--- title: Building a Clone of ChatGPT | Spring AI | daily.dev description: A walkthrough of building a ChatGPT-like clone using Spring AI and Java. Covers creating a REST controller endpoint, using ChatModel vs ChatClient (with... canonical: https://daily.dev/posts/building-a-clone-of-chatgpt-spring-ai-ju2nepbmk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Building a Clone of ChatGPT | Spring AI | daily.dev og:description: A walkthrough of building a ChatGPT-like clone using Spring AI and Java. Covers creating a REST controller endpoint, using ChatModel vs ChatClient (with... og:url: https://daily.dev/posts/building-a-clone-of-chatgpt-spring-ai-ju2nepbmk og:image: https://api.daily.dev/og/posts/ju2NEpbMk.png og:image:alt: Building a Clone of ChatGPT | Spring AI og:image:width: 1200 og:image:height: 630 og:locale: en --- [Telusko](https://daily.dev/sources/telusko) [Watch video](https://api.daily.dev/r/ju2NEpbMk) # [Building a Clone of ChatGPT | Spring AI](https://api.daily.dev/r/ju2NEpbMk "Go to post") A walkthrough of building a ChatGPT-like clone using Spring AI and Java. Covers creating a REST controller endpoint, using ChatModel vs ChatClient (with builder pattern), fetching response metadata including token usage and model name, and adding conversation memory via MessageChatMemoryAdvisor so the LLM can recall previous messages in a session. Also briefly explains how LLM providers charge based on token consumption. [#java](/tags/java "Check all #java posts")[#llm](/tags/llm "Check all #llm posts")[#rest-api](/tags/rest-api "Check all #rest-api posts")[#anthropic](/tags/anthropic "Check all #anthropic posts")[#spring-ai](/tags/spring-ai "Check all #spring-ai posts") Mar 15•27m watch time Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/telusko) [Telusko](https://daily.dev/sources/telusko "https://daily.dev/sources/telusko") 128 Followers • 714 Upvotes #### Would you recommend this post? 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