diff --git a/changelog/79.trivial.md b/changelog/79.trivial.md
new file mode 100644
index 00000000..b1061683
--- /dev/null
+++ b/changelog/79.trivial.md
@@ -0,0 +1,2 @@
+Updates zod to v4 and drops the `@tanstack/zod-adapter` package.
+Route search schemas are now passed straight to `validateSearch`.
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 0585562f..7a5dc4f4 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "frontend",
-  "version": "0.7.2",
+  "version": "0.7.10",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "frontend",
-      "version": "0.7.2",
+      "version": "0.7.10",
       "dependencies": {
         "@floating-ui/react": "^0.27.16",
         "@mdx-js/react": "^3.1.0",
@@ -33,7 +33,6 @@
         "@tanstack/react-router": "^1.115.3",
         "@tanstack/react-table": "^8.21.2",
         "@tanstack/react-virtual": "^3.11.2",
-        "@tanstack/zod-adapter": "^1.115.3",
         "@types/d3-scale": "^4.0.9",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
@@ -50,7 +49,7 @@
         "tailwind-merge": "^3.0.2",
         "tailwindcss": "^4.0.9",
         "tailwindcss-animate": "^1.0.7",
-        "zod": "^3.24.2"
+        "zod": "^4.0.0"
       },
       "devDependencies": {
         "@biomejs/biome": "^2.2.4",
@@ -4001,16 +4000,6 @@
         "url": "https://github.com/sponsors/tannerlinsley"
       }
     },
-    "node_modules/@tanstack/router-generator/node_modules/zod": {
-      "version": "4.4.3",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
-      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
-      "dev": true,
-      "license": "MIT",
-      "funding": {
-        "url": "https://github.com/sponsors/colinhacks"
-      }
-    },
     "node_modules/@tanstack/router-plugin": {
       "version": "1.168.35",
       "resolved": "https://registry.npmjs.org/@tanstack/router-plugin/-/router-plugin-1.168.35.tgz",
@@ -4060,16 +4049,6 @@
         }
       }
     },
-    "node_modules/@tanstack/router-plugin/node_modules/zod": {
-      "version": "4.5.1",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.5.1.tgz",
-      "integrity": "sha512-P3GqeAEOEDqKvafVGLezbg+39YW/ze4xrD4qdS0adOY8eoI3zfjv1PQM4UwQzgT8mZKXEbqtVt8K+ZKGqkMFKg==",
-      "dev": true,
-      "license": "MIT",
-      "funding": {
-        "url": "https://github.com/sponsors/colinhacks"
-      }
-    },
     "node_modules/@tanstack/router-utils": {
       "version": "1.162.2",
       "resolved": "https://registry.npmjs.org/@tanstack/router-utils/-/router-utils-1.162.2.tgz",
@@ -4141,23 +4120,6 @@
         "url": "https://github.com/sponsors/tannerlinsley"
       }
     },
-    "node_modules/@tanstack/zod-adapter": {
-      "version": "1.167.0",
-      "resolved": "https://registry.npmjs.org/@tanstack/zod-adapter/-/zod-adapter-1.167.0.tgz",
-      "integrity": "sha512-5Wlm5teSu+pz3KKhfa1ESsiOJXbvV6ITr1vKOQKi9yEdtozp6VefEzxzafLLida97mnL2tmauva/njokQrG5CA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=20.19"
-      },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/tannerlinsley"
-      },
-      "peerDependencies": {
-        "@tanstack/react-router": ">=1.43.2",
-        "zod": "^3.23.8"
-      }
-    },
     "node_modules/@testing-library/dom": {
       "version": "10.4.1",
       "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-10.4.1.tgz",
@@ -10300,9 +10262,9 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.76",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "version": "4.6.2",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.6.2.tgz",
+      "integrity": "sha512-lh5RCAGFa1Cm2hjtNwLQhSs/AsqdWnTQaBER9fEwN/88pSh7KOtJavtBx/0VlkN/uFd61SwYmljLMDAsHlvzBQ==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
diff --git a/frontend/package.json b/frontend/package.json
index c5882875..84e7ccc9 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -38,7 +38,6 @@
     "@tanstack/react-router": "^1.115.3",
     "@tanstack/react-table": "^8.21.2",
     "@tanstack/react-virtual": "^3.11.2",
-    "@tanstack/zod-adapter": "^1.115.3",
     "@types/d3-scale": "^4.0.9",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
@@ -55,7 +54,7 @@
     "tailwind-merge": "^3.0.2",
     "tailwindcss": "^4.0.9",
     "tailwindcss-animate": "^1.0.7",
-    "zod": "^3.24.2"
+    "zod": "^4.0.0"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.2.4",
diff --git a/frontend/src/routes/_app/datasets.index.tsx b/frontend/src/routes/_app/datasets.index.tsx
index 179ada69..3ecb8b4b 100644
--- a/frontend/src/routes/_app/datasets.index.tsx
+++ b/frontend/src/routes/_app/datasets.index.tsx
@@ -1,6 +1,5 @@
 import { useInfiniteQuery } from "@tanstack/react-query";
 import { createFileRoute, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import {
   datasetsListInfiniteOptions,
@@ -20,7 +19,7 @@ const DatasetsSearchSchema = z.object({
 
 export const Route = createFileRoute("/_app/datasets/")({
   component: SourcesIndexPage,
-  validateSearch: zodValidator(DatasetsSearchSchema),
+  validateSearch: DatasetsSearchSchema,
   staticData: {
     title: "Datasets",
   },
diff --git a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/explorer.tsx b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/explorer.tsx
index 8ad952ee..336d80ff 100644
--- a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/explorer.tsx
+++ b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/explorer.tsx
@@ -1,6 +1,5 @@
 import { useSuspenseQuery } from "@tanstack/react-query";
 import { createFileRoute, getRouteApi, Navigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { Suspense } from "react";
 import { explorerGetCollectionOptions } from "@/client/@tanstack/react-query.gen";
 import { ErrorBoundary, ErrorFallback } from "@/components/app";
@@ -103,5 +102,5 @@ export const Route = createFileRoute(
   "/_app/diagnostics/$providerSlug/$diagnosticSlug/explorer",
 )({
   component: Explorer,
-  validateSearch: zodValidator(mipEraSearchSchema),
+  validateSearch: mipEraSearchSchema,
 });
diff --git a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/figures.tsx b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/figures.tsx
index 3eb8ce33..435247a0 100644
--- a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/figures.tsx
+++ b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/figures.tsx
@@ -1,5 +1,4 @@
 import { createFileRoute } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { MipEraScope } from "@/components/charts/mipEraBar";
 import { FigureGallery } from "@/components/diagnostics/figureGallery";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
@@ -35,5 +34,5 @@ export const Route = createFileRoute(
   "/_app/diagnostics/$providerSlug/$diagnosticSlug/figures",
 )({
   component: Figures,
-  validateSearch: zodValidator(mipEraSearchSchema),
+  validateSearch: mipEraSearchSchema,
 });
diff --git a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/groups.tsx b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/groups.tsx
index 3cfeae21..bf9d9a0d 100644
--- a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/groups.tsx
+++ b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/groups.tsx
@@ -1,5 +1,4 @@
 import { createFileRoute } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { MipEraScope } from "@/components/charts/mipEraBar";
 import ExecutionGroupTable from "@/components/execution/executionGroupTable.tsx";
 import { useMipEra } from "@/hooks/useMipEra";
@@ -27,7 +26,7 @@ export const Route = createFileRoute(
   "/_app/diagnostics/$providerSlug/$diagnosticSlug/groups",
 )({
   component: Executions,
-  validateSearch: zodValidator(mipEraSearchSchema),
+  validateSearch: mipEraSearchSchema,
   staticData: {
     title: "Execution Groups",
   },
diff --git a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/scalars.tsx b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/scalars.tsx
index d2f2b94b..be8374fd 100644
--- a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/scalars.tsx
+++ b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/scalars.tsx
@@ -1,5 +1,4 @@
 import { createFileRoute, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import { MipEraScope } from "@/components/charts/mipEraBar";
 import { Values } from "@/components/execution/values";
@@ -73,7 +72,7 @@ export const Route = createFileRoute(
   "/_app/diagnostics/$providerSlug/$diagnosticSlug/scalars",
 )({
   component: ScalarsValuesTab,
-  validateSearch: zodValidator(valuesSearchSchema),
+  validateSearch: valuesSearchSchema,
   staticData: {
     title: "Scalar Values",
   },
diff --git a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/series.tsx b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/series.tsx
index 132c5cef..86d3f410 100644
--- a/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/series.tsx
+++ b/frontend/src/routes/_app/diagnostics.$providerSlug.$diagnosticSlug/series.tsx
@@ -1,5 +1,4 @@
 import { createFileRoute, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import { MipEraScope } from "@/components/charts/mipEraBar";
 import { Values } from "@/components/execution/values";
@@ -74,7 +73,7 @@ export const Route = createFileRoute(
   "/_app/diagnostics/$providerSlug/$diagnosticSlug/series",
 )({
   component: SeriesValuesTab,
-  validateSearch: zodValidator(valuesSearchSchema),
+  validateSearch: valuesSearchSchema,
   staticData: {
     title: "Series Values",
   },
diff --git a/frontend/src/routes/_app/executions.$groupId/scalar.tsx b/frontend/src/routes/_app/executions.$groupId/scalar.tsx
index 72cf40b3..298943e4 100644
--- a/frontend/src/routes/_app/executions.$groupId/scalar.tsx
+++ b/frontend/src/routes/_app/executions.$groupId/scalar.tsx
@@ -1,5 +1,4 @@
 import { createFileRoute, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import { Values } from "@/components/execution/values";
 import {
@@ -69,7 +68,7 @@ const ScalarValuesTab = () => {
 
 export const Route = createFileRoute("/_app/executions/$groupId/scalar")({
   component: ScalarValuesTab,
-  validateSearch: zodValidator(scalarValuesSearchSchema),
+  validateSearch: scalarValuesSearchSchema,
   staticData: {
     title: "Scalar Values",
   },
diff --git a/frontend/src/routes/_app/executions.$groupId/series.tsx b/frontend/src/routes/_app/executions.$groupId/series.tsx
index 09587be9..84d46ad9 100644
--- a/frontend/src/routes/_app/executions.$groupId/series.tsx
+++ b/frontend/src/routes/_app/executions.$groupId/series.tsx
@@ -1,5 +1,4 @@
 import { createFileRoute, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import { Values } from "@/components/execution/values";
 import {
@@ -69,7 +68,7 @@ const SeriesValuesTab = () => {
 
 export const Route = createFileRoute("/_app/executions/$groupId/series")({
   component: SeriesValuesTab,
-  validateSearch: zodValidator(seriesValuesSearchSchema),
+  validateSearch: seriesValuesSearchSchema,
   staticData: {
     title: "Series Values",
   },
diff --git a/frontend/src/routes/_app/executions.index.tsx b/frontend/src/routes/_app/executions.index.tsx
index b7e43b5c..7b9fbb30 100644
--- a/frontend/src/routes/_app/executions.index.tsx
+++ b/frontend/src/routes/_app/executions.index.tsx
@@ -1,6 +1,5 @@
 import { useInfiniteQuery } from "@tanstack/react-query";
 import { createFileRoute, Link, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import { executionsListRecentExecutionGroupsQueryKey } from "@/client/@tanstack/react-query.gen";
 import { executionsListRecentExecutionGroups } from "@/client/sdk.gen";
@@ -23,7 +22,7 @@ const ExecutionsSearchSchema = z.object({
 
 export const Route = createFileRoute("/_app/executions/")({
   component: ExecutionsListPage,
-  validateSearch: zodValidator(ExecutionsSearchSchema),
+  validateSearch: ExecutionsSearchSchema,
   staticData: {
     title: "Executions",
   },
diff --git a/frontend/src/routes/_app/explorer/themes.tsx b/frontend/src/routes/_app/explorer/themes.tsx
index 6ad1b0a7..6d6ef896 100644
--- a/frontend/src/routes/_app/explorer/themes.tsx
+++ b/frontend/src/routes/_app/explorer/themes.tsx
@@ -1,6 +1,5 @@
 import { useSuspenseQuery } from "@tanstack/react-query";
 import { createFileRoute } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { useState } from "react";
 import { z } from "zod";
 import { explorerGetThemeOptions } from "@/client/@tanstack/react-query.gen";
@@ -65,5 +64,5 @@ const Themes = () => {
 
 export const Route = createFileRoute("/_app/explorer/themes")({
   component: Themes,
-  validateSearch: zodValidator(themesSchema),
+  validateSearch: themesSchema,
 });
diff --git a/frontend/src/routes/_app/models.$sourceId.tsx b/frontend/src/routes/_app/models.$sourceId.tsx
index a43d5064..8c150ba0 100644
--- a/frontend/src/routes/_app/models.$sourceId.tsx
+++ b/frontend/src/routes/_app/models.$sourceId.tsx
@@ -1,6 +1,5 @@
 import { useQuery } from "@tanstack/react-query";
 import { createFileRoute, Link } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import {
   modelsEnsembleOptions,
@@ -33,7 +32,7 @@ const ModelSearchSchema = z.object(mipEraSearchFields);
 
 export const Route = createFileRoute("/_app/models/$sourceId")({
   component: ModelDetailPage,
-  validateSearch: zodValidator(ModelSearchSchema),
+  validateSearch: ModelSearchSchema,
   staticData: {
     title: "Model",
   },
diff --git a/frontend/src/routes/_app/models.index.tsx b/frontend/src/routes/_app/models.index.tsx
index 01ffba3c..58c058a6 100644
--- a/frontend/src/routes/_app/models.index.tsx
+++ b/frontend/src/routes/_app/models.index.tsx
@@ -1,6 +1,5 @@
 import { useQuery } from "@tanstack/react-query";
 import { createFileRoute, useNavigate } from "@tanstack/react-router";
-import { zodValidator } from "@tanstack/zod-adapter";
 import { z } from "zod";
 import { modelsListOptions } from "@/client/@tanstack/react-query.gen";
 import { PageHeader } from "@/components/app/pageHeader";
@@ -19,7 +18,7 @@ const ModelsSearchSchema = z.object({
 
 export const Route = createFileRoute("/_app/models/")({
   component: ModelsIndexPage,
-  validateSearch: zodValidator(ModelsSearchSchema),
+  validateSearch: ModelsSearchSchema,
   staticData: {
     title: "Models",
   },