Is it known that $\textbf{BPP} \subseteq \textbf{P}^{\textbf{NP}}$?

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    $\begingroup$ No, it’s not known. However, $\mathrm{BPP\subseteq MA\subseteq S_2P\subseteq ZPP^{NP}}$. $\endgroup$ – Emil Jeřábek Aug 8 '18 at 11:31
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    $\begingroup$ Looks like an answer to me. $\endgroup$ – Auberon Aug 10 '18 at 8:39

Heller gives a relativized world where $BPP = EXP^{NP}$ which sits far outside of $P^{NP}$. Showing $BPP \neq EXP^{NP}$ unconditionally would in itself be considered a major breakthrough in derandomization.


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