add routing priority for 4.5

Author: charleslien

backend/src/llm-apis/openrouter.ts

@@ -12,6 +12,11 @@ const providerOrder = {
     'Anthropic',
     'Amazon Bedrock',
   ],
+  [models.openrouter_claude_sonnet_4_5]: [
+    'Google',
+    'Anthropic',
+    'Amazon Bedrock',
+  ],
   [models.openrouter_claude_opus_4]: ['Google', 'Anthropic'],
 } as const
 

common/src/old-constants.ts

@@ -194,6 +194,7 @@ export const geminiModels = {
 export type GeminiModel = (typeof geminiModels)[keyof typeof geminiModels]
 
 export const openrouterModels = {
+  openrouter_claude_sonnet_4_5: 'anthropic/claude-4.5-sonnet',
   openrouter_claude_sonnet_4: 'anthropic/claude-4-sonnet-20250522',
   openrouter_claude_opus_4: 'anthropic/claude-opus-4.1',
   openrouter_claude_3_5_haiku: 'anthropic/claude-3.5-haiku-20241022',
@@ -259,6 +260,7 @@ export const shortModelNames = {
   'gemini-2.5-pro': models.openrouter_gemini2_5_pro_preview,
   'flash-2.5': models.openrouter_gemini2_5_flash,
   'opus-4': models.openrouter_claude_opus_4,
+  'sonnet-4.5': models.openrouter_claude_sonnet_4_5,
   'sonnet-4': models.openrouter_claude_sonnet_4,
   'sonnet-3.7': models.openrouter_claude_sonnet_4,
   'sonnet-3.6': models.openrouter_claude_3_5_sonnet,