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feat(voice)!: migrate STT streaming to match GA Realtime API #1759

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Merged
merged 1 commit into from
Sep 17, 2025
Merged

feat(voice)!: migrate STT streaming to match GA Realtime API #1759

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1 change: 1 addition & 0 deletions src/agents/tracing/spans.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ class SpanError(TypedDict):
message: A human-readable error description
data: Optional dictionary containing additional error context
"""

message: str
data: dict[str, Any] | None

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13 changes: 9 additions & 4 deletions src/agents/voice/models/openai_stt.py
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Expand Up @@ -163,11 +163,16 @@ async def _configure_session(self) -> None:
await self._websocket.send(
json.dumps(
{
"type": "transcription_session.update",
"type": "session.update",
"session": {
"input_audio_format": "pcm16",
"input_audio_transcription": {"model": self._model},
"turn_detection": self._turn_detection,
"type": "transcription",
"audio": {
"input": {
"format": {"type": "audio/pcm", "rate": 24000},
"transcription": {"model": self._model},
"turn_detection": self._turn_detection,
}
},
},
}
)
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6 changes: 3 additions & 3 deletions tests/voice/test_openai_stt.py
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Expand Up @@ -115,10 +115,10 @@ async def test_session_connects_and_configures_successfully():
assert headers.get("OpenAI-Beta") is None
assert headers.get("OpenAI-Log-Session") == "1"

# Check that we sent a 'transcription_session.update' message
# Check that we sent a 'session.update' message
sent_messages = [call.args[0] for call in mock_ws.send.call_args_list]
assert any('"type": "transcription_session.update"' in msg for msg in sent_messages), (
f"Expected 'transcription_session.update' in {sent_messages}"
assert any('"type": "session.update"' in msg for msg in sent_messages), (
f"Expected 'session.update' in {sent_messages}"
)

await session.close()
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