diff --git a/packages/types/src/providers/bedrock.ts b/packages/types/src/providers/bedrock.ts
index 19610c5150..62e180ad30 100644
--- a/packages/types/src/providers/bedrock.ts
+++ b/packages/types/src/providers/bedrock.ts
@@ -167,7 +167,7 @@ export const bedrockModels = {
 			},
 		],
 	},
-	"anthropic.claude-opus-4-7-v1": {
+	"anthropic.claude-opus-4-7": {
 		maxTokens: 8192,
 		contextWindow: 200_000, // Default 200K, extendable to 1M with beta flag 'context-1m-2025-08-07'
 		supportsImages: true,
@@ -549,7 +549,7 @@ export const BEDROCK_1M_CONTEXT_MODEL_IDS = [
 	"anthropic.claude-sonnet-4-5-20250929-v1:0",
 	"anthropic.claude-sonnet-4-6",
 	"anthropic.claude-opus-4-6-v1",
-	"anthropic.claude-opus-4-7-v1",
+	"anthropic.claude-opus-4-7",
 ] as const
 
 // Amazon Bedrock models that support Global Inference profiles
@@ -568,7 +568,7 @@ export const BEDROCK_GLOBAL_INFERENCE_MODEL_IDS = [
 	"anthropic.claude-haiku-4-5-20251001-v1:0",
 	"anthropic.claude-opus-4-5-20251101-v1:0",
 	"anthropic.claude-opus-4-6-v1",
-	"anthropic.claude-opus-4-7-v1",
+	"anthropic.claude-opus-4-7",
 ] as const
 
 // Amazon Bedrock Service Tier types
diff --git a/src/api/providers/bedrock.ts b/src/api/providers/bedrock.ts
index 2116dff08a..9283fe0ec1 100644
--- a/src/api/providers/bedrock.ts
+++ b/src/api/providers/bedrock.ts
@@ -59,14 +59,24 @@ interface BedrockInferenceConfig {
 // Define interface for Bedrock additional model request fields
 // This includes thinking configuration, 1M context beta, and other model-specific parameters
 interface BedrockAdditionalModelFields {
-	thinking?: {
-		type: "enabled"
-		budget_tokens: number
+	thinking?:
+		| {
+				type: "enabled"
+				budget_tokens: number
+		  }
+		| {
+				type: "adaptive"
+		  }
+	output_config?: {
+		effort?: "low" | "medium" | "high"
 	}
 	anthropic_beta?: string[]
 	[key: string]: any // Add index signature to be compatible with DocumentType
 }
 
+// Models that only support thinking.type: "adaptive" (not "enabled" with budget_tokens)
+const BEDROCK_ADAPTIVE_THINKING_ONLY_MODEL_IDS = ["anthropic.claude-opus-4-7"] as const
+
 // Define interface for Bedrock payload
 interface BedrockPayload {
 	modelId: BedrockModelId | string
@@ -390,12 +400,28 @@ export class AwsBedrockHandler extends BaseProvider implements SingleCompletionH
 
 		if ((isThinkingExplicitlyEnabled || isThinkingEnabledBySettings) && modelConfig.info.supportsReasoningBudget) {
 			thinkingEnabled = true
-			additionalModelRequestFields = {
-				thinking: {
-					type: "enabled",
-					budget_tokens: metadata?.thinking?.maxThinkingTokens || modelConfig.reasoningBudget || 4096,
-				},
+
+			// Opus 4.7 only supports thinking.type: "adaptive" with output_config.effort
+			// (NOT "enabled" with budget_tokens which returns a 400 error)
+			const baseId = this.parseBaseModelId(modelConfig.id)
+			if (BEDROCK_ADAPTIVE_THINKING_ONLY_MODEL_IDS.includes(baseId as any)) {
+				additionalModelRequestFields = {
+					thinking: {
+						type: "adaptive",
+					},
+					output_config: {
+						effort: "high",
+					},
+				}
+			} else {
+				additionalModelRequestFields = {
+					thinking: {
+						type: "enabled",
+						budget_tokens: metadata?.thinking?.maxThinkingTokens || modelConfig.reasoningBudget || 4096,
+					},
+				}
 			}
+
 			logger.info("Extended thinking enabled for Bedrock request", {
 				ctx: "bedrock",
 				modelId: modelConfig.id,