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Fireworks AIHow to use DeepSeek V4 Pro with your Fireworks AI API key on TypingMind
Learn how to access and use DeepSeek V4 Pro with your Fireworks AI API key through TypingMind. Get started with this AI model in minutes.
Open MoE flagship with million-token context for coding and long agent runs
Fireworks.ai is a high-performance generative AI platform that provides the fastest inference for open-source LLMs and multimodal models through a developer-friendly API.
The platform features a proprietary FireAttention engine delivering 50% faster speed and 250% higher throughput than standard engines, with support for popular models like LLaMA, Mixtral, DeepSeek, and Falcon. Key capabilities include serverless inference, advanced fine-tuning (LoRA, RLHF), function calling, batch processing, on-demand GPU access (NVIDIA H100/H200, AMD MI300X), and OpenAI-compatible APIs.
See the official Fireworks AI documentation for more details.
DeepSeek V4 Pro Overview
| Model Name | DeepSeek V4 Pro |
| Provider | Fireworks AI |
| Model ID | accounts/fireworks/models/deepseek-v4-pro |
| Model Logo | Get the logo URL |
| Release Date | Apr 24, 2026 |
| Last Updated | Apr 24, 2026 |
| Knowledge Cutoff | 2025-05 |
| Context Window | 1,000,000 tokens |
| Max Output | 384,000 tokens |
| Pricing /1M tokens | $1.74 input $3.48 output $0.145 cache read |
| Input Modalities | text |
| Output Modalities | text |
| Capabilities | ReasoningTool CallingStructured OutputTemperature ControlOpen Weights |
Complete Setup Guide
Get Your Fireworks AI API Key
First, you'll need to obtain an API key from Fireworks AI. This key allows you to access their AI models directly and pay only for what you use.
- Visit Fireworks AI'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 Fireworks AI API Key
Option 1: Use the built-in Fireworks AI provider (recommended)
The quickest way. TypingMind already has Fireworks AI set up, so you only need to add your API key.
- Open TypingMind and click "Models" in the left sidebar.
- Search for Fireworks AI.
- Click the settings (gear) button next to Fireworks AI.
- 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:DeepSeek V4 Pro via Fireworks AI(or your preferred name)Model ID:accounts/fireworks/models/deepseek-v4-profor example (check Fireworks AI model list)Context Length: Enter the model's context window (e.g., 1000000 for accounts/fireworks/models/deepseek-v4-pro)
Set up authentication
In the "Authentication" tab, set the connection details:
API Type:OpenAI Chat Completions APIEndpoint URL:https://api.fireworks.ai/inference/v1/chat/completionsAuthentication Type:API Key via HTTP HeaderHeader Key:AuthorizationHeader Value:Bearer <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 DeepSeek V4 Pro
Now you can start chatting with DeepSeek V4 Pro through TypingMind:
- Select DeepSeek V4 Pro 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 DeepSeek V4 Pro with web search, code execution, and more (How to use plugins)
Why TypingMind + Fireworks AI?
Chat with DeepSeek V4 Pro and 200+ other models in one workspace, using your own Fireworks AI API key.
Best-in-class UI
TypingMind's interface is far superior to standard chat UIs.
Model flexibility
Switch between DeepSeek V4 Pro and 200+ models instantly.
Cost control
Pay only for what you use through Fireworks AI.
One-time purchase
Buy TypingMind once, use forever with any Fireworks AI model.
Data privacy
Your conversations are stored locally by default, not on external servers.
Plugins, MCP, Skills & AI agents
Extend DeepSeek V4 Pro with web search, image generation, and custom AI agents.
Frequently Asked Questions
Do I need a subscription to use DeepSeek V4 Pro?
No. With your own Fireworks AI 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 DeepSeek V4 Pro?
DeepSeek V4 Pro costs $1.74/1M input tokens and $3.48/1M output tokens via Fireworks AI. A typical conversation costs around $0.01-0.10, depending on length.
Can I use other models besides DeepSeek V4 Pro?
Yes. Any model your Fireworks AI 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 DeepSeek V4 Pro 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 Fireworks AI with your API key, so check Fireworks AI's data policy for how it handles API requests.
