diff --git a/open-sse/config/providerRegistry.ts b/open-sse/config/providerRegistry.ts
index 6e8c696e23..fb304d7964 100644
--- a/open-sse/config/providerRegistry.ts
+++ b/open-sse/config/providerRegistry.ts
@@ -1066,6 +1066,12 @@ const _REGISTRY_EAGER: Record<string, RegistryEntry> = {
     },
     models: [
       { id: "auto-kiro", name: "Auto (Kiro picks best model)" },
+      {
+        id: "claude-opus-4.8",
+        name: "Claude Opus 4.8",
+        contextLength: 1000000,
+        maxOutputTokens: 128000,
+      },
       {
         id: "claude-opus-4.7",
         name: "Claude Opus 4.7",
diff --git a/src/shared/constants/pricing.ts b/src/shared/constants/pricing.ts
index e91703b036..b5c29cf8d1 100644
--- a/src/shared/constants/pricing.ts
+++ b/src/shared/constants/pricing.ts
@@ -1304,6 +1304,20 @@ export const DEFAULT_PRICING = {
       reasoning: 15.0,
       cache_creation: 3.0,
     },
+    "claude-opus-4.8": {
+      input: 15.0,
+      output: 75.0,
+      cached: 7.5,
+      reasoning: 75.0,
+      cache_creation: 15.0,
+    },
+    "claude-opus-4.7": {
+      input: 15.0,
+      output: 75.0,
+      cached: 7.5,
+      reasoning: 75.0,
+      cache_creation: 15.0,
+    },
     "claude-opus-4.6": {
       input: 15.0,
       output: 75.0,
diff --git a/tests/unit/catalog-updates-v3x.test.ts b/tests/unit/catalog-updates-v3x.test.ts
index c93bedff3b..4b97773344 100644
--- a/tests/unit/catalog-updates-v3x.test.ts
+++ b/tests/unit/catalog-updates-v3x.test.ts
@@ -3,6 +3,7 @@ import assert from "node:assert/strict";
 
 import { getModelsByProviderId } from "../../open-sse/config/providerModels.ts";
 import { resolveCanonicalProviderModel } from "../../open-sse/services/model.ts";
+import { DEFAULT_PRICING } from "../../src/shared/constants/pricing.ts";
 
 test("Pollinations catalog mirrors the current public text model lineup", () => {
   const models = getModelsByProviderId("pollinations");
@@ -45,3 +46,19 @@ test("NVIDIA catalog includes the verified 2026 additions and GPT OSS 20B alias
     model: "openai/gpt-oss-20b",
   });
 });
+
+test("Kiro catalog exposes Claude Opus 4.8 alongside 4.7 with matching pricing", () => {
+  const models = getModelsByProviderId("kiro");
+  const ids = new Set(models.map((model) => model.id));
+
+  assert.ok(ids.has("claude-opus-4.8"), "kiro must expose claude-opus-4.8");
+  assert.ok(ids.has("claude-opus-4.7"), "kiro must still expose claude-opus-4.7");
+
+  const opus48 = models.find((model) => model.id === "claude-opus-4.8");
+  assert.equal(opus48?.contextLength, 1000000);
+  assert.equal(opus48?.maxOutputTokens, 128000);
+
+  // Pricing for the Kiro channel must cover the new model so usage cost is non-zero.
+  const kiroPricing = (DEFAULT_PRICING as Record<string, Record<string, unknown>>).kiro;
+  assert.ok(kiroPricing["claude-opus-4.8"], "kiro pricing must include claude-opus-4.8");
+});