<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0407</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-06-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001844392</issuerCik>
        <issuerName>Marpai, Inc.</issuerName>
        <issuerTradingSymbol>MRAI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001514678</rptOwnerCik>
            <rptOwnerName>Gonzalez Edmundo</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MARPAI, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>5701 EAST HILLSBROUGH AVE., SUITE 1417</rptOwnerStreet2>
            <rptOwnerCity>TAMPA</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33610-5428</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-06-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.5051</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>888189</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>313110</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the Agreement Relating to Voting Power between Co-Founders of Marpai, Inc. and Grant of a Power of Attorney and Proxy, dated June 28, 2021 (the &quot;Power of Attorney and Proxy&quot;), (i) HillCour Investment Fund, LLC and WellEnterprises USA, LLC (together, the &quot;HillCour Founding Group&quot;) and (ii) Eli David, Yaron Eitan, Edmundo Gonzalez and Grays West Ventures, LLC (collectively, the &quot;Grays Founding Group&quot;), share voting power over a total of 7,826,531 shares of Marpai, Inc.'s Class A common stock with respect to certain specified matters. As a result of the Power of Attorney and Proxy, the HillCour Founding Group and Grays Founding Group, of which the reporting person is a member, are deemed to be a &quot;group&quot; under Rule 13d-5(d) of the Exchange Act.</footnote>
        <footnote id="F2">Held by Grays West Ventures LLC (&quot;Grays West&quot;), of which Mr. Gonzalez is the sole member, and has the sole voting and dispositive power over the shares held by Grays West.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Edmundo Gonzalez</signatureName>
        <signatureDate>2023-06-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
