Updating package

Author: jamesrochabrun

Package.resolved

@@ -85,7 +85,7 @@ struct MessageDemoView: View {
                   ], maxTokens: 2000)
                case .llama3:
                   parameters = .ollama(
-                     model: "llama3",
+                     model: "llama3.1",
                      messages: [
                         .init(role: .user, content: prompt)
                      ],

PolyAIExample/PolyAIExample.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -21,7 +21,7 @@ extension ChatCompletionObject: LLMMessageResponse {
    }
 
    public var usageMetrics: UsageMetrics {
-      ChatUsageMetrics(inputTokens: usage.promptTokens, outputTokens: usage.completionTokens, totalTokens: usage.totalTokens)
+      ChatUsageMetrics(inputTokens: usage?.promptTokens ?? 0, outputTokens: usage?.completionTokens ?? 0, totalTokens: usage?.totalTokens)
    }
 
    public var tools: [ToolUsage] {