diff --git a/apps/dashboard/src/lib/ai/create-ai-filter-handler.ts b/apps/dashboard/src/lib/ai/create-ai-filter-handler.ts
index a855c78bf..ef9e53ed0 100644
--- a/apps/dashboard/src/lib/ai/create-ai-filter-handler.ts
+++ b/apps/dashboard/src/lib/ai/create-ai-filter-handler.ts
@@ -61,14 +61,15 @@ export function createAIFilterHandler({
       const result = streamObject({
         model,
         schema: outputSchema,
-        messages: [
-          {
-            role: "system",
-            content: staticPrompt,
-            providerOptions: {
-              anthropic: { cacheControl: { type: "ephemeral" } },
-            },
+        // AI SDK v7 rejects system messages inside `messages`.
+        instructions: {
+          role: "system",
+          content: staticPrompt,
+          providerOptions: {
+            anthropic: { cacheControl: { type: "ephemeral" } },
           },
+        },
+        messages: [
           {
             role: "user",
             content: `Current date/time: ${now}\n\nQuery: ${query}`,
diff --git a/packages/ai/src/resolve-model.test.ts b/packages/ai/src/resolve-model.test.ts
index 21181ceaf..c9d7c6921 100644
--- a/packages/ai/src/resolve-model.test.ts
+++ b/packages/ai/src/resolve-model.test.ts
@@ -25,14 +25,14 @@ describe("resolveChatModel", () => {
   test("gateway path: free plan resolves the cheaper model string", () => {
     process.env.AI_GATEWAY_API_KEY = "gw-key";
     expect(resolveChatModel({ plan: "free" })).toBe(
-      "anthropic/claude-haiku-4.5",
+      "anthropic/claude-haiku-5.5",
     );
   });
 
   test("gateway path: paid plan resolves the stronger model string", () => {
     process.env.AI_GATEWAY_API_KEY = "gw-key";
     expect(resolveChatModel({ plan: "team" })).toBe(
-      "anthropic/claude-sonnet-5",
+      "anthropic/claude-sonnet-5.5",
     );
   });
 
diff --git a/packages/ai/src/resolve-model.ts b/packages/ai/src/resolve-model.ts
index 97916aea0..f81c47551 100644
--- a/packages/ai/src/resolve-model.ts
+++ b/packages/ai/src/resolve-model.ts
@@ -5,8 +5,8 @@ import type { LanguageModel } from "ai";
 // Hosted openstatus.dev defaults, resolved through the Vercel AI Gateway as
 // bare model strings. Free workspaces get the cheaper model because we pay for
 // their inference; this tiering applies ONLY to the gateway path.
-const GATEWAY_MODEL_FREE = "anthropic/claude-haiku-4.5";
-const GATEWAY_MODEL_PAID = "anthropic/claude-sonnet-5";
+const GATEWAY_MODEL_FREE = "anthropic/claude-haiku-5.5";
+const GATEWAY_MODEL_PAID = "anthropic/claude-sonnet-5.5";
 
 // `||` (not `??`) so empty / whitespace-only env values fall back instead of
 // being passed through as a real value.