Brasileirão Série A: AI prediction accuracy, October 2026

Independently scored outcomes vs. the AI's published predictions. Updated each generation run.

This month is still in progress — figures update daily.

Updated Oct 22, 2026

By Ivan Sirenko · Oct 22, 2026

66.7%

Correct outcomes

20 / 30

23.3%

Exact scores

7 / 30

Model comparison

Each AI model in our ensemble is scored independently against final results — the same matches, the same window.

Model	Predictions	Correct	Exact scores	Accuracy
claude-opus-5	30	20	7	66.7%
gpt-5	30	17	4	56.7%

Match by match

Date	Match	Predicted	Result	Verdict
Oct 7, 2026	CA Paranaense vs CA Mineiro	2:1	2:2	Miss
Oct 7, 2026	Botafogo FR vs CR Vasco da Gama	1:1	1:2	Miss
Oct 7, 2026	RB Bragantino vs Mirassol FC	1:1	1:1	Exact score
Oct 7, 2026	Cruzeiro EC vs São Paulo FC	2:1	2:0	Outcome
Oct 7, 2026	Fluminense FC vs Coritiba FBC	2:1	4:0	Outcome
Oct 7, 2026	SC Internacional vs SC Corinthians Paulista	2:1	2:1	Exact score
Oct 7, 2026	SE Palmeiras vs EC Bahia	2:1	1:0	Outcome
Oct 7, 2026	Clube do Remo vs Grêmio FBPA	1:1	1:1	Exact score
Oct 7, 2026	Santos FC vs CR Flamengo	1:2	2:2	Miss
Oct 7, 2026	EC Vitória vs Chapecoense AF	1:1	4:0	Miss
Oct 10, 2026	CR Vasco da Gama vs Clube do Remo	2:1	0:0	Miss
Oct 11, 2026	São Paulo FC vs EC Vitória	2:0	2:1	Outcome
Oct 11, 2026	CA Mineiro vs Santos FC	2:1	2:1	Exact score
Oct 11, 2026	CR Flamengo vs Fluminense FC	2:1	1:0	Outcome
Oct 11, 2026	Grêmio FBPA vs SC Internacional	1:1	1:1	Exact score
Oct 11, 2026	SE Palmeiras vs SC Corinthians Paulista	2:0	4:1	Outcome
Oct 11, 2026	EC Bahia vs Mirassol FC	2:1	1:0	Outcome
Oct 12, 2026	Coritiba FBC vs Botafogo FR	1:1	1:1	Exact score
Oct 12, 2026	Chapecoense AF vs CA Paranaense	1:2	1:4	Outcome
Oct 13, 2026	RB Bragantino vs Cruzeiro EC	1:2	4:2	Miss
Oct 16, 2026	Mirassol FC vs SC Internacional	2:1	2:0	Outcome
Oct 17, 2026	Botafogo FR vs Chapecoense AF	1:1	1:0	Miss
Oct 17, 2026	CA Mineiro vs Coritiba FBC	2:1	1:0	Outcome
Oct 17, 2026	CA Paranaense vs SE Palmeiras	1:2	0:2	Outcome
Oct 18, 2026	São Paulo FC vs CR Vasco da Gama	2:1	1:0	Outcome
Oct 18, 2026	Fluminense FC vs Santos FC	2:1	1:2	Miss
Oct 18, 2026	Grêmio FBPA vs Cruzeiro EC	1:1	2:4	Miss
Oct 18, 2026	EC Bahia vs CR Flamengo	1:2	0:3	Outcome
Oct 18, 2026	Clube do Remo vs RB Bragantino	1:2	1:1	Miss
Oct 19, 2026	SC Corinthians Paulista vs EC Vitória	1:1	1:1	Exact score

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