feat(providers): add Claude Opus 4.8 model

Author: waleedlatif1

apps/sim/providers/anthropic/core.ts

@@ -82,13 +82,15 @@ const THINKING_BUDGET_TOKENS: Record<string, number> = {
 
 /**
  * Checks if a model supports adaptive thinking (thinking.type: "adaptive").
- * Opus 4.7 supports ONLY adaptive thinking (no extended thinking / budget_tokens).
+ * Opus 4.8 and Opus 4.7 support ONLY adaptive thinking (no extended thinking / budget_tokens).
  * Opus 4.6 and Sonnet 4.6 support both extended and adaptive thinking — use adaptive.
  * Opus 4.5 supports effort but NOT adaptive thinking — it uses budget_tokens with type: "enabled".
  */
 function supportsAdaptiveThinking(modelId: string): boolean {
   const normalizedModel = modelId.toLowerCase()
   return (
+    normalizedModel.includes('opus-4-8') ||
+    normalizedModel.includes('opus-4.8') ||
     normalizedModel.includes('opus-4-7') ||
     normalizedModel.includes('opus-4.7') ||
     normalizedModel.includes('opus-4-6') ||

apps/sim/providers/models.ts

@@ -582,6 +582,26 @@ export const PROVIDER_DEFINITIONS: Record<string, ProviderDefinition> = {
       toolUsageControl: true,
     },
     models: [
+      {
+        id: 'claude-opus-4-8',
+        pricing: {
+          input: 5.0,
+          cachedInput: 0.5,
+          output: 25.0,
+          updatedAt: '2026-05-28',
+        },
+        capabilities: {
+          nativeStructuredOutputs: true,
+          maxOutputTokens: 128000,
+          thinking: {
+            levels: ['low', 'medium', 'high', 'xhigh', 'max'],
+            default: 'high',
+          },
+        },
+        contextWindow: 1000000,
+        releaseDate: '2026-05-27',
+        recommended: true,
+      },
       {
         id: 'claude-opus-4-7',
         pricing: {
@@ -600,7 +620,6 @@ export const PROVIDER_DEFINITIONS: Record<string, ProviderDefinition> = {
         },
         contextWindow: 1000000,
         releaseDate: '2026-04-16',
-        recommended: true,
       },
       {
         id: 'claude-opus-4-6',