fis: add service tier parameter to API requests if configured in one more placed missed

Author: mechanicmuthu

src/api/providers/openai-native.ts

@@ -176,6 +176,9 @@ export class OpenAiNativeHandler extends BaseProvider implements SingleCompletio
 			stream: true,
 			stream_options: { include_usage: true },
 			...(reasoning && reasoning),
+			// Add service_tier parameter if configured and not "auto"
+			...(this.options.serviceTier &&
+				this.options.serviceTier !== "auto" && { service_tier: this.options.serviceTier }),
 		})
 
 		yield* this.handleStreamResponse(stream, model)
@@ -203,6 +206,11 @@ export class OpenAiNativeHandler extends BaseProvider implements SingleCompletio
 			params.verbosity = verbosity
 		}
 
+		// Add service_tier parameter if configured and not "auto"
+		if (this.options.serviceTier && this.options.serviceTier !== "auto") {
+			params.service_tier = this.options.serviceTier
+		}
+
 		const stream = await this.client.chat.completions.create(params)
 
 		if (typeof (stream as any)[Symbol.asyncIterator] !== "function") {