Master Flutter & Firebase by Building a ChatGPT Clone App

Name: Master Flutter & Firebase by Building a ChatGPT Clone App
Rating: 4.7 (35 reviews)

Level up your mobile dev skills by creating a full-stack ChatGPT clone with Flutter, Firebase, and Nebius AI.

Created byimcoded - Let us code you

Last updated 6/2025

English

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What you'll learn

Build a full-featured AI chat app using Flutter and Firebase from scratch, with real-time messaging and a clean, responsive UI.
Integrate Nebius AI to connect with multiple AI models (like ChatGPT and DeepSeek), and handle AI-generated responses inside your Flutter app.
Implement Google Sign-In using Firebase Authentication and securely store user chat data in Firestore.
Design scalable Flutter apps with light/dark themes, reusable widgets, and structured navigation including bottom tabs and drawers.

Course content

5 sections • 24 lectures • 4h 10m total length

Setting things up1:47
Welcome Screen UI26:42
Learn to build a welcome screen UI in Flutter for a ChatGPT app, using a stack with upper and bottom sections, safe area, and a continue button.
Theme Data0:19
You will need this in the upcoming lecture.
Theme & Take Home Assignment5:51
Navigate from the welcome screen to a home screen using push replacement and implement first-launch persistence with shared_preferences, while enabling light and dark themes and styling adjustments.
Navigation Bar6:32
Drawer UI10:09
Build a Flutter drawer with a top and bottom column, using space between, featuring an edit icon, a new chat label, settings, and a bottom login or sign up button.

Nebius API & Model5:15
AI Service Class7:38
Create an AI service class in Flutter to call a chat API using http, with API key, base URL, model, and messages payload to generate responses.
TextField with Dynamic Icon8:58
Convert a text widget to a text field with hint 'ask anything' using a text editing controller and a show-send-icon toggle in Flutter, and make the UI avoid keyboard overlap.
Testing AI Service6:05

Home Screen UI5:59
Build a Flutter home screen for a chat app by modeling chat messages and displaying a no-message state or centered cards like 'what can I help with' and 'surprise me'.
Home Screen Card8:34
Displaying Messages on Home Screen14:48
Store user and API responses in a messages list, render them with a ListView.builder, align messages by sender on the home screen, and clear input after sending while handling errors.
Enhancements12:57
Send message through Home Card4:35
Implement sending messages from the home card by toggling the send icon, clearing the input, and unfocusing after dispatch, with cards for surprise me or summarize text.

Auth Screen UI14:43
Setting Up Firebase8:55
Set up a Firebase project named ChatGPT by using the Firebase console, configure Android and iOS, install the Flutter Firebase client, enable Google sign-in, and prepare Firestore to store chats.
Sign-in with Google Account14:08
Implement a Google sign-in flow in Flutter using a dedicated auth services class, Firebase auth, and Google sign in to obtain credentials and sign in.

Logged In User Drawer15:10
Implement a logged-in user drawer using Firebase auth, switch to a get plus button when signed in, and link to a settings screen with profile details.
Settings Screen8:48
Build settings screen in Flutter, show a progress indicator when the user is null, display avatar and name when available, sign out via an auth service, then navigate home.
Store Messages in Database21:04
Read Messages from Firestore14:50
Update Drawer UI7:48
Update the drawer UI by building the upper layout, adding a search bar and new chat button, listing ChatGPT, and fetching charts from Firebase to display.
Fetch Chat History from Firebase18:52
Fetch chat history from Firebase Firestore, stream real-time chats ordered by createdat, and display them as tappable tiles with a loading indicator and option to start a new chat.

Requirements

Basic knowledge of Flutter and Dart (comfortable with widgets, state, and navigation)
A Google account to use Firebase and Google Sign-In
An OpenAI-compatible API key from Nebius AI (free tier available)
Android Studio, VS Code, or any preferred Flutter IDE installed
A physical or virtual Android/iOS device for testing

Description

Unlock the power of Flutter and Firebase by building a fully functional, real-time AI chat application inspired by ChatGPT. This hands-on course will walk you through every step of development—from creating a sleek, modern UI to integrating powerful AI models using Nebius AI.

By the end of the course, you'll not only have a complete app to showcase in your portfolio, but you'll also gain in-depth experience with real-world tools like Firebase Authentication, Firestore, and OpenAI-compatible APIs.

What You'll Learn:

Design a Sleek UI with Flutter:
Build a polished, user-friendly interface using Flutter best practices and material design principles.
Screen Setup & Navigation:
Set up multiple screens, bottom navigation bars, and a side drawer for seamless app navigation.
AI Integration with Nebius API:
Learn to connect your app to the Nebius AI platform, which allows you to use multiple large language models (LLMs) like ChatGPT, DeepSeek, and others.
Chat Logic & AI Responses:
Handle real-time messaging, user input, and asynchronous AI responses using clean, scalable chat logic.
Firebase Authentication:
Implement secure Google Sign-In with Firebase Auth for a smooth user login experience.
Store & Retrieve Messages with Firestore:
Persist user chat history in Cloud Firestore, enabling cross-device access and real-time updates.
Theming & Reusability:
Build reusable Flutter widgets and implement both light and dark mode themes to enhance user experience and code maintainability.

This course is perfect for mobile developers, Flutter learners, and tech enthusiasts who want to dive into AI-powered apps and build something both practical and impressive for 2025.

Who this course is for:

Beginner to intermediate Flutter learners who are comfortable with the basics and ready to build a full-stack, production-ready application.
Tech enthusiasts and students interested in learning how modern AI models like ChatGPT and DeepSeek can be used in mobile apps.
Freelancers or job seekers who want to build an impressive project for their portfolio or GitHub.
Mobile app developers looking to integrate advanced features like chat interfaces, user authentication, and cloud storage.

Master Flutter & Firebase by Building a ChatGPT Clone App

What you'll learn

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Course content

The UI chunk6 lectures • 51min

Integrate Nebius API4 lectures • 28min

Display User and AI chats5 lectures • 47min

Authentication logic3 lectures • 38min

Save and fetch users chat history - Firestore6 lectures • 1hr 27min

Requirements

Description

Who this course is for: