diff --git a/src/libs/ReportUtils.ts b/src/libs/ReportUtils.ts
index b4dbce6adc138..8ecdf1fafd8f8 100644
--- a/src/libs/ReportUtils.ts
+++ b/src/libs/ReportUtils.ts
@@ -729,6 +729,7 @@ type OptimisticTaskReport = SetRequired<
     Pick<
         Report,
         | 'reportID'
+        | 'created'
         | 'reportName'
         | 'description'
         | 'ownerAccountID'
@@ -8559,6 +8560,7 @@ function buildOptimisticTaskReport(
 
     return {
         reportID: generateReportID(),
+        created: DateUtils.getDBTime(),
         reportName: getParsedComment(title ?? '', undefined, undefined, [...CONST.TASK_TITLE_DISABLED_RULES]),
         description: getParsedComment(description ?? '', {}),
         ownerAccountID,
diff --git a/src/libs/SearchQueryUtils.ts b/src/libs/SearchQueryUtils.ts
index f6762c0cabfa5..d748b07116e92 100644
--- a/src/libs/SearchQueryUtils.ts
+++ b/src/libs/SearchQueryUtils.ts
@@ -1,5 +1,6 @@
 import cloneDeep from 'lodash/cloneDeep';
-import type {OnyxCollection} from 'react-native-onyx';
+import Onyx from 'react-native-onyx';
+import type {OnyxCollection, OnyxUpdate} from 'react-native-onyx';
 import type {ValueOf} from 'type-fest';
 import type {LocaleContextProps, LocalizedTranslate} from '@components/LocaleContextProvider';
 import type {
@@ -1645,6 +1646,25 @@ function shouldSkipSuggestedSearchNavigation(queryJSON?: SearchQueryJSON) {
     return !!queryJSON.rawFilterList || hasKeywordFilter || hasContextFilter || hasInlineKeywordFilter || hasInlineContextFilter || isChatSearch;
 }
 
+/**
+ * Builds an optimistic Snapshot update to ensure offline data for Tasks and Chat messages appears in Search.
+ */
+function buildOptimisticSnapshotData(type: SearchDataTypes, data: Record<string, unknown>): OnyxUpdate<typeof ONYXKEYS.COLLECTION.SNAPSHOT> | undefined {
+    const searchQuery = buildCannedSearchQuery({type});
+    const searchQueryJSON = buildSearchQueryJSON(searchQuery);
+    if (!searchQueryJSON) {
+        return;
+    }
+    return {
+        onyxMethod: Onyx.METHOD.MERGE,
+        key: `${ONYXKEYS.COLLECTION.SNAPSHOT}${searchQueryJSON.hash}`,
+        value: {
+            // @ts-expect-error - will be solved in https://github.com/Expensify/App/issues/73830
+            data,
+        },
+    };
+}
+
 export {
     isSearchDatePreset,
     isFilterSupported,
@@ -1669,4 +1689,5 @@ export {
     getUserFriendlyValue,
     getUserFriendlyKey,
     shouldSkipSuggestedSearchNavigation,
+    buildOptimisticSnapshotData,
 };
diff --git a/src/libs/actions/Report/index.ts b/src/libs/actions/Report/index.ts
index ca315fcabdf48..036429eebb64c 100644
--- a/src/libs/actions/Report/index.ts
+++ b/src/libs/actions/Report/index.ts
@@ -160,7 +160,7 @@ import {
     isValidReportIDFromPath,
     prepareOnboardingOnyxData,
 } from '@libs/ReportUtils';
-import {getCurrentSearchQueryJSON} from '@libs/SearchQueryUtils';
+import {buildOptimisticSnapshotData, getCurrentSearchQueryJSON} from '@libs/SearchQueryUtils';
 import playSound, {SOUNDS} from '@libs/Sound';
 import {getAmount, getCurrency, hasValidModifiedAmount, isOnHold, shouldClearConvertedAmount} from '@libs/TransactionUtils';
 import addTrailingForwardSlash from '@libs/UrlUtils';
@@ -725,7 +725,9 @@ function addActions({
         parameters.pregeneratedResponse = pregeneratedResponseParams.pregeneratedResponse;
     }
 
-    const optimisticData: Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS | typeof ONYXKEYS.PERSONAL_DETAILS_LIST>> = [
+    const optimisticData: Array<
+        OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS | typeof ONYXKEYS.PERSONAL_DETAILS_LIST | typeof ONYXKEYS.COLLECTION.SNAPSHOT>
+    > = [
         {
             onyxMethod: Onyx.METHOD.MERGE,
             key: `${ONYXKEYS.COLLECTION.REPORT}${reportID}`,
@@ -738,6 +740,17 @@ function addActions({
         },
     ];
 
+    const snapshotDataToStore = {
+        [`${ONYXKEYS.COLLECTION.REPORT}${reportID}`]: optimisticReport,
+        [`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${reportID}`]: optimisticReportActions,
+    };
+    const optimisticSnapshotUpdate = buildOptimisticSnapshotData(CONST.SEARCH.DATA_TYPES.CHAT, snapshotDataToStore);
+
+    // We are pushing the optimistic report and report actions into the chat snapshot so that the newly sent message appears immediately in "Reports > Chats" while offline.
+    if (optimisticSnapshotUpdate) {
+        optimisticData.push(optimisticSnapshotUpdate);
+    }
+
     optimisticData.push(...getOptimisticDataForAncestors(ancestors, currentTime, CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD));
 
     const successReportActions: OnyxCollection<NullishDeep<ReportAction>> = {};
@@ -787,7 +800,7 @@ function addActions({
         failureReportActions[pregeneratedResponseParams.optimisticConciergeReportActionID] = null;
     }
 
-    const failureData: Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>> = [
+    const failureData: Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS | typeof ONYXKEYS.COLLECTION.SNAPSHOT>> = [
         {
             onyxMethod: Onyx.METHOD.MERGE,
             key: `${ONYXKEYS.COLLECTION.REPORT}${reportID}`,
diff --git a/src/libs/actions/ReportActions.ts b/src/libs/actions/ReportActions.ts
index 39529ea608844..acc723e47e79e 100644
--- a/src/libs/actions/ReportActions.ts
+++ b/src/libs/actions/ReportActions.ts
@@ -2,6 +2,7 @@ import type {OnyxCollection} from 'react-native-onyx';
 import Onyx from 'react-native-onyx';
 import {getLinkedTransactionID, getReportAction, getReportActionMessage, isCreatedTaskReportAction} from '@libs/ReportActionsUtils';
 import {getOriginalReportID} from '@libs/ReportUtils';
+import {buildOptimisticSnapshotData} from '@libs/SearchQueryUtils';
 import CONST from '@src/CONST';
 import ONYXKEYS from '@src/ONYXKEYS';
 import type * as OnyxTypes from '@src/types/onyx';
@@ -49,6 +50,27 @@ function clearReportActionErrors(reportID: string, reportAction: ReportAction, o
         if (taskReportID && isCreatedTaskReportAction(reportAction)) {
             deleteReport(taskReportID);
         }
+
+        // Clear the chat snapshot entry for the failed optimistic action so it disappears from Reports > Chats.
+        const snapshotDataToClear: Record<string, unknown> = {
+            [`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${originalReportID}`]: {
+                [reportAction.reportActionID]: null,
+            },
+        };
+        if (taskReportID && isCreatedTaskReportAction(reportAction)) {
+            // If this is a failed optimistic task-create action, also remove the task report snapshot data so it disappears from Reports > Task when the user dismiss the error.
+            snapshotDataToClear[`${ONYXKEYS.COLLECTION.REPORT}${taskReportID}`] = null;
+            snapshotDataToClear[`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${taskReportID}`] = null;
+        }
+
+        // Apply the same cleanup to snapshot hashes used by Reports > Chats and Reports > Task.
+        for (const type of [CONST.SEARCH.DATA_TYPES.CHAT, CONST.SEARCH.DATA_TYPES.TASK]) {
+            const snapshotUpdate = buildOptimisticSnapshotData(type, snapshotDataToClear);
+            if (!snapshotUpdate) {
+                continue;
+            }
+            Onyx.merge(snapshotUpdate.key, snapshotUpdate.value as OnyxTypes.SearchResults);
+        }
         return;
     }
 
diff --git a/src/libs/actions/Task.ts b/src/libs/actions/Task.ts
index e00ba5ea1f241..7ed7ed7f9d6dd 100644
--- a/src/libs/actions/Task.ts
+++ b/src/libs/actions/Task.ts
@@ -15,6 +15,7 @@ import * as OptionsListUtils from '@libs/OptionsListUtils';
 import * as PersonalDetailsUtils from '@libs/PersonalDetailsUtils';
 import * as ReportActionsUtils from '@libs/ReportActionsUtils';
 import * as ReportUtils from '@libs/ReportUtils';
+import {buildOptimisticSnapshotData} from '@libs/SearchQueryUtils';
 import playSound, {SOUNDS} from '@libs/Sound';
 import CONST from '@src/CONST';
 import ONYXKEYS from '@src/ONYXKEYS';
@@ -125,26 +126,32 @@ function createTaskAndNavigate(params: CreateTaskAndNavigateParams) {
         hasOutstandingChildTask: assigneeAccountID === currentUserAccountID ? true : parentReport?.hasOutstandingChildTask,
     };
 
+    const completeOptimisticTaskReport = {
+        ...optimisticTaskReport,
+        pendingFields: {
+            createChat: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
+            reportName: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
+            description: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
+            managerID: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
+        },
+    };
+
     // We're only setting onyx data for the task report here because it's possible for the parent report to not exist yet (if you're assigning a task to someone you haven't chatted with before)
     // So we don't want to set the parent report data until we've successfully created that chat report
     // FOR TASK REPORT
     const optimisticData: Array<
         OnyxUpdate<
-            typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_METADATA | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS | typeof ONYXKEYS.NVP_QUICK_ACTION_GLOBAL_CREATE
+            | typeof ONYXKEYS.COLLECTION.REPORT
+            | typeof ONYXKEYS.COLLECTION.REPORT_METADATA
+            | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS
+            | typeof ONYXKEYS.NVP_QUICK_ACTION_GLOBAL_CREATE
+            | typeof ONYXKEYS.COLLECTION.SNAPSHOT
         >
     > = [
         {
             onyxMethod: Onyx.METHOD.SET,
             key: `${ONYXKEYS.COLLECTION.REPORT}${optimisticTaskReport.reportID}`,
-            value: {
-                ...optimisticTaskReport,
-                pendingFields: {
-                    createChat: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
-                    reportName: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
-                    description: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
-                    managerID: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
-                },
-            },
+            value: completeOptimisticTaskReport,
         },
         {
             onyxMethod: Onyx.METHOD.MERGE,
@@ -160,6 +167,13 @@ function createTaskAndNavigate(params: CreateTaskAndNavigateParams) {
         },
     ];
 
+    // We need the personal details of the task creator and assignee so that the "From" and "Assignee" columns wil be rendered in "Reports > Task" while offline.
+    const personalDetailsList = PersonalDetailsUtils.createPersonalDetailsLookupByAccountID(
+        PersonalDetailsUtils.getPersonalDetailsByIDs({
+            accountIDs: [currentUserAccountID, assigneeAccountID],
+        }),
+    );
+
     // FOR TASK REPORT
     const successData: Array<
         OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_METADATA | typeof ONYXKEYS.PERSONAL_DETAILS_LIST | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>
@@ -192,21 +206,18 @@ function createTaskAndNavigate(params: CreateTaskAndNavigateParams) {
         },
     ];
 
-    // FOR TASK REPORT
+    // We intentionally aren't deleting the optimistic
+    // task report/action on API failure so the task stays visible until the user dismiss the
+    // error from chat.
     const failureData: Array<
-        OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS | typeof ONYXKEYS.PERSONAL_DETAILS_LIST | typeof ONYXKEYS.NVP_QUICK_ACTION_GLOBAL_CREATE>
-    > = [
-        {
-            onyxMethod: Onyx.METHOD.MERGE,
-            key: `${ONYXKEYS.COLLECTION.REPORT}${optimisticTaskReport.reportID}`,
-            value: null,
-        },
-        {
-            onyxMethod: Onyx.METHOD.MERGE,
-            key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${optimisticTaskReport.reportID}`,
-            value: null,
-        },
-    ];
+        OnyxUpdate<
+            | typeof ONYXKEYS.COLLECTION.REPORT
+            | typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS
+            | typeof ONYXKEYS.PERSONAL_DETAILS_LIST
+            | typeof ONYXKEYS.NVP_QUICK_ACTION_GLOBAL_CREATE
+            | typeof ONYXKEYS.COLLECTION.SNAPSHOT
+        >
+    > = [];
 
     if (assigneeChatReport && assigneeChatReportID) {
         assigneeChatReportOnyxData = ReportUtils.getTaskAssigneeChatOnyxData(
@@ -239,6 +250,31 @@ function createTaskAndNavigate(params: CreateTaskAndNavigateParams) {
         },
     );
 
+    const searchDataTypes = [CONST.SEARCH.DATA_TYPES.CHAT, CONST.SEARCH.DATA_TYPES.TASK];
+
+    const snapshotDataToStore = {
+        [`${ONYXKEYS.COLLECTION.REPORT}${optimisticTaskReport.reportID}`]: {
+            ...completeOptimisticTaskReport,
+            accountID: currentUserAccountID,
+        },
+        [`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${optimisticTaskReport.reportID}`]: {
+            [optimisticTaskCreatedAction.reportActionID]: optimisticTaskCreatedAction as OnyxTypes.ReportAction,
+        },
+        [`${ONYXKEYS.COLLECTION.REPORT}${parentReportID}`]: optimisticParentReport,
+        [`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${parentReportID}`]: {
+            [optimisticAddCommentReport.reportAction.reportActionID]: optimisticAddCommentReport.reportAction as OnyxTypes.ReportAction,
+        },
+        [ONYXKEYS.PERSONAL_DETAILS_LIST]: personalDetailsList,
+    };
+
+    // We push the optimistic task data into chat and task snapshot hashes so it appears immediately in "Reports > Chats" and "Reports > Task" while offline.
+    for (const type of searchDataTypes) {
+        const optimisticSnapshotUpdate = buildOptimisticSnapshotData(type, snapshotDataToStore);
+        if (optimisticSnapshotUpdate) {
+            optimisticData.push(optimisticSnapshotUpdate);
+        }
+    }
+
     const shouldUpdateNotificationPreference = !isEmptyObject(parentReport) && ReportUtils.isHiddenForCurrentUser(parentReport);
     if (shouldUpdateNotificationPreference) {
         optimisticData.push({
diff --git a/tests/actions/ReportTest.ts b/tests/actions/ReportTest.ts
index 3a6edbf75ecde..d6f78b5990374 100644
--- a/tests/actions/ReportTest.ts
+++ b/tests/actions/ReportTest.ts
@@ -27,6 +27,7 @@ import DateUtils from '@src/libs/DateUtils';
 import Log from '@src/libs/Log';
 import * as SequentialQueue from '@src/libs/Network/SequentialQueue';
 import * as ReportUtils from '@src/libs/ReportUtils';
+import type * as SearchQueryUtilsType from '@src/libs/SearchQueryUtils';
 import ONYXKEYS from '@src/ONYXKEYS';
 import ROUTES from '@src/ROUTES';
 import type * as OnyxTypes from '@src/types/onyx';
@@ -73,15 +74,19 @@ jest.mock('@libs/ReportUtils', () => {
 /* eslint-enable @typescript-eslint/no-unsafe-assignment */
 
 const currentHash = 12345;
-jest.mock('@src/libs/SearchQueryUtils', () => ({
-    getCurrentSearchQueryJSON: jest.fn().mockImplementation(() => ({
-        hash: currentHash,
-        query: 'test',
-        type: 'expense',
-        status: '',
-        flatFilters: [],
-    })),
-}));
+jest.mock('@src/libs/SearchQueryUtils', () => {
+    const originalSearchQueryModule = jest.requireActual<typeof SearchQueryUtilsType>('@src/libs/SearchQueryUtils');
+    return {
+        ...originalSearchQueryModule,
+        getCurrentSearchQueryJSON: jest.fn().mockImplementation(() => ({
+            hash: currentHash,
+            query: 'test',
+            type: 'expense',
+            status: '',
+            flatFilters: [],
+        })),
+    };
+});
 
 const UTC = 'UTC';
 jest.mock('@src/libs/actions/Report', () => {