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xAIHow to use Grok 3 Fast Latest with your xAI API key on TypingMind
Learn how to access and use Grok 3 Fast Latest with your xAI API key through TypingMind. Get started with this AI model in minutes.
Grok is SpaceXAI's flagship family of large language models designed to deliver truthful and insightful AI responses. The SpaceXAI API provides developers with access to powerful models including Grok-4 and Grok-2-1212 (with a 131K token context window), supporting multimodal capabilities like vision processing and image generation via Flux.1. Key features include function calling for API automation, compatibility with OpenAI/Anthropic SDKs, structured outputs, and enterprise-grade security with GDPR/HIPAA compliance. The platform offers Python and JavaScript SDKs for easy integration into applications ranging from conversational AI to complex workflow automation.
See the official xAI documentation for more details.
Grok 3 Fast Latest Overview
| Model Name | Grok 3 Fast Latest |
| Provider | xAI |
| Model ID | grok-3-fast-latest |
| Model Logo | Get the logo URL |
| Release Date | Feb 17, 2025 |
| Last Updated | Feb 17, 2025 |
| Knowledge Cutoff | 2024-11 |
| Context Window | 131,072 tokens |
| Max Output | 8,192 tokens |
| Pricing /1M tokens | $5.00 input $25.00 output $1.25 cache read |
| Input Modalities | text |
| Output Modalities | text |
| Capabilities | Tool CallingTemperature Control |
Complete Setup Guide
Get Your xAI API Key
First, you'll need to obtain an API key from xAI. This key allows you to access their AI models directly and pay only for what you use.
- Visit xAI'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 xAI API Key
Option 1: Use the built-in SpaceXAI provider (recommended)
The quickest way. TypingMind already has SpaceXAI set up, so you only need to add your API key.
- Open TypingMind and click "Models" in the left sidebar.
- Search for SpaceXAI.
- Click the settings (gear) button next to SpaceXAI.
- 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:Grok 3 Fast Latest via xAI(or your preferred name)Model ID:grok-3-fast-latestfor example (check xAI model list)Context Length: Enter the model's context window (e.g., 131072 for grok-3-fast-latest)
Set up authentication
In the "Authentication" tab, set the connection details:
API Type:OpenAI Chat Completions APIEndpoint URL:https://api.x.ai/v1/chat/completionsAuthentication Type:API Key via HTTP HeaderHeader Key:AuthorizationHeader Value:Bearer <GROK_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 Grok 3 Fast Latest
Now you can start chatting with Grok 3 Fast Latest through TypingMind:
- Select Grok 3 Fast Latest 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 Grok 3 Fast Latest with web search, code execution, and more (How to use plugins)
Why TypingMind + xAI?
Chat with Grok 3 Fast Latest and 200+ other models in one workspace, using your own xAI API key.
Best-in-class UI
TypingMind's interface is far superior to standard chat UIs.
Model flexibility
Switch between Grok 3 Fast Latest and 200+ models instantly.
Cost control
Pay only for what you use through xAI.
One-time purchase
Buy TypingMind once, use forever with any xAI model.
Data privacy
Your conversations are stored locally by default, not on external servers.
Plugins, MCP, Skills & AI agents
Extend Grok 3 Fast Latest with web search, image generation, and custom AI agents.
Frequently Asked Questions
Do I need a subscription to use Grok 3 Fast Latest?
No. With your own xAI 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 Grok 3 Fast Latest?
Grok 3 Fast Latest costs $5.00/1M input tokens and $25.00/1M output tokens via xAI. A typical conversation costs around $0.01-0.10, depending on length.
Can I use other models besides Grok 3 Fast Latest?
Yes. Any model your xAI 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 Grok 3 Fast Latest 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 xAI with your API key, so check xAI's data policy for how it handles API requests.
