"We have all the technical attributes and we are meeting all of FIFA's demands," said Federal District governor Rogerio Rosso on his administration's website.
"We are going to keep working to bring the opening of the tournament to Brasilia."
Earlier this month, local organising committee president Ricardo Teixeira said he had "absolute certainty" Sao Paulo would host the opening match. However, Rosso published a letter sent by FIFA secretary general Jerome Valcke.
"Regarding the selection of the opening match venue, we certainly appreciate your concerns," it said. "Please be assured that no final decisions have been taken.
"It is worth clarifying, however, that the decision of the opening match venue will ultimately be taken by the local organising committee (LOC).
"We are confident that all key considerations will be factored before a final decision is reached."
Confusion has surrounded Sao Paulo's participation in the World Cup since June when the LOC dropped plans to use the Morumbi stadium after the city failed to provide financial guarantees for the cost of its renovation.
Brazil was elected unopposed in 2007 to host the tournament earmarked for South America by FIFA under a short-lived rotation system which also took this year's World Cup to Africa.
This month's Brazilian Grand Prix in Sao Paulo was marred by attempted armed attacks on world champion Jenson Button and a group of team engineers.
