[feat] better openrouter support

src/ts/model/openrouter.ts

@@ -13,10 +13,36 @@ export async function openRouterModels() {
             headers: headers
         })  
         const res = await (await aim).json()
-        return res.data.map((v:any) => {
-            return v.id
+        return res.data.map((model: any) => {
+            let name = model.name
+            let price = model.pricing.prompt
+            if(price > 0){
+                name += ` - $${(price*1000).toFixed(5)}/1k`
+            }
+            else{
+                name += " - Free"
+            }
+            return {
+                id: model.id,
+                name: name,
+                price: price,
+                context_length: model.context_length,
+            }
+        }).sort((a: any, b: any) => {
+            return a.price - b.price
+        }).filter((model: any) => {
+            return model.price >= 0
         })
     } catch (error) {
         return []
     }
+}
+
+export async function getFreeOpenRouterModel(){
+    const models = await openRouterModels()
+    return models.filter((model: any) => {
+        return model.name.endsWith("Free")
+    }).sort((a: any, b: any) => {
+        return b.context_length - a.context_length
+    })[0].id ?? ''
 }