Add opus 4.8 (#3182)

* Add opus 4.8

* update alias

* handling opus 48 omit temperature

src/backend/drivers/ai-chat/providers/claude/ClaudeProvider.ts

@@ -229,10 +229,13 @@ export class ClaudeProvider implements IChatProvider {
             reasoningEffort: requestedReasoningEffort,
             maxTokens: max_tokens,
         });
-        // Opus 4.7 errors on non-default sampling params; omit temperature entirely.
+        // Opus 4.7 and 4.8 error on non-default sampling params; omit temperature entirely.
         // Other models require temperature=1 when thinking is enabled.
-        const isOpus47 = modelUsed.id === 'claude-opus-4-7';
-        const resolvedTemperature = isOpus47
+        const omitsTemperature = [
+            'claude-opus-4-7',
+            'claude-opus-4-8',
+        ].includes(modelUsed.id);
+        const resolvedTemperature = omitsTemperature
             ? undefined
             : thinkingConfig
               ? 1

src/backend/drivers/ai-chat/providers/claude/models.ts

@@ -21,6 +21,37 @@ import type { IChatModel } from '../../types.js';
 
 // Hardcoded from https://models.dev/api.json
 export const CLAUDE_MODELS: IChatModel[] = [
+    {
+        puterId: 'anthropic:anthropic/claude-opus-4-8',
+        id: 'claude-opus-4-8',
+        modalities: { input: ['text', 'image', 'pdf'], output: ['text'] },
+        open_weights: false,
+        tool_call: true,
+        knowledge: '2026-01',
+        release_date: '2026-05-28',
+        aliases: [
+            'claude-opus',
+            'claude-opus-latest',
+            'claude-opus-4-8-latest',
+            'claude-opus-4.8',
+            'claude-opus-4-8',
+            'anthropic/claude-opus-4-8',
+        ],
+        name: 'Claude Opus 4.8',
+        costs_currency: 'usd-cents',
+        input_cost_key: 'input_tokens',
+        output_cost_key: 'output_tokens',
+        costs: {
+            tokens: 1_000_000,
+            input_tokens: 500,
+            ephemeral_5m_input_tokens: 500 * 1.25,
+            ephemeral_1h_input_tokens: 500 * 2,
+            cache_read_input_tokens: 500 * 0.1,
+            output_tokens: 2500,
+        },
+        context: 1000000,
+        max_tokens: 128000,
+    },
     {
         puterId: 'anthropic:anthropic/claude-opus-4-7',
         id: 'claude-opus-4-7',
@@ -30,8 +61,6 @@ export const CLAUDE_MODELS: IChatModel[] = [
         knowledge: '2026-01',
         release_date: '2026-04-16',
         aliases: [
-            'claude-opus',
-            'claude-opus-latest',
             'claude-opus-4-7-latest',
             'claude-opus-4.7',
             'claude-opus-4-7',