Is the word confiante the same in Brazilian and European Portuguese?

Yes

The spelling, meaning, and grammar of "confiante" are identical in both Brazilian and Continental Portuguese. The only difference lies in pronunciation:

• Brazilian Portuguese: Vowels are generally more open and clearly articulated. The unstressed final "e" is typically pronounced as a clear "/i/" (e.g., confianti).
• Continental Portuguese: Vowels are more closed and often reduced or almost silent. The unstressed final "e" is often pronounced as a very short, neutralized "/ə/" or may be almost imperceptible.

While the word itself is the same, a Portuguese person might use different syntax (such as using "de que" more strictly) or different pronouns (using tu instead of você) when using the word in a sentence.

Brazilian Portuguese Examples

1. Ele está muito confiante para a entrevista. (He is very confident for the interview.)
2. Eu estou confiante de que tudo vai dar certo. (I am confident that everything will work out.)
3. Ela é uma pessoa muito confiante. (She is a very confident person.)
4. Não seja tão confiante assim. (Don't be so confident like that.)
5. Ele parece muito confiante no projeto. (He seems very confident in the project.)

Continental Portuguese Examples

1. Ele está bastante confiante para a entrevista. (He is quite confident for the interview.)
2. Sinto-me confiante de que tudo irá correr bem. (I feel confident that everything will go well.)
3. Ela é uma pessoa muito confiante. (She is a very confident person.)
4. Não sejas demasiado confiante. (Don't be too confident.)
5. Ele mostra-se confiante no projeto. (He shows himself to be confident in the project.)