diff --git a/codex-rs/core/src/client.rs b/codex-rs/core/src/client.rs
index cd07ab6bc7..feef9e00bd 100644
--- a/codex-rs/core/src/client.rs
+++ b/codex-rs/core/src/client.rs
@@ -147,18 +147,7 @@ impl ModelClient {
         }
     }
 
-    pub fn new_session(&self) -> ModelClientSession {
-        self.new_session_with_turn_metadata_and_cwd(None, None)
-    }
-
-    pub fn new_session_with_turn_metadata(
-        &self,
-        turn_metadata_header: Option<String>,
-    ) -> ModelClientSession {
-        self.new_session_with_turn_metadata_and_cwd(turn_metadata_header, None)
-    }
-
-    pub fn new_session_with_turn_metadata_and_cwd(
+    pub fn new_session(
         &self,
         turn_metadata_header: Option<String>,
         turn_metadata_cwd: Option<PathBuf>,
diff --git a/codex-rs/core/src/codex.rs b/codex-rs/core/src/codex.rs
index 1a89b5c7e3..01bf24ca8a 100644
--- a/codex-rs/core/src/codex.rs
+++ b/codex-rs/core/src/codex.rs
@@ -3383,7 +3383,7 @@ pub(crate) async fn run_turn(
     // many turns, from the perspective of the user, it is a single turn.
     let turn_diff_tracker = Arc::new(tokio::sync::Mutex::new(TurnDiffTracker::new()));
 
-    let mut client_session = turn_context.client.new_session_with_turn_metadata_and_cwd(
+    let mut client_session = turn_context.client.new_session(
         turn_context.turn_metadata_header.clone(),
         Some(turn_context.cwd.clone()),
     );
diff --git a/codex-rs/core/src/compact.rs b/codex-rs/core/src/compact.rs
index b48a6c35f7..48dd2e625d 100644
--- a/codex-rs/core/src/compact.rs
+++ b/codex-rs/core/src/compact.rs
@@ -335,7 +335,7 @@ async fn drain_to_completed(
     turn_context: &TurnContext,
     prompt: &Prompt,
 ) -> CodexResult<()> {
-    let mut client_session = turn_context.client.new_session_with_turn_metadata_and_cwd(
+    let mut client_session = turn_context.client.new_session(
         turn_context.turn_metadata_header.clone(),
         Some(turn_context.cwd.clone()),
     );
diff --git a/codex-rs/core/tests/chat_completions_payload.rs b/codex-rs/core/tests/chat_completions_payload.rs
index ffa2caa59f..b02d80137b 100644
--- a/codex-rs/core/tests/chat_completions_payload.rs
+++ b/codex-rs/core/tests/chat_completions_payload.rs
@@ -102,7 +102,7 @@ async fn run_request(input: Vec<ResponseItem>) -> Value {
         SessionSource::Exec,
         TransportManager::new(),
     )
-    .new_session();
+    .new_session(None, None);
 
     let mut prompt = Prompt::default();
     prompt.input = input;
diff --git a/codex-rs/core/tests/chat_completions_sse.rs b/codex-rs/core/tests/chat_completions_sse.rs
index 160699733e..921a14894b 100644
--- a/codex-rs/core/tests/chat_completions_sse.rs
+++ b/codex-rs/core/tests/chat_completions_sse.rs
@@ -103,7 +103,7 @@ async fn run_stream_with_bytes(sse_body: &[u8]) -> Vec<ResponseEvent> {
         SessionSource::Exec,
         TransportManager::new(),
     )
-    .new_session();
+    .new_session(None, None);
 
     let mut prompt = Prompt::default();
     prompt.input = vec![ResponseItem::Message {
diff --git a/codex-rs/core/tests/responses_headers.rs b/codex-rs/core/tests/responses_headers.rs
index d84f1a998b..40de99e39a 100644
--- a/codex-rs/core/tests/responses_headers.rs
+++ b/codex-rs/core/tests/responses_headers.rs
@@ -100,7 +100,7 @@ async fn responses_stream_includes_subagent_header_on_review() {
         session_source,
         TransportManager::new(),
     )
-    .new_session();
+    .new_session(None, None);
 
     let mut prompt = Prompt::default();
     prompt.input = vec![ResponseItem::Message {
@@ -294,7 +294,7 @@ async fn responses_stream_includes_subagent_header_on_other() {
         session_source,
         TransportManager::new(),
     )
-    .new_session();
+    .new_session(None, None);
 
     let mut prompt = Prompt::default();
     prompt.input = vec![ResponseItem::Message {
@@ -451,7 +451,7 @@ async fn responses_respects_model_info_overrides_from_config() {
         session_source,
         TransportManager::new(),
     )
-    .new_session();
+    .new_session(None, None);
 
     let mut prompt = Prompt::default();
     prompt.input = vec![ResponseItem::Message {
diff --git a/codex-rs/core/tests/suite/client.rs b/codex-rs/core/tests/suite/client.rs
index 439233d8af..93ec11e66f 100644
--- a/codex-rs/core/tests/suite/client.rs
+++ b/codex-rs/core/tests/suite/client.rs
@@ -1190,7 +1190,7 @@ async fn azure_responses_request_includes_store_and_reasoning_ids() {
         SessionSource::Exec,
         TransportManager::new(),
     )
-    .new_session();
+    .new_session(None, None);
 
     let mut prompt = Prompt::default();
     prompt.input.push(ResponseItem::Reasoning {
diff --git a/codex-rs/core/tests/suite/client_websockets.rs b/codex-rs/core/tests/suite/client_websockets.rs
index fc0ff37cf4..fef899c96e 100644
--- a/codex-rs/core/tests/suite/client_websockets.rs
+++ b/codex-rs/core/tests/suite/client_websockets.rs
@@ -53,7 +53,7 @@ async fn responses_websocket_streams_request() {
     .await;
 
     let harness = websocket_harness(&server).await;
-    let mut session = harness.client.new_session();
+    let mut session = harness.client.new_session(None, None);
     let prompt = prompt_with_input(vec![message_item("hello")]);
 
     stream_until_complete(&mut session, &prompt).await;
@@ -83,7 +83,7 @@ async fn responses_websocket_emits_websocket_telemetry_events() {
 
     let harness = websocket_harness(&server).await;
     harness.otel_manager.reset_runtime_metrics();
-    let mut session = harness.client.new_session();
+    let mut session = harness.client.new_session(None, None);
     let prompt = prompt_with_input(vec![message_item("hello")]);
 
     stream_until_complete(&mut session, &prompt).await;
@@ -113,7 +113,7 @@ async fn responses_websocket_emits_reasoning_included_event() {
     .await;
 
     let harness = websocket_harness(&server).await;
-    let mut session = harness.client.new_session();
+    let mut session = harness.client.new_session(None, None);
     let prompt = prompt_with_input(vec![message_item("hello")]);
 
     let mut stream = session
@@ -147,7 +147,7 @@ async fn responses_websocket_appends_on_prefix() {
     .await;
 
     let harness = websocket_harness(&server).await;
-    let mut session = harness.client.new_session();
+    let mut session = harness.client.new_session(None, None);
     let prompt_one = prompt_with_input(vec![message_item("hello")]);
     let prompt_two = prompt_with_input(vec![message_item("hello"), message_item("second")]);
 
@@ -183,7 +183,7 @@ async fn responses_websocket_creates_on_non_prefix() {
     .await;
 
     let harness = websocket_harness(&server).await;
-    let mut session = harness.client.new_session();
+    let mut session = harness.client.new_session(None, None);
     let prompt_one = prompt_with_input(vec![message_item("hello")]);
     let prompt_two = prompt_with_input(vec![message_item("different")]);