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pipecat/changelog/3918.added.md
Aleix Conchillo Flaqué 3c60b0c8af Add changelog for #3918
2026-03-04 17:37:32 -08:00

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- Wired up `system_instruction` in `BaseOpenAILLMService`, `AnthropicLLMService`, and `AWSBedrockLLMService` so it works as a default system prompt, matching the behavior of the Google services. This enables sharing a single `LLMContext` across multiple LLM services, where each service provides its own system instruction independently.
```python
llm = OpenAILLMService(
api_key=os.getenv("OPENAI_API_KEY"),
system_instruction="You are a helpful assistant.",
)
context = LLMContext()
@transport.event_handler("on_client_connected")
async def on_client_connected(transport, client):
context.add_message({"role": "user", "content": "Please introduce yourself."})
await task.queue_frames([LLMRunFrame()])
```