[FEATURE_REQUEST] Service Tier Support for Openrouter, Google, OpenAI

Have you searched for similar requests?

Yes

Is your feature request related to a problem? If so, please describe.

No response

Describe the solution you'd like

Simple feature request to have a configuration option to defined the service tier passed to OpenRouter, Google, or OpenAI. I would envision it as a dropdown input in the connection profile.

https://openrouter.ai/docs/guides/features/service-tiers documents how to set it for OpenRouter and links to documentation regarding Google's and OpenAI's pages on the feature.

VertexAI https://docs.cloud.google.com/vertex-ai/generative-ai/docs/flex-paygo https://docs.cloud.google.com/vertex-ai/generative-ai/docs/priority-paygo

Gemini https://ai.google.dev/gemini-api/docs/flex-inference https://ai.google.dev/gemini-api/docs/priority-inference

OpenAI https://developers.openai.com/api/reference/resources/chat/subresources/completions/methods/create#(resource)%20chat.completions%20%3E%20(method)%20create%20%3E%20(params)%200.non_streaming%20%3E%20(param)%20service_tier%20%3E%20(schema) https://developers.openai.com/api/reference/resources/responses/methods/create#(resource)%20responses%20%3E%20(method)%20create%20%3E%20(params)%200.non_streaming%20%3E%20(param)%20service_tier%20%3E%20(schema)

Describe alternatives you've considered

No response

Additional context

Able to test for OpenRouter, not for direct APIs.

Priority

Medium (Would be very useful)

Are you willing to test this on staging/unstable branch if this is implemented?

Yes