diff --git a/codex-rs/app-server-protocol/schema/json/ServerNotification.json b/codex-rs/app-server-protocol/schema/json/ServerNotification.json
index 95aa8ada68..82914f3a6f 100644
--- a/codex-rs/app-server-protocol/schema/json/ServerNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/ServerNotification.json
@@ -3323,7 +3323,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
index 66426f78ef..f856b43d66 100644
--- a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
+++ b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
@@ -15571,7 +15571,7 @@
                 "description": "The command's working directory."
               },
               "durationMs": {
-                "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+                "description": "The duration of the command execution in milliseconds.",
                 "format": "int64",
                 "type": [
                   "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json
index e4f05120d5..c17efe7a45 100644
--- a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json
+++ b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json
@@ -13457,7 +13457,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json
index d8fab4e583..0831483a32 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json
@@ -677,7 +677,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json
index 9bf7fbcadb..16bfeece14 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json
@@ -677,7 +677,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json
index 599eea37cf..16abcd7806 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json
@@ -821,7 +821,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json
index 1b80b34630..653c5f2387 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json
@@ -1647,7 +1647,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json
index b1ba249739..2f5cbb9500 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json
@@ -1097,7 +1097,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json
index eef2ff6395..b9ae59708a 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json
@@ -1097,7 +1097,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json
index 293d839263..cda474c294 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json
@@ -1097,7 +1097,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json
index 08835caf77..27cf47f2fc 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json
@@ -1647,7 +1647,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json
index 9236ec7103..e5339f4e99 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json
@@ -1097,7 +1097,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json
index cb20704e9b..7d93606aa4 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json
@@ -1647,7 +1647,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json
index a3aff27e8f..774686e46a 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json
@@ -1097,7 +1097,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json
index 86ce2f60a1..64179af7e1 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json
@@ -1097,7 +1097,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json
index 42562066a5..0739fa31bc 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json
@@ -821,7 +821,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json b/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json
index afc1bdcd18..bc5917ef15 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json
@@ -821,7 +821,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json
index 1cc3119fd8..22ad85d906 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json
@@ -821,7 +821,7 @@
               "description": "The command's working directory."
             },
             "durationMs": {
-              "description": "Elapsed command runtime in milliseconds. Final once the command completes.",
+              "description": "The duration of the command execution in milliseconds.",
               "format": "int64",
               "type": [
                 "integer",
diff --git a/codex-rs/app-server-protocol/schema/typescript/v2/ThreadItem.ts b/codex-rs/app-server-protocol/schema/typescript/v2/ThreadItem.ts
index eee81b7508..f7880c9d32 100644
--- a/codex-rs/app-server-protocol/schema/typescript/v2/ThreadItem.ts
+++ b/codex-rs/app-server-protocol/schema/typescript/v2/ThreadItem.ts
@@ -51,7 +51,7 @@ aggregatedOutput: string | null,
  */
 exitCode: number | null,
 /**
- * Elapsed command runtime in milliseconds. Final once the command completes.
+ * The duration of the command execution in milliseconds.
  */
 durationMs: number | null, } | { "type": "fileChange", id: string, changes: Array<FileUpdateChange>, status: PatchApplyStatus, } | { "type": "mcpToolCall", id: string, server: string, tool: string, status: McpToolCallStatus, arguments: JsonValue, mcpAppResourceUri?: string, result: McpToolCallResult | null, error: McpToolCallError | null,
 /**
diff --git a/codex-rs/app-server-protocol/src/protocol/v2.rs b/codex-rs/app-server-protocol/src/protocol/v2.rs
index bf9e2e41b1..963ac69000 100644
--- a/codex-rs/app-server-protocol/src/protocol/v2.rs
+++ b/codex-rs/app-server-protocol/src/protocol/v2.rs
@@ -5913,7 +5913,7 @@ pub enum ThreadItem {
         aggregated_output: Option<String>,
         /// The command's exit code.
         exit_code: Option<i32>,
-        /// Elapsed command runtime in milliseconds. Final once the command completes.
+        /// The duration of the command execution in milliseconds.
         #[ts(type = "number | null")]
         duration_ms: Option<i64>,
     },