Added the OpenRouter provider and a few models from OpenRouter (easily extendable to include more!)

app/lib/.server/llm/api-key.ts

@@ -14,6 +14,8 @@ export function getAPIKey(cloudflareEnv: Env, provider: string) {
       return env.OPENAI_API_KEY || cloudflareEnv.OPENAI_API_KEY;
     case 'Groq':
       return env.GROQ_API_KEY || cloudflareEnv.GROQ_API_KEY;
+    case 'OpenRouter':
+      return env.OPEN_ROUTER_API_KEY || cloudflareEnv.OPEN_ROUTER_API_KEY;
     default:
       return "";
   }

app/lib/.server/llm/model.ts

@@ -4,6 +4,7 @@ import { getAPIKey } from '~/lib/.server/llm/api-key';
 import { createAnthropic } from '@ai-sdk/anthropic';
 import { createOpenAI } from '@ai-sdk/openai';
 import { ollama } from 'ollama-ai-provider';
+import { createOpenRouter } from "@openrouter/ai-sdk-provider";
 
 export function getAnthropicModel(apiKey: string, model: string) {
   const anthropic = createAnthropic({
@@ -34,6 +35,14 @@ export function getOllamaModel(model: string) {
   return ollama(model);
 }
 
+export function getOpenRouterModel(apiKey: string, model: string) {
+  const openRouter = createOpenRouter({
+    apiKey
+  });
+
+  return openRouter.chat(model);
+}
+
 export function getModel(provider: string, model: string, env: Env) {
   const apiKey = getAPIKey(env, provider);
   
@@ -44,6 +53,8 @@ export function getModel(provider: string, model: string, env: Env) {
       return getOpenAIModel(apiKey, model);
     case 'Groq':
       return getGroqModel(apiKey, model);
+    case 'OpenRouter':
+      return getOpenRouterModel(apiKey, model);
     default:
       return getOllamaModel(model);
   }