Version Packages (#401)

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Author: github-actions[bot]

.changeset/fix-system-cache-control.md

@@ -1,5 +1,40 @@
 # @openrouter/ai-sdk-provider
 
+## 2.2.0
+
+### Minor Changes
+
+- [#399](https://github.com/OpenRouterTeam/ai-sdk-provider/pull/399) [`ad0c2e1`](https://github.com/OpenRouterTeam/ai-sdk-provider/commit/ad0c2e11ab31fe91e2d1e9ff2f218572f57706be) Thanks [@robert-j-y](https://github.com/robert-j-y)! - Fix system message cache control to use block-level format
+
+  When cache control is specified on a system message via `providerOptions`, the content is now converted to array format with `cache_control` on the text block, matching the existing behavior for user messages. This ensures consistent Anthropic prompt caching behavior across all message types.
+
+  Before (message-level cache_control):
+
+  ```json
+  {
+    "role": "system",
+    "content": "...",
+    "cache_control": { "type": "ephemeral" }
+  }
+  ```
+
+  After (block-level cache_control):
+
+  ```json
+  {
+    "role": "system",
+    "content": [
+      {
+        "type": "text",
+        "text": "...",
+        "cache_control": { "type": "ephemeral" }
+      }
+    ]
+  }
+  ```
+
+  Fixes #389
+
 ## 2.1.3
 
 ### Patch Changes

CHANGELOG.md

@@ -1,6 +1,6 @@
 {
   "name": "@openrouter/ai-sdk-provider",
-  "version": "2.1.3",
+  "version": "2.2.0",
   "license": "Apache-2.0",
   "pnpm": {
     "overrides": {