diff --git a/.changeset/gateway-caching-provider-option.md b/.changeset/gateway-caching-provider-option.md
new file mode 100644
index 000000000000..3b33cef167ad
--- /dev/null
+++ b/.changeset/gateway-caching-provider-option.md
@@ -0,0 +1,5 @@
+---
+'@ai-sdk/gateway': patch
+---
+
+Add `caching: 'auto'` to `GatewayProviderOptions`.
diff --git a/content/providers/01-ai-sdk-providers/00-ai-gateway.mdx b/content/providers/01-ai-sdk-providers/00-ai-gateway.mdx
index 67d75c6cc008..855d04cf8443 100644
--- a/content/providers/01-ai-sdk-providers/00-ai-gateway.mdx
+++ b/content/providers/01-ai-sdk-providers/00-ai-gateway.mdx
@@ -794,6 +794,12 @@ The following gateway provider options are available:
 
   Example: `models: ['openai/gpt-5.4-nano', 'gemini-3-flash-preview']` will try the fallback models in order if the primary model fails.
 
+- **caching** _'auto'_
+
+  Enables automatic prompt caching. When set to `'auto'`, AI Gateway automatically applies the appropriate caching strategy based on the routed provider.
+
+  Example: `caching: 'auto'` will let AI Gateway add cache markers for providers that require explicit prompt caching.
+
 - **user** _string_
 
   Optional identifier for the end user on whose behalf the request is being made. This is used for spend tracking and attribution purposes, allowing you to track usage per end-user in your application.
diff --git a/packages/gateway/src/gateway-language-model.test.ts b/packages/gateway/src/gateway-language-model.test.ts
index aea062f96114..f380e416ebdf 100644
--- a/packages/gateway/src/gateway-language-model.test.ts
+++ b/packages/gateway/src/gateway-language-model.test.ts
@@ -6,6 +6,7 @@ import { createTestServer } from '@ai-sdk/test-server/with-vitest';
 import { convertReadableStreamToArray } from '@ai-sdk/provider-utils/test';
 import { GatewayLanguageModel } from './gateway-language-model';
 import type { GatewayConfig } from './gateway-config';
+import type { GatewayProviderOptions } from './gateway-provider-options';
 import {
   GatewayAuthenticationError,
   GatewayRateLimitError,
@@ -1523,18 +1524,24 @@ describe('GatewayLanguageModel', () => {
         content: { type: 'text', text: 'Test response' },
       });
 
+      const gatewayOptions = {
+        order: ['anthropic', 'bedrock', 'openai'],
+        caching: 'auto',
+      } satisfies GatewayProviderOptions;
+
       await createTestModel().doGenerate({
         prompt: TEST_PROMPT,
         providerOptions: {
-          gateway: {
-            order: ['anthropic', 'bedrock', 'openai'],
-          },
+          gateway: gatewayOptions,
         },
       });
 
       const requestBody = await server.calls[0].requestBodyJson;
       expect(requestBody.providerOptions).toEqual({
-        gateway: { order: ['anthropic', 'bedrock', 'openai'] },
+        gateway: {
+          order: ['anthropic', 'bedrock', 'openai'],
+          caching: 'auto',
+        },
       });
     });
 
diff --git a/packages/gateway/src/gateway-provider-options.test-d.ts b/packages/gateway/src/gateway-provider-options.test-d.ts
new file mode 100644
index 000000000000..962faa3daf30
--- /dev/null
+++ b/packages/gateway/src/gateway-provider-options.test-d.ts
@@ -0,0 +1,12 @@
+import { describe, expectTypeOf, it } from 'vitest';
+import type { GatewayProviderOptions } from './gateway-provider-options';
+
+describe('GatewayProviderOptions type', () => {
+  it('should allow automatic caching', () => {
+    const options = {
+      caching: 'auto',
+    } satisfies GatewayProviderOptions;
+
+    expectTypeOf(options).toMatchTypeOf<GatewayProviderOptions>();
+  });
+});
diff --git a/packages/gateway/src/gateway-provider-options.ts b/packages/gateway/src/gateway-provider-options.ts
index 25ef891a80a4..33ae7dd54ef2 100644
--- a/packages/gateway/src/gateway-provider-options.ts
+++ b/packages/gateway/src/gateway-provider-options.ts
@@ -49,6 +49,11 @@ const gatewayProviderOptions = lazySchema(() =>
        * Example: `['openai/gpt-5-nano', 'zai/glm-4.6']` will try `openai/gpt-5-nano` first, then `zai/glm-4.6` as fallback.
        */
       models: z.array(z.string()).optional(),
+      /**
+       * Whether AI Gateway should automatically apply the appropriate prompt
+       * caching strategy based on the routed provider.
+       */
+      caching: z.enum(['auto']).optional(),
       /**
        * Request-scoped BYOK credentials to use instead of cached credentials.
        *