diff --git a/.github/workflows/release-verify.yml b/.github/workflows/release-verify.yml
index 79adee9229..cf6dba8319 100644
--- a/.github/workflows/release-verify.yml
+++ b/.github/workflows/release-verify.yml
@@ -59,28 +59,48 @@ jobs:
       matrix:
         include:
           # Split the long chat file by collected test locations, and balance
-          # the remaining server files across five runners. Normal PR/local
+          # the remaining server files across ten runners. Normal PR/local
           # invocations retain their complete general-server group.
           - group: general-server-without-chat
-            group_label: server (1/5)
+            group_label: server (1/10)
             shard_index: 0
-            shard_count: 5
+            shard_count: 10
           - group: general-server-without-chat
-            group_label: server (2/5)
+            group_label: server (2/10)
             shard_index: 1
-            shard_count: 5
+            shard_count: 10
           - group: general-server-without-chat
-            group_label: server (3/5)
+            group_label: server (3/10)
             shard_index: 2
-            shard_count: 5
+            shard_count: 10
           - group: general-server-without-chat
-            group_label: server (4/5)
+            group_label: server (4/10)
             shard_index: 3
-            shard_count: 5
+            shard_count: 10
           - group: general-server-without-chat
-            group_label: server (5/5)
+            group_label: server (5/10)
             shard_index: 4
-            shard_count: 5
+            shard_count: 10
+          - group: general-server-without-chat
+            group_label: server (6/10)
+            shard_index: 5
+            shard_count: 10
+          - group: general-server-without-chat
+            group_label: server (7/10)
+            shard_index: 6
+            shard_count: 10
+          - group: general-server-without-chat
+            group_label: server (8/10)
+            shard_index: 7
+            shard_count: 10
+          - group: general-server-without-chat
+            group_label: server (9/10)
+            shard_index: 8
+            shard_count: 10
+          - group: general-server-without-chat
+            group_label: server (10/10)
+            shard_index: 9
+            shard_count: 10
           - group: general-chat
             group_label: chat (1/3)
             shard_index: 0
diff --git a/doc/cloud-build-readiness.md b/doc/cloud-build-readiness.md
index e5c45c1586..1e33170162 100644
--- a/doc/cloud-build-readiness.md
+++ b/doc/cloud-build-readiness.md
@@ -32,6 +32,12 @@ runner capacity to avoid waiting behind an older release. No verification gate i
 removed from npm publication. Watch organization-wide runner queues when measuring
 the result.
 
+Release verification spreads the general server suites across ten standard hosted
+runners, with the long chat suite split separately across three jobs. Each server
+job still runs one test worker. The partition covers every suite exactly once;
+normal PR and local test groups keep their existing shape. More jobs increase
+concurrent runner demand, so compare queue time as well as test duration.
+
 The artifact wait runs for up to 30 minutes and reports what is missing. Only
 an HTTP 404 means publication is pending; authorization errors, upstream outages,
 and identity mismatches fail the job. A failed, cancelled, or skipped prerequisite
diff --git a/scripts/__tests__/release-verify-workflow.test.mjs b/scripts/__tests__/release-verify-workflow.test.mjs
index 9def9e3800..ff27c430c5 100644
--- a/scripts/__tests__/release-verify-workflow.test.mjs
+++ b/scripts/__tests__/release-verify-workflow.test.mjs
@@ -230,7 +230,7 @@ test("release verify workflow covers the same split test surface as stable PR ve
   for (const group of ["general-server-without-chat", "general-chat", "general-workspaces-a", "general-workspaces-b"]) {
     assert.match(verifyWorkflow, new RegExp(`group: ${group}`));
   }
-  for (const [group, count] of [["general-server-without-chat", 5], ["general-chat", 3]]) {
+  for (const [group, count] of [["general-server-without-chat", 10], ["general-chat", 3]]) {
     const rows = [...verifyWorkflow.matchAll(new RegExp(`group: ${group}\\n\\s+group_label: [^\\n]+\\n\\s+shard_index: (\\d+)\\n\\s+shard_count: (\\d+)`, "g"))];
     assert.deepEqual(rows.map((row) => [Number(row[1]), Number(row[2])]),
       Array.from({ length: count }, (_, index) => [index, count]));
diff --git a/scripts/__tests__/run-vitest-stable-shard.test.mjs b/scripts/__tests__/run-vitest-stable-shard.test.mjs
index 441657d173..3d5a329eb8 100644
--- a/scripts/__tests__/run-vitest-stable-shard.test.mjs
+++ b/scripts/__tests__/run-vitest-stable-shard.test.mjs
@@ -270,9 +270,9 @@ test("the real shard partition is duration-balanced", () => {
 
 test("release server shards plus the dedicated chat file cover the original server group exactly", () => {
   const full = dryRunJson(["--mode", "general", "--group", "general-server", "--shard-index", "0", "--shard-count", "1"]);
-  const shards = Array.from({ length: 5 }, (_, index) => dryRunJson([
+  const shards = Array.from({ length: 10 }, (_, index) => dryRunJson([
     "--mode", "general", "--group", "general-server-without-chat",
-    "--shard-index", String(index), "--shard-count", "5",
+    "--shard-index", String(index), "--shard-count", "10",
   ]));
   const files = shards.flatMap((shard) => shard.selectedGeneralServerSuites);
   const chat = "server/src/__tests__/chat-channels.integration.test.ts";