Your AI co-pilot to win your fantasy league.
Fourth & AI sets your optimal lineup, grades every trade, guides your draft, and writes your weekly scouting report — connected to the platform you already play on.
Everything a great manager does — automated
A statistical projection engine does the math; Claude explains every call in plain English.
Ask Fourth & AI
A conversational analyst that answers anything about your team, a player, a matchup, a trade, or a draft pick — grounded in real stats and live news, with the numbers behind every take. It's like texting a fantasy expert who's actually read your roster.
Lineup Optimizer
Projects every player on your roster using recent form, matchup difficulty, and injury status — then sets the highest-scoring legal lineup and flags every start/sit swap.
Trade Analyzer
Value-over-replacement math grades any deal in seconds. Get a fairness score, a clear accept / decline / counter verdict, and the reasoning behind it.
Draft Assistant
Connects to your Sleeper or ESPN league and drafts to its exact settings — your team count and starting slots tune every pick. Live, pick-by-pick value (VORP + tiers) weighed against your roster needs, and it keeps your bye weeks balanced so one week can't sink you.
Weekly Analysis
A personalized scouting report each week: win probability, the decisions that matter, and the top waiver-wire targets to grab before your league-mates do.
Simple, seasonal pricing
Cancel anytime. Every plan starts with the full demo — no card required.
Rookie
- ✓1 connected league
- ✓Weekly optimal lineup
- ✓Basic start/sit calls
- ✓Demo league to explore everything
Pro
- ✓Up to 5 connected leagues
- ✓Trade Analyzer + counter-offers
- ✓Full draft assistant
- ✓Claude-written weekly reports
- ✓Waiver-wire targets
Dynasty
- ✓Unlimited leagues
- ✓Rest-of-season trade modeling
- ✓Keeper & dynasty valuations
- ✓Priority projections refresh
- ✓Everything in Pro