diff --git a/apps/opik-frontend/src/components/pages-shared/experiments/useExperimentsGroupsAndFilters.ts b/apps/opik-frontend/src/components/pages-shared/experiments/useExperimentsGroupsAndFilters.ts
index 3688f691eb9..f2606bd26b3 100644
--- a/apps/opik-frontend/src/components/pages-shared/experiments/useExperimentsGroupsAndFilters.ts
+++ b/apps/opik-frontend/src/components/pages-shared/experiments/useExperimentsGroupsAndFilters.ts
@@ -14,7 +14,6 @@ import DatasetSelectBox from "@/components/pages-shared/experiments/DatasetSelec
 import ExperimentsPathsAutocomplete from "@/components/pages-shared/experiments/ExperimentsPathsAutocomplete/ExperimentsPathsAutocomplete";
 import { Filters } from "@/types/filters";
 import { GroupedExperiment } from "@/hooks/useGroupedExperimentsList";
-import { SORT_DIRECTION } from "@/types/sorting";
 
 export const FILTER_AND_GROUP_COLUMNS: ColumnData<GroupedExperiment>[] = [
   {
@@ -30,15 +29,7 @@ export const FILTER_AND_GROUP_COLUMNS: ColumnData<GroupedExperiment>[] = [
   },
 ];
 
-const DEFAULT_GROUPS: Groups = [
-  {
-    id: "default_groups",
-    field: "dataset_id",
-    type: COLUMN_TYPE.string,
-    direction: SORT_DIRECTION.ASC,
-    key: "",
-  },
-];
+const DEFAULT_GROUPS: Groups = [];
 
 export type UseExperimentsGroupsAndFiltersProps = {
   storageKeyPrefix: string;
diff --git a/apps/opik-frontend/src/components/pages/ExperimentsPage/ExperimentsPage.tsx b/apps/opik-frontend/src/components/pages/ExperimentsPage/ExperimentsPage.tsx
index 411d3cbe96b..13b602ce796 100644
--- a/apps/opik-frontend/src/components/pages/ExperimentsPage/ExperimentsPage.tsx
+++ b/apps/opik-frontend/src/components/pages/ExperimentsPage/ExperimentsPage.tsx
@@ -226,7 +226,9 @@ export const DEFAULT_COLUMNS: ColumnData<GroupedExperiment>[] = [
 ];
 
 export const DEFAULT_SELECTED_COLUMNS: string[] = [
+  COLUMN_DATASET_ID,
   "created_at",
+  "duration.p50",
   COLUMN_FEEDBACK_SCORES_ID,
   COLUMN_COMMENTS_ID,
 ];
@@ -399,18 +401,44 @@ const ExperimentsPage: React.FC = () => {
     [setGroupLimit],
   );
 
+  // Filter out dataset column when grouping by dataset
+  const availableColumns = useMemo(() => {
+    const isGroupingByDataset = groups.some(
+      (g) => g.field === COLUMN_DATASET_ID,
+    );
+    if (isGroupingByDataset) {
+      return DEFAULT_COLUMNS.filter((col) => col.id !== COLUMN_DATASET_ID);
+    }
+    return DEFAULT_COLUMNS;
+  }, [groups]);
+
   const chartsData = useMemo(() => {
     const groupsMap: Record<string, ChartData> = {};
 
-    // Handle no grouping case - create a single group with all visible experiments
+    // Handle no grouping case - group by dataset for charts
     const deepestExpandedGroups = !hasGroups
-      ? [
-          {
-            id: "visible_experiments",
-            name: "Visible experiments",
-            experiments,
-          },
-        ]
+      ? Object.entries(
+          experiments.reduce<Record<string, GroupedExperiment[]>>(
+            (acc, exp) => {
+              const datasetId = exp.dataset_id || "no_dataset";
+              if (!acc[datasetId]) {
+                acc[datasetId] = [];
+              }
+              acc[datasetId].push(exp);
+              return acc;
+            },
+            {},
+          ),
+        ).map(([datasetId, datasetExperiments]) => ({
+          id: datasetId,
+          name: [
+            {
+              label: "Dataset",
+              value: datasetExperiments[0]?.dataset_name || "Undefined",
+            },
+          ],
+          experiments: datasetExperiments,
+        }))
       : flattenGroups
           .filter(
             (group) =>
@@ -582,7 +610,7 @@ const ExperimentsPage: React.FC = () => {
             </Button>
           </TooltipWrapper>
           <ColumnsButton
-            columns={DEFAULT_COLUMNS}
+            columns={availableColumns}
             selectedColumns={selectedColumns}
             onSelectionChange={setSelectedColumns}
             order={columnsOrder}
diff --git a/apps/opik-frontend/src/components/pages/PromptPage/ExperimentsTab/ExperimentsTab.tsx b/apps/opik-frontend/src/components/pages/PromptPage/ExperimentsTab/ExperimentsTab.tsx
index e381c6058a3..4b83a434eb5 100644
--- a/apps/opik-frontend/src/components/pages/PromptPage/ExperimentsTab/ExperimentsTab.tsx
+++ b/apps/opik-frontend/src/components/pages/PromptPage/ExperimentsTab/ExperimentsTab.tsx
@@ -213,7 +213,11 @@ export const DEFAULT_COLUMNS: ColumnData<GroupedExperiment>[] = [
 
 export const MAX_EXPANDED_DEEPEST_GROUPS = 5;
 
-export const DEFAULT_SELECTED_COLUMNS: string[] = ["prompt", "created_at"];
+export const DEFAULT_SELECTED_COLUMNS: string[] = [
+  "prompt",
+  COLUMN_DATASET_ID,
+  "created_at",
+];
 
 interface ExperimentsTabProps {
   promptId: string;
@@ -354,6 +358,17 @@ const ExperimentsTab: React.FC<ExperimentsTabProps> = ({ promptId }) => {
     [setGroupLimit],
   );
 
+  // Filter out dataset column when grouping by dataset
+  const availableColumns = useMemo(() => {
+    const isGroupingByDataset = groups.some(
+      (g) => g.field === COLUMN_DATASET_ID,
+    );
+    if (isGroupingByDataset) {
+      return DEFAULT_COLUMNS.filter((col) => col.id !== COLUMN_DATASET_ID);
+    }
+    return DEFAULT_COLUMNS;
+  }, [groups]);
+
   if (isPending || isFeedbackScoresPending) {
     return <Loader />;
   }
@@ -390,7 +405,7 @@ const ExperimentsTab: React.FC<ExperimentsTabProps> = ({ promptId }) => {
           <ExperimentsActionsPanel experiments={selectedRows} />
           <Separator orientation="vertical" className="mx-2 h-4" />
           <ColumnsButton
-            columns={DEFAULT_COLUMNS}
+            columns={availableColumns}
             selectedColumns={selectedColumns}
             onSelectionChange={setSelectedColumns}
             order={columnsOrder}