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Building an AI-Powered iOS Chat App with Amazon Bedrock and Swift

  • Amazon Bedrock is used to build an AI-powered chat and image features in Swift for iOS app using serverless resources AWS Lambda and API Gateway for the backend.
  • The mobile application is built using Swift and integrates the models amazon.titan-image-generator-v1 and ai21.j2-mid-v1.
  • The serverless backend processing is done using AWS Lambda with TypeScript, while Amazon API Gateway is used for communication and monitoring.
  • The AI-powered iOS chat app is built using Xcode version 15 and the sample application has included features such as RESTful APIs and Amazon CloudWatch Logs.
  • To access Amazon Bedrock, the user must log in to an AWS Console, go to Amazon Bedrock, and in the left navigation click on Model access.
  • The Text Lambda is responsible for importing the client-bedrock-runtime package and adding the modelID.
  • The Image Lambda is responsible for sending a prompt to the Lambda and processing the response, which is then sent back to the mobile app for display.
  • The app includes several components: ChatMessage, APIService, BedrockView and App Entry Point.
  • The API calls may incur a small cost and the use of a token is essential for securing the API.
  • The source code for this project is available on GitHub for the backend and the iOS app.

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