diff --git a/dist/index.js b/dist/index.js
--- a/dist/index.js
+++ b/dist/index.js
@@ -934,6 +934,10 @@ var anthropicLanguageModelOptions = import_v43.z.object({
    */
   effort: import_v43.z.enum(["low", "medium", "high", "xhigh", "max"]).optional(),
   /**
+   * Raw Anthropic `output_config` passthrough for Anthropic-compatible endpoints.
+   */
+  output_config: import_v43.z.record(import_v43.z.string(), import_v43.z.any()).optional(),
+  /**
    * Task budget for agentic turns. Informs the model of the total token budget
    * available for the current task, allowing it to prioritize work and wind down
    * gracefully as the budget is consumed.
@@ -3070,8 +3074,9 @@ var AnthropicMessagesLanguageModel = class {
           ...thinkingDisplay != null && { display: thinkingDisplay }
         }
       },
-      ...((anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
+      ...(Object.keys((anthropicOptions == null ? void 0 : anthropicOptions.output_config) ?? {}).length > 0 || (anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
         output_config: {
+          ...(anthropicOptions == null ? void 0 : anthropicOptions.output_config),
           ...(anthropicOptions == null ? void 0 : anthropicOptions.effort) && {
             effort: anthropicOptions.effort
           },
diff --git a/dist/index.mjs b/dist/index.mjs
--- a/dist/index.mjs
+++ b/dist/index.mjs
@@ -929,6 +929,10 @@ var anthropicLanguageModelOptions = z3.object({
    */
   effort: z3.enum(["low", "medium", "high", "xhigh", "max"]).optional(),
   /**
+   * Raw Anthropic `output_config` passthrough for Anthropic-compatible endpoints.
+   */
+  output_config: z3.record(z3.string(), z3.any()).optional(),
+  /**
    * Task budget for agentic turns. Informs the model of the total token budget
    * available for the current task, allowing it to prioritize work and wind down
    * gracefully as the budget is consumed.
@@ -3107,8 +3111,9 @@ var AnthropicMessagesLanguageModel = class {
           ...thinkingDisplay != null && { display: thinkingDisplay }
         }
       },
-      ...((anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
+      ...(Object.keys((anthropicOptions == null ? void 0 : anthropicOptions.output_config) ?? {}).length > 0 || (anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
         output_config: {
+          ...(anthropicOptions == null ? void 0 : anthropicOptions.output_config),
           ...(anthropicOptions == null ? void 0 : anthropicOptions.effort) && {
             effort: anthropicOptions.effort
           },
diff --git a/dist/index.d.ts b/dist/index.d.ts
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -178,9 +178,10 @@ declare const anthropicLanguageModelOptions: z.ZodObject<{
         high: "high";
         xhigh: "xhigh";
         max: "max";
     }>>;
+    output_config: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodAny>>;
     taskBudget: z.ZodOptional<z.ZodObject<{
         type: z.ZodLiteral<"tokens">;
         total: z.ZodNumber;
         remaining: z.ZodOptional<z.ZodNumber>;
     }, z.core.$strip>>;
diff --git a/dist/index.d.mts b/dist/index.d.mts
--- a/dist/index.d.mts
+++ b/dist/index.d.mts
@@ -178,9 +178,10 @@ declare const anthropicLanguageModelOptions: z.ZodObject<{
         high: "high";
         xhigh: "xhigh";
         max: "max";
     }>>;
+    output_config: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodAny>>;
     taskBudget: z.ZodOptional<z.ZodObject<{
         type: z.ZodLiteral<"tokens">;
         total: z.ZodNumber;
         remaining: z.ZodOptional<z.ZodNumber>;
     }, z.core.$strip>>;
diff --git a/dist/internal/index.js b/dist/internal/index.js
--- a/dist/internal/index.js
+++ b/dist/internal/index.js
@@ -926,6 +926,10 @@ var anthropicLanguageModelOptions = import_v43.z.object({
    */
   effort: import_v43.z.enum(["low", "medium", "high", "xhigh", "max"]).optional(),
   /**
+   * Raw Anthropic `output_config` passthrough for Anthropic-compatible endpoints.
+   */
+  output_config: import_v43.z.record(import_v43.z.string(), import_v43.z.any()).optional(),
+  /**
    * Task budget for agentic turns. Informs the model of the total token budget
    * available for the current task, allowing it to prioritize work and wind down
    * gracefully as the budget is consumed.
@@ -3062,8 +3066,9 @@ var AnthropicMessagesLanguageModel = class {
           ...thinkingDisplay != null && { display: thinkingDisplay }
         }
       },
-      ...((anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
+      ...(Object.keys((anthropicOptions == null ? void 0 : anthropicOptions.output_config) ?? {}).length > 0 || (anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
         output_config: {
+          ...(anthropicOptions == null ? void 0 : anthropicOptions.output_config),
           ...(anthropicOptions == null ? void 0 : anthropicOptions.effort) && {
             effort: anthropicOptions.effort
           },
diff --git a/dist/internal/index.mjs b/dist/internal/index.mjs
--- a/dist/internal/index.mjs
+++ b/dist/internal/index.mjs
@@ -913,6 +913,10 @@ var anthropicLanguageModelOptions = z3.object({
    */
   effort: z3.enum(["low", "medium", "high", "xhigh", "max"]).optional(),
   /**
+   * Raw Anthropic `output_config` passthrough for Anthropic-compatible endpoints.
+   */
+  output_config: z3.record(z3.string(), z3.any()).optional(),
+  /**
    * Task budget for agentic turns. Informs the model of the total token budget
    * available for the current task, allowing it to prioritize work and wind down
    * gracefully as the budget is consumed.
@@ -3091,8 +3095,9 @@ var AnthropicMessagesLanguageModel = class {
           ...thinkingDisplay != null && { display: thinkingDisplay }
         }
       },
-      ...((anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
+      ...(Object.keys((anthropicOptions == null ? void 0 : anthropicOptions.output_config) ?? {}).length > 0 || (anthropicOptions == null ? void 0 : anthropicOptions.effort) || (anthropicOptions == null ? void 0 : anthropicOptions.taskBudget) || useStructuredOutput && (responseFormat == null ? void 0 : responseFormat.type) === "json" && responseFormat.schema != null) && {
         output_config: {
+          ...(anthropicOptions == null ? void 0 : anthropicOptions.output_config),
           ...(anthropicOptions == null ? void 0 : anthropicOptions.effort) && {
             effort: anthropicOptions.effort
           },