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CerebrasHow to use GPT OSS 120B with your Cerebras API key on TypingMind
Learn how to access and use GPT OSS 120B with your Cerebras API key through TypingMind. Get started with this AI model in minutes.
Open GPT reasoning model for self-hosted agents and controllable deployments
Cerebras runs AI models on its wafer-scale chips, delivering some of the fastest inference available, often thousands of tokens per second. Its cloud offers open models such as gpt-oss 120B and Qwen through a serverless API.
Cerebras uses pay-per-token pricing and an OpenAI-compatible Chat Completions endpoint, so it works with any OpenAI-compatible client.
See the official Cerebras documentation for more details.
GPT OSS 120B Overview
| Model Name | GPT OSS 120B |
| Provider | Cerebras |
| Model ID | gpt-oss-120b |
| Model Logo | Get the logo URL |
| Release Date | Aug 5, 2025 |
| Last Updated | Jun 10, 2026 |
| Context Window | 131,072 tokens |
| Max Output | 40,960 tokens |
| Pricing /1M tokens | $0.35 input $0.75 output |
| Input Modalities | text |
| Output Modalities | text |
| Capabilities | ReasoningTool CallingStructured OutputTemperature ControlOpen Weights |
Complete Setup Guide
Get Your Cerebras API Key
First, you'll need to obtain an API key from Cerebras. This key allows you to access their AI models directly and pay only for what you use.
- Visit Cerebras'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 Cerebras API Key
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 OSS 120B via Cerebras(or your preferred name)Model ID:gpt-oss-120bfor example (check Cerebras model list)Context Length: Enter the model's context window (e.g., 131072 for gpt-oss-120b)
Set up authentication
In the "Authentication" tab, set the connection details:
API Type:OpenAI Chat Completions APIEndpoint URL:https://api.cerebras.ai/v1/chat/completionsAuthentication Type:API Key via HTTP HeaderHeader Key:AuthorizationHeader Value:Bearer <CEREBRAS_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 OSS 120B
Now you can start chatting with GPT OSS 120B through TypingMind:
- Select GPT OSS 120B 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 OSS 120B with web search, code execution, and more (How to use plugins)
Why TypingMind + Cerebras?
Chat with GPT OSS 120B and 200+ other models in one workspace, using your own Cerebras API key.
Best-in-class UI
TypingMind's interface is far superior to standard chat UIs.
Model flexibility
Switch between GPT OSS 120B and 200+ models instantly.
Cost control
Pay only for what you use through Cerebras.
One-time purchase
Buy TypingMind once, use forever with any Cerebras model.
Data privacy
Your conversations are stored locally by default, not on external servers.
Plugins, MCP, Skills & AI agents
Extend GPT OSS 120B with web search, image generation, and custom AI agents.
Frequently Asked Questions
Do I need a subscription to use GPT OSS 120B?
No. With your own Cerebras 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 OSS 120B?
GPT OSS 120B costs $0.35/1M input tokens and $0.75/1M output tokens via Cerebras. A typical conversation costs around $0.01-0.10, depending on length.
Can I use other models besides GPT OSS 120B?
Yes. Any model your Cerebras 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 OSS 120B 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 Cerebras with your API key, so check Cerebras's data policy for how it handles API requests.
