From 9fd6c81c597785500a4a7676ea7cffed47cbf333 Mon Sep 17 00:00:00 2001
From: Sylvester Kaczmarek
 <16242628+sylvesterkaczmarek@users.noreply.github.com>
Date: Thu, 20 Aug 2026 03:55:56 +0100
Subject: [PATCH] fix(voice): include current OpenAI TTS voices (#4535)

---
 src/agents/voice/model.py           | 16 +++++++++++++++-
 tests/voice/test_tts_voice_types.py |  7 +++++++
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 tests/voice/test_tts_voice_types.py

diff --git a/src/agents/voice/model.py b/src/agents/voice/model.py
index ab1b5f75..5698fbee 100644
--- a/src/agents/voice/model.py
+++ b/src/agents/voice/model.py
@@ -14,7 +14,21 @@ DEFAULT_TTS_INSTRUCTIONS = (
 )
 DEFAULT_TTS_BUFFER_SIZE = 120
 
-TTSVoice = Literal["alloy", "ash", "coral", "echo", "fable", "onyx", "nova", "sage", "shimmer"]
+TTSVoice = Literal[
+    "alloy",
+    "ash",
+    "ballad",
+    "coral",
+    "echo",
+    "fable",
+    "onyx",
+    "nova",
+    "sage",
+    "shimmer",
+    "verse",
+    "marin",
+    "cedar",
+]
 """Exportable type for the TTSModelSettings voice enum"""
 
 
diff --git a/tests/voice/test_tts_voice_types.py b/tests/voice/test_tts_voice_types.py
new file mode 100644
index 00000000..346f7313
--- /dev/null
+++ b/tests/voice/test_tts_voice_types.py
@@ -0,0 +1,7 @@
+from typing import get_args
+
+from agents.voice.model import TTSVoice
+
+
+def test_tts_voice_type_includes_current_openai_builtin_voices() -> None:
+    assert {"ballad", "verse", "marin", "cedar"} <= set(get_args(TTSVoice))