feat(models): add grok-4.3

Author: waleedlatif1

apps/sim/providers/models.ts

@@ -1599,6 +1599,23 @@ export const PROVIDER_DEFINITIONS: Record<string, ProviderDefinition> = {
       toolUsageControl: true,
     },
     models: [
+      {
+        id: 'grok-4.3',
+        pricing: {
+          input: 1.25,
+          cachedInput: 0.2,
+          output: 2.5,
+          updatedAt: '2026-05-05',
+        },
+        capabilities: {
+          reasoningEffort: {
+            values: ['low', 'medium', 'high'],
+          },
+        },
+        contextWindow: 1000000,
+        releaseDate: '2026-04-30',
+        recommended: true,
+      },
       {
         id: 'grok-4-latest',
         pricing: {