feat: update AWS Bedrock cross-region inference profile mapping

- Add AWS_INFERENCE_PROFILE_MAPPING with official inference profile prefixes
- Update getPrefixForRegion to use AWS recommended inference profiles
- Improve region-to-profile mapping based on AWS documentation
- Prioritize more specific region patterns (e.g., us-gov- before us-)
- Add support for apac., ca., sa., and ug. inference profiles

Author: KevinZhao

packages/types/src/providers/bedrock.ts

@@ -360,6 +360,24 @@ export const BEDROCK_MAX_TOKENS = 4096
 
 export const BEDROCK_DEFAULT_CONTEXT = 128_000
 
+// AWS Bedrock Inference Profile mapping based on official documentation
+// https://docs.aws.amazon.com/bedrock/latest/userguide/inference-profiles-support.html
+// This mapping prioritizes AWS's recommended inference profiles for optimal cross-region support
+export const AWS_INFERENCE_PROFILE_MAPPING: Record<string, string> = {
+	// Americas regions → us. inference profile
+	"us-": "us.",
+	// Europe regions → eu. inference profile
+	"eu-": "eu.",
+	// Asia Pacific regions → apac. inference profile (updated per AWS documentation)
+	"ap-": "apac.",
+	// Canada regions → ca. inference profile
+	"ca-": "ca.",
+	// South America regions → sa. inference profile
+	"sa-": "sa.",
+	// US Government Cloud → ug. inference profile
+	"us-gov-": "ug.",
+}
+
 export const BEDROCK_REGION_INFO: Record<
 	string,
 	{

src/api/providers/bedrock.ts

@@ -21,6 +21,7 @@ import {
 	BEDROCK_MAX_TOKENS,
 	BEDROCK_DEFAULT_CONTEXT,
 	BEDROCK_REGION_INFO,
+	AWS_INFERENCE_PROFILE_MAPPING,
 } from "@roo-code/types"
 
 import { ApiStream } from "../transform/stream"
@@ -900,14 +901,12 @@ export class AwsBedrockHandler extends BaseProvider implements SingleCompletionH
 			//a model was selected from the drop down
 			modelConfig = this.getModelById(this.options.apiModelId as string)
 
-			if (this.options.awsUseCrossRegionInference) {
-				// Get the current region
-				const region = this.options.awsRegion || ""
-				// Use the helper method to get the appropriate prefix for this region
-				const prefix = AwsBedrockHandler.getPrefixForRegion(region)
-
-				// Apply the prefix if one was found, otherwise use the model ID as is
-				modelConfig.id = prefix ? `${prefix}${modelConfig.id}` : modelConfig.id
+			// Add cross-region inference prefix if enabled
+			if (this.options.awsUseCrossRegionInference && this.options.awsRegion) {
+				const prefix = AwsBedrockHandler.getPrefixForRegion(this.options.awsRegion)
+				if (prefix) {
+					modelConfig.id = `${prefix}${modelConfig.id}`
+				}
 			}
 		}
 
@@ -978,11 +977,16 @@ export class AwsBedrockHandler extends BaseProvider implements SingleCompletionH
 	}
 
 	private static getPrefixForRegion(region: string): string | undefined {
-		for (const [prefix, info] of Object.entries(BEDROCK_REGION_INFO)) {
-			if (info.pattern && region.startsWith(info.pattern)) {
-				return prefix
+		// Use AWS recommended inference profile prefixes
+		// Sort by prefix length (descending) to ensure more specific prefixes match first (e.g., us-gov- before us-)
+		const sortedMappings = Object.entries(AWS_INFERENCE_PROFILE_MAPPING).sort(([a], [b]) => b.length - a.length)
+
+		for (const [regionPattern, inferenceProfile] of sortedMappings) {
+			if (region.startsWith(regionPattern)) {
+				return inferenceProfile
 			}
 		}
+
 		return undefined
 	}