diff --git a/codex-cli/src/utils/session.ts b/codex-cli/src/utils/session.ts
deleted file mode 100644
index 19867220fe..0000000000
--- a/codex-cli/src/utils/session.ts
+++ /dev/null
@@ -1,58 +0,0 @@
-// Node ESM supports JSON imports behind an assertion. TypeScript's
-// `resolveJsonModule` takes care of the typings.
-import pkg from "../../package.json" assert { type: "json" };
-
-// Read the version directly from package.json.
-export const CLI_VERSION: string = (pkg as { version: string }).version;
-export const ORIGIN = "codex_cli_ts";
-
-export type TerminalChatSession = {
-  /** Globally unique session identifier */
-  id: string;
-  /** The OpenAI username associated with this session */
-  user: string;
-  /** Version identifier of the Codex CLI that produced the session */
-  version: string;
-  /** The model used for the conversation */
-  model: string;
-  /** ISO timestamp noting when the session was persisted */
-  timestamp: string;
-  /** Optional custom instructions that were active for the run */
-  instructions: string;
-};
-
-let sessionId = "";
-
-/**
- * Update the globally tracked session identifier.
- * Passing an empty string clears the current session.
- */
-export function setSessionId(id: string): void {
-  sessionId = id;
-}
-
-/**
- * Retrieve the currently active session identifier, or an empty string when
- * no session is active.
- */
-export function getSessionId(): string {
-  return sessionId;
-}
-
-let currentModel = "";
-
-/**
- * Record the model that is currently being used for the conversation.
- * Setting an empty string clears the record so the next agent run can update it.
- */
-export function setCurrentModel(model: string): void {
-  currentModel = model;
-}
-
-/**
- * Return the model that was last supplied to {@link setCurrentModel}.
- * If no model has been recorded yet, an empty string is returned.
- */
-export function getCurrentModel(): string {
-  return currentModel;
-}