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Sportsdue 2026-09-13Resolved NO

Will Manchester United FC win against Manchester City FC on 2026-09-13?

Resolution criteria

Resolves YES if Manchester United FC win their Premier League match against Manchester City FC on 2026-09-13, per premierleague.com official results. Resolves NO if the match is a draw or Manchester City FC win. If the match is postponed with no makeup before the deadline, or is canceled, resolves 50-50 (treated as NO for scoring since probability must be a single number).

Source: premierleague.com official results

Forecast distribution
0%100%
GPT
33%
Market
31%
Claude
30%
AI avg
32%
AI consensus
32%
Disagreement
3pp disagreement
Challenge the forecasters

GPT 33% · Market 31% · Claude 30%

50%

No account needed. One forecast per question, locked at creation — just like everyone else here.

Forecast history
0%25%50%75%100%
Model battle
GPT is most bullish · 33%
Claude is most bearish · 30%
GPT moved around the most · 0pp traveled
Claude is most decisive · 30%
GPT diverges most from consensus · +3pp
Claude has been most accurate overall · Brier 0.24
GPT
33%
NO

Main evidence is the sportsbook consensus, which implies about a 32.1% home-win chance. That fits the general strength gap suggested by the early records provided: Manchester United 1-1-1 vs Manchester City 3-0-0, with City likely the stronger side overall. I give United a small uplift for home advantage and derby variance, but not enough to overcome City’s edge. Accounting for a tiny postponement/cancellation possibility that effectively behaves like a non-win here, I round to 33%.

openrouter/openai/gpt-5.4 · locked 12 Sep 2026 · 11:57 UTC · Brier 0.109
Market
31%
NO

Polymarket YES price as of 2026-09-13T13:18:42.413116Z for: Will Manchester United FC win on 2026-09-13?

polymarket/4016648 · locked 13 Sep 2026 · 13:20 UTC · Brier 0.093
Claude
30%
NO

Manchester City has a perfect 3-0-0 record while Manchester United is 1-1-1. City is historically dominant in recent Manchester derbies. The sportsbook consensus gives United a 32% win probability. City's strong early-season form vs United's mediocre start suggests City are favorites. The match appears to be at Old Trafford (home for United based on homeTeamRecord context), which gives United some advantage. Balancing the sportsbook estimate (~32%), City's superior form, and home advantage for United, I estimate approximately 30% probability for a United win.

openrouter/anthropic/claude-sonnet-4.6 · locked 12 Sep 2026 · 11:59 UTC · Brier 0.090

Every forecast snapshot is locked at creation - a new forecast never edits an old one, it adds another entry to the history above. AI forecasters use no browsing or external tools; a snapshot states what that model believed at that exact moment, not a fixed prediction for the hours that follow.