency, scored under your league's rules. Vegas lines are one input among many — we never show odds or recommend wagers.
Projections, analytics, matchups, injuries and waivers over REST at api.fantasyxai.io/v1. The reasoning tools — draft, compare, roster advice, trade — as MCP tools at mcp.fantasyxai.io.
Also usable directly inside Claude and ChatGPT via MCP.
# one call, one player, this week curl -H "Authorization: Bearer gk_…" \ https://api.fantasyxai.io/v1/matchups/player?player=bijan-robinson { "player": "Bijan Robinson", "week": 1, "proj": 19.4, "floor": 11.2, "ceiling": 27.8, "matchup_score": 7.9, "stats": { "carries": 17.2, "targets": 5.1, "rec_yds": 38 }, "model_meta": { "model": "herd-v2", "scoring": "ppr" } }
Mean absolute error by position, PPR, on the 2025 season with the model trained on 2022–24 only. From Week 1 we post the same numbers weekly — ours next to ESPN, Yahoo and FantasyPros consensus.
Every plan is custom to your exact league settings. Try the Seer free, no card required. Cancel anytime.
| What you get | Free | Plus | Pro |
|---|---|---|---|
| League sync (Sleeper now; ESPN, Yahoo next) | 1 league | 1 league | Unlimited |
| Rest-of-season rankings and tiers | ✓ | ✓ | ✓ |
| Player and team analytics | ✓ | ✓ | ✓ |
| Weekly projections, floor and ceiling, matchup score | — | ✓ | ✓ |
| Start/sit, waivers with FAAB, trade analyzer, IR manager | — | ✓ | ✓ |
| The Seer | 5 questions | Unlimited | Unlimited |
| Alerts: inactives, depth-chart and injury news | — | ✓ | Priority |
| Other sports (basketball, baseball, hockey) as they launch | — | Football only | All |
Launch pricing. Season prices rise after Week 4; a season pass bought now stays at the price you paid. Not affiliated with any sportsbook and we don't take their money — the price on the page is the price.
No. Fantasy × AI never recommends a wager, never shows odds or props, and never links to a sportsbook. Betting lines appear only as neutral inputs to the projection model, the same way snap counts do.
An account, one synced Sleeper league, rest-of-season rankings and tiers, the analytics pages, and five questions for the Seer. No card, no trial clock. Weekly projections and the in-season tools are what you pay for.
Yes, from your account page, in one tap. Monthly plans stop at the end of the month you paid for. Season passes cover the whole season including playoffs.
Football this season. Basketball, baseball and hockey are next, on the same engine.
Sleeper today. ESPN and Yahoo are next. You can also paste a roster and get everything except automatic sync.
Consensus averages opinions. The Herd builds a stat line — carries, targets, yards, touchdowns — for every player from usage and matchup data, then scores it under your rules. When it disagrees with consensus, the Seer tells you why, and every week we publish who was right.
Installs from the browser on iPhone and Android, works offline, and sends alerts. Three of the core screens: