How to use GPT-6 Luna with your OpenAI API key on TypingMind

Learn how to access and use GPT-6 Luna with your OpenAI API key through TypingMind. Get started with this AI model in minutes.

OpenAI's most efficient model for focused, high-volume 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-6 Luna Overview

Model NameGPT-6 Luna
ProviderOpenAI
Model IDgpt-6-luna
Model LogoGet the logo URL
Release DateSep 22, 2026
Last UpdatedSep 22, 2026
Knowledge Cutoff2026-05-18
Context Window1,050,000 tokens
Max Output128,000 tokens
Pricing /1M tokens$0.10 input
$0.50 output
$0.01 cache read
Input Modalitiestext, image, pdf
Output Modalitiestext
Capabilities
File UploadReasoningTool CallingStructured Output

Complete Setup Guide

I

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.

  1. Visit OpenAI's API console
  2. Sign up or log in to your account
  3. Navigate to the API keys section
  4. Generate a new API key (copy it immediately as some providers only show it once)
  5. 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.

II

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.

  1. Open TypingMind and click "Models" in the left sidebar.
  2. Search for OpenAI.
  3. Click the settings (gear) button next to OpenAI.
  4. Paste your API key and save.
Built-in providers with settings buttons on the TypingMind Models page

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:

  1. Open the Models page

    Open TypingMind, click "Models" in the left sidebar, then click "Add custom model" in the top right corner.

    TypingMind Models page with the Add custom model button
  2. Enter the model details

    Keep "Create Manually" selected and fill in the model details:

    Name: GPT-6 Luna via OpenAI (or your preferred name)
    Model ID: gpt-6-luna
    Context Length: Enter the model's context window (e.g., 1050000 for gpt-6-luna)
    Add Custom Model dialog in TypingMind filled in for gpt-6-luna
  3. Set up authentication

    In the "Authentication" tab, set the connection details:

    API Type: OpenAI Chat Completions API
    Endpoint URL: https://api.openai.com/v1/chat/completions
    Authentication Type: API Key via HTTP Header
    Header Key: Authorization
    Header Value: Bearer <OPENAI_API_KEY>
    OpenAI authentication settings in TypingMind
  4. 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.

    Pricing settings in TypingMind for gpt-6-luna
  5. 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.

    Custom model capabilities settings in TypingMind
  6. Test and save

    Click "Test & Save" to verify the connection and add the model.

III

Start chatting with GPT-6 Luna

Now you can start chatting with GPT-6 Luna through TypingMind:

  • Select GPT-6 Luna 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
Chat with GPT-6 Luna from OpenAI on TypingMind

💡 Pro tips for better results:

TypingMindOpenAI

Why TypingMind + OpenAI?

Chat with GPT-6 Luna 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-6 Luna 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-6 Luna with web search, image generation, and custom AI agents.

Try TypingMind for free

Frequently Asked Questions

Do I need a subscription to use GPT-6 Luna?

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-6 Luna?

GPT-6 Luna costs $0.10/1M input tokens and $0.50/1M output tokens via OpenAI. A typical conversation costs around $0.01-0.10, depending on length.

Can I use other models besides GPT-6 Luna?

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-6 Luna 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.

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