Use OpenAI Models with ChatGPT Plus/Pro Subscription

If you already have a ChatGPT Plus ($20/month) or ChatGPT Pro ($200/month) subscription, you can use your subscription quota directly in TalkCody without purchasing additional API credits.

How It Works

TalkCody uses the official OAuth authentication provided by OpenAI, which is the same authentication method used by OpenAI's official Codex CLI.

After logging in via OAuth, TalkCody can use the model quota included in your subscription, including GPT-5.2, GPT-5.2-Codex, and other models.

Terms of Use & Disclaimer

Important: Please read the following terms carefully before using this feature.

This feature is designed for personal development use only, limited to your own ChatGPT Plus/Pro subscription. By using this feature, you agree to:

Permitted Uses

✅ Personal coding assistance and productivity enhancement
✅ Compliance with OpenAI's rate limits and usage policies
✅ Not using access for commercial services or resale
✅ Adherence to OpenAI Terms of Use and Usage Policies

Prohibited Uses

❌ Commercial API resale or white-label services
❌ High-concurrency automated requests beyond personal use
❌ Using one subscription to serve multiple users
❌ Any behavior that violates OpenAI's Acceptable Use Policy

This feature uses OpenAI's official OAuth authentication (the same method as official Codex CLI). However, users are responsible for ensuring their usage complies with OpenAI's Terms of Service.

Disclaimer

This project is not affiliated with OpenAI in any way
ChatGPT, GPT, Codex are trademarks of OpenAI
This is an independent open-source project, not endorsed, sponsored, or affiliated with OpenAI
Violation of OpenAI's Terms of Service may result in account restrictions

For production or commercial use, please purchase official API credits through the OpenAI Platform API.

Configuration Steps

Open Settings

Launch TalkCody
Click the Settings icon on the left
Navigate to the API Keys page
Find the OpenAI section

In the OpenAI settings area, click the Login with OpenAI button.

The system will display an authorization URL and automatically open it in your browser.

Complete Browser Authorization

On the opened browser page, log in with your ChatGPT Plus/Pro account
Review the scope of permissions requested
Click the Authorize button to grant authorization

Wait for Automatic Callback

TalkCody starts a temporary local server to listen for the callback. After successful authorization:

Automatic mode: The system automatically receives the authorization code and completes authentication
Manual mode: If automatic callback fails, copy the complete URL from the browser address bar or the authorization code, and paste it into the TalkCody input box

The authorization code supports multiple formats: complete URL, code#state format, or code=xxx&state=yyy query string.

Verify Connection

After successful authorization, you will see:

Connection status shows as Connected
You can start using OpenAI models for conversations

After successful OAuth login, tokens will refresh automatically, no need to log in repeatedly.

View Usage

TalkCody provides a Usage Dashboard that allows you to monitor your OpenAI Plus/Pro subscription usage in real-time.

Access Usage Dashboard

Click the Usage icon in the left navigation bar
Select the OpenAI tab to view OpenAI usage

Usage Metrics Explained

OpenAI Usage Dashboard

The dashboard displays the following metrics:

5-Hour Session Usage

Content: API usage percentage in the last 5 hours
Reset Time: Time until next reset
Color Indicators:
- Green (< 50%): Normal usage
- Yellow (50-80%): Moderate usage
- Orange (80-95%): High usage
- Red (>95%): Approaching limit

7-Day Weekly Usage

Content: API usage percentage in the last 7 days
Reference Metric: Helps you understand your overall weekly usage

Credits

Balance: Your API credit balance
Unlimited: If your plan has unlimited quota, it will show "Unlimited"

Code Review Usage

Content: Usage percentage for code review feature
Description: Shows quota usage for OpenAI's code review functionality

Method	Pros	Cons
OAuth (Subscription)	Use existing subscription, no additional payment needed	Personal use only, rate limited
API Key	Higher rate limits, suitable for commercial use	Requires separate API credit purchase

What if automatic callback fails?

If automatic callback fails (e.g., port is occupied), you can:

Copy the complete callback URL from the browser address bar
Paste it into the TalkCody authorization code input box
The system will automatically parse and complete authentication