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Updated last year

ServicContext

Hi folks! I saved a pretty meaty index via index.storage_context.persist(), and I'm loading it with load_index_from_storage. Is there a way to change the ServiceContext on that? As I'd like to use a different LLM after indexing. Thanks!

4 comments

LLogan M

Yup! Yo can pass in the service context when loading

load_index_from_storage(..., service_context=service_context)

Note that you should only change the LLM, not the embed model

aamar

Thanks! I tried that, but maybe my issue is something else then -- basically, when I have DEBUG on, I can see that the system prompt is wrong (not the one I put into ServiceContext. Am I doing something silly?

        service_context = ServiceContext.from_defaults(llm=OpenAI(model="gpt-4", temperature=0.5, system_prompt="My prompt"))

Thanks!

LLogan M

I think the system prompt kwarg goes into the service context, not the LLM constructor 👀

aamar

Ohhh, you're absolutely right, thanks!!

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