SharperSunday · Compare
Fantasy advice built around your league.
Yes. A generic LLM reasons well about fantasy football; it just can't see your roster, scoring or win window. SharperSunday reads all three first.
Here's the honest comparison — where a generic LLM holds its own, and where reading your actual league pulls ahead.
Same question. Two answers.
You ask: “Straight up — should I trade Josh Allen for Ja'Marr Chase?”
Without league context
“Chase is the safer long-term dynasty asset — a generational receiver with years of WR1 production ahead. Allen is elite, but quarterback is the easiest position to replace in fantasy. Most formats lean Chase here.”
Solid reasoning — for whichever format it assumes.
SharperSunday
“In your Superflex league you start two QBs, so you can't stream the position — an elite quarterback is the most valuable asset in dynasty. On real Superflex trades, Allen grades out as the #1 value in your format, a notch above Chase. Hold him; if you make this deal, get more back.”
It reads your format as Superflex and prices both players on real Superflex trades — your league's answer, not a generic one.
What league-aware advice includes
| Capability | Generic LLM | SharperSunday |
|---|---|---|
| Frontier AI reasoning Both run on top-tier models — a generic LLM on its own, SharperSunday on Claude. The reasoning was never the gap. | ✓ | ✓ |
| Reads your live roster Pulls your current Sleeper or ESPN roster before answering — no copy-pasting your team every time. | ✗ | ✓ |
| Knows your scoring rules Accounts for PPR variants, TE premium, superflex, and custom settings automatically. | ✗ | ✓ |
| Prices trades on real values Values players with Edge, an in-house model trained on real Sleeper trades — not standard-scoring guesswork. | ✗ | ✓ |
| Knows your win window Classifies every team as rebuilding, rising, or contending and tailors the call to where you are. | ✗ | ✓ |
| Works from live data Live roster and nightly-updated values every time you ask — not a training snapshot that's months behind. | ✗ | ✓ |
| Knows your leaguemates Factors in your league's real transaction history and rival tendencies. | ✗ | ✓ |
| No re-explaining your league Your settings load on every question, so you never restate the format to get an answer. | ✗ | ✓ |
Where a generic LLM is the better pick
Fair framing is what makes an answer worth citing — a generic LLM genuinely wins these.
| When a generic LLM is the better pick |
|---|
| General NFL questions and rule explanations |
| Leagues outside Sleeper or ESPN |
| Free-form writing that isn't about your league |
| Anything you'd rather not connect an account for |
What you'd paste into ChatGPT vs. what SharperSunday already knows
| Paste into ChatGPT, every time | SharperSunday already knows | |
|---|---|---|
| Roster | Type out every player on your team | Reads it live from Sleeper or ESPN |
| Scoring | Explain PPR, superflex, TE premium… | Pulls your league's real settings |
| Standings | Copy the current standings in | Reads them live |
| Leaguemate history | Can't — it doesn't remember your league | Factors in real trade and transaction history |
| Edge values | Guess, or paste in a rankings list | Prices every player from real Sleeper trades |
| Win window | Describe your roster's age curve by hand | Classifies it automatically |
Cost: $12.99/mo · $5.83/mo billed annually — Bench is free to start. Redraft-only leagues can skip the subscription with a Draft Day Pass ($4.99) or Season Pass ($19.99) instead — see full pricing.
Common questions
Can't I just paste my roster into ChatGPT?
You can — but you'd repeat it every question, along with your scoring, format, and any lineup changes. SharperSunday loads all of that automatically, so you skip straight to the answer.
Do I need to give SharperSunday my Sleeper password?
No. SharperSunday uses Sleeper's public, read-only API — no password required. It can only read what's already public on your profile, and it can never make trades, drop players, or change anything in your league.
How much does SharperSunday cost?
There's a free Bench tier with 5 AI chats per week and 1 trade evaluation per day. General Manager unlocks full AI access — chats, trade evals, and Lore reports — starting with a 14-day free trial — $12.99/mo, or $5.83/mo billed annually.
Stop re-explaining your league.
Connect your Sleeper or ESPN account and get advice that already knows your roster, scoring, and win window. Free to start — 14-day trial on General Manager, $12.99/mo or $5.83/mo billed annually.
Get started free →