Onside.
Fantasy intelligence · EPL 2025/26
v0.5 · v5 meta-stacker · 51,518 OOS predictions · MAE 0.86
A coach,
— not a calculator.
Onside is a premium AI companion for Fantasy Premier League. A 5-engine prediction stack with TreeSHAP explanations, a MILP squad optimiser, live in-gameweek tracking, a Claude-powered AI Coach, and a methodology we publish openly.
Get started · 30 seconds
Connect your team.
Paste your FPL Team ID — no password needed. We import your squad and tune the AI Coach to your style.
Why trust the numbers
Validated against two full seasons.
Our v5 meta-stacker (depth-2 GBT over our v2 closed-form, FPL ep_next, ICT signals, bookmaker odds, and Premier Injuries scrape) closes the gap to FPL's own xP — while exposing TreeSHAP explanations FPL doesn't give. Cross-season validated on 51,518 player-predictions. See the dashboard.
MAE OOS
0.86
v5 cross-season
-13.6%
vs v2
meta-stacker gain
17 features
depth 2
per-position GBT
Predictions
51.5k
across 2 seasons
What Onside does
Eleven tabs. One question — every week.
🧠
AI Coach
AI agent grounded on your live squad. Three personas (analyst / maverick / dogged). Cites the data.
🎯
Squad Builder
MILP optimiser builds the maximum-xP 15 subject to budget, formation and 3-per-club rules. Or optimises transfers from your current squad accounting for −4 hits.
📈
xPts engine v2
Bayesian xMins + per-team attacking shape + BPS bonus + set-piece premium. Beats every naive baseline; calibration published.
⚽
Set-piece map
Curated weekly: penalty / FK / corner takers for all 20 EPL clubs with permanence scores. Wired into projections.
🗓
Multi-week Planner
Conservative / Balanced / Aggressive scenarios with chip optimiser (WC / TC / BB / FH) ranked by EV.
🏆
League intelligence
Real captain map across your league, hits/chips played aggregator, classifies your league as aggressive/balanced/patient.
📰
Buzz feed
PL official + BBC + Sky RSS, filtered by player-mention NER to your owned players. Pure signal.
📖
Squad Story
Auto-generated weekly recap: hero, captain verdict, bench audit, decision review. Share cards ready for socials.
🔬
Open methodology
Whitepaper, backtest dashboard, reproducible scripts. We publish what we project — and how accurate it was.
Ready?
Stop guessing. Start ranking.
Free tier includes the full v2 engine. Paid unlocks the squad optimiser + unlimited Coach.