TypingMind×
OpenAIHow to use GPT-4o (2024-11-20) with your OpenAI API key on TypingMind
Learn how to access and use GPT-4o (2024-11-20) with your OpenAI API key through TypingMind. Get started with this AI model in minutes.
GPT model for general reasoning, writing, coding, and tool-assisted tasks
ChatGPT is OpenAI's conversational AI assistant now powered by the latest GPT-5 family of models released in 2025, featuring unified multimodal capabilities across text, images, and audio with advanced reasoning.
The current lineup includes GPT-5 (flagship general-purpose model with real-time routing, faster responses, reduced hallucinations, and customizable personalities), o3 (advanced reasoning model for complex math, science, and programming with 88.9% AIME accuracy), o4-mini (cost-efficient reasoning at scale with 92.7% AIME accuracy), and GPT-5-Codex (specialized for dynamic coding tasks).
Key features include autonomous tool use (web browsing, code execution, file operations), self-fact checking, multimodal unification, and variants from Nano to Pro for different use cases.
See the official OpenAI documentation for more details.
GPT-4o (2024-11-20) Overview
| Model Name | GPT-4o (2024-11-20) |
| Provider | OpenAI |
| Model ID | gpt-4o-2024-11-20 |
| Model Logo | Get the logo URL |
| Release Date | Nov 20, 2024 |
| Last Updated | Nov 20, 2024 |
| Knowledge Cutoff | 2023-09 |
| Context Window | 128,000 tokens |
| Max Output | 16,384 tokens |
| Pricing /1M tokens | $2.50 input $10.00 output $1.25 cache read |
| Input Modalities | text, image |
| Output Modalities | text |
| Capabilities | File UploadTool CallingStructured OutputTemperature Control |
Complete Setup Guide
Get Your OpenAI API Key
First, you'll need to obtain an API key from OpenAI. This key allows you to access their AI models directly and pay only for what you use.
- Visit OpenAI's API console
- Sign up or log in to your account
- Navigate to the API keys section
- Generate a new API key (copy it immediately as some providers only show it once)
- Save your API key in a secure password manager or encrypted note
Sometimes, this provider will require you to add a payment method to your account before you can use your API key to chat with AI. So, to avoid any hiccups, make sure you've got a payment method set up and ready to go!
Important: Keep your API key secure and never share it publicly. Store it safely as you'll need it to connect with TypingMind.
Configure TypingMind with OpenAI API Key
Option 1: Use the built-in OpenAI provider (recommended)
The quickest way. TypingMind already has OpenAI set up, so you only need to add your API key.
- Open TypingMind and click "Models" in the left sidebar.
- Search for OpenAI.
- Click the settings (gear) button next to OpenAI.
- Paste your API key and save.
Option 2: Add the model manually
If you can't find the provider or model ID in the official list, you can add the model manually:
Open the Models page
Open TypingMind, click "Models" in the left sidebar, then click "Add custom model" in the top right corner.
Enter the model details
Keep "Create Manually" selected and fill in the model details:
Name:GPT-4o (2024-11-20) via OpenAI(or your preferred name)Model ID:gpt-4o-2024-11-20Context Length: Enter the model's context window (e.g., 128000 for gpt-4o-2024-11-20)
Set up authentication
In the "Authentication" tab, set the connection details:
API Type:OpenAI Chat Completions APIEndpoint URL:https://api.openai.com/v1/chat/completionsAuthentication Type:API Key via HTTP HeaderHeader Key:AuthorizationHeader Value:Bearer <OPENAI_API_KEY>
Add pricing (optional)
Open the "Pricing" tab and enter the model's input, output, and cache prices per 1M tokens so TypingMind can estimate your usage costs.
Check the capabilities
In the "Capabilities" tab, keep "Auto check capabilities on save" on so TypingMind detects supported features like plugins, image input, and thinking, or enable them manually.
Test and save
Click "Test & Save" to verify the connection and add the model.
Start chatting with GPT-4o (2024-11-20)
Now you can start chatting with GPT-4o (2024-11-20) through TypingMind:
- Select GPT-4o (2024-11-20) from the model dropdown menu
- Start typing your message in the chat input
- Enjoy faster responses and better features than the official interface
- Switch between different AI models as needed
💡 Pro tips for better results:
- Use specific, detailed prompts for better responses (How to use Prompt Library)
- Create AI agents with custom instructions for repeated tasks (How to create AI Agents)
- Use plugins to extend GPT-4o (2024-11-20) with web search, code execution, and more (How to use plugins)
- Upload documents and images directly to chat for AI analysis and discussion (Chat with documents)
Why TypingMind + OpenAI?
Chat with GPT-4o (2024-11-20) and 200+ other models in one workspace, using your own OpenAI API key.
Best-in-class UI
TypingMind's interface is far superior to standard chat UIs.
Model flexibility
Switch between GPT-4o (2024-11-20) and 200+ models instantly.
Cost control
Pay only for what you use through OpenAI.
One-time purchase
Buy TypingMind once, use forever with any OpenAI model.
Data privacy
Your conversations are stored locally by default, not on external servers.
Plugins, MCP, Skills & AI agents
Extend GPT-4o (2024-11-20) with web search, image generation, and custom AI agents.
Frequently Asked Questions
Do I need a subscription to use GPT-4o (2024-11-20)?
No. With your own OpenAI API key, you pay only for what you use, with no monthly subscription. TypingMind is also a one-time purchase, not a subscription.
How much does it cost to use GPT-4o (2024-11-20)?
GPT-4o (2024-11-20) costs $2.50/1M input tokens and $10.00/1M output tokens via OpenAI. A typical conversation costs around $0.01-0.10, depending on length.
Can I use other models besides GPT-4o (2024-11-20)?
Yes. Any model your OpenAI API key can access works in TypingMind, and you can switch between it and models from other providers in the same chat.
Is my data private when using GPT-4o (2024-11-20) with TypingMind?
TypingMind stores your conversations locally (in your browser on the web version, on your device in the desktop app). Your messages are sent to OpenAI with your API key, so check OpenAI's data policy for how it handles API requests.
