How Tusk Central AI works
All the top AI models in one chat. You type a question, the right model answers, and most of it is free. Here's what's happening under the hood.
Getting started takes one step
- Type your question. No setup, no model menus to study first. Just ask.
- Choose a model — or let Brainiac. Pick any model from the selector. Not sure which fits? Brainiac is one of the options in the picker: choose it and it auto-selects a model suited to your prompt, based on complexity and what you're trying to do.
- You get your answer — and you can see which model wrote it, then switch models if you'd rather steer yourself.
The models you get
Tusk Central AI brings together 30+ leading models from providers like OpenAI, xAI, Google, Anthropic, Cohere, and more. They fall into two groups:
- Fast-reasoning models handle most everyday work brilliantly, from writing and coding to analysis and quick research. These are free and unlimited.
- Deep-thinking models take more time to work through hard problems step by step, for things like advanced math, intricate logic, or nuanced decisions. You get free credits each month, then optional pay-as-you-go.
More than a chat box
- Images. Upload photos, screenshots, or diagrams and ask the AI to describe them, spot patterns, or pull out text.
- Documents. Attach text, DOCX, PDF, and other files to use as a source for your conversation.
- Web search. Built right into the chat, so answers can draw on current information.
- Location. Optional, for answers that depend on where you are.
How it stays free
We're ad-supported, like most internet services. That's what pays for unlimited access to fast models without a subscription. For deep-thinking models, you get free credits each month, and if you need more you pay tiny amounts only for what you actually use. No monthly fee, no lock-in.
The ads are contextually relevant rather than built on deep profiling, and we don't sell your conversation data.
Frequently asked questions
Is it really free? How does that work?
Yes, it's genuinely free for most models. Ads keep the lights on, which lets us offer unlimited access to fast-reasoning models without charging you. Deep-thinking models come with free monthly credits, and beyond that you only pay small amounts for what you use.
What's the difference between "fast reasoning" and "deep-thinking" models?
Fast-reasoning models are tuned for speed and handle most day-to-day tasks well. They're free and unlimited. Deep-thinking models spend longer working through complex problems in multiple steps. Think of it as the difference between a quick answer and deeper deliberation.
Will I hit usage limits or timeouts?
No daily caps or "come back later" messages on fast-reasoning models. Use them as much as you need. Deep-thinking models have no artificial restrictions either, just straightforward micro-payments once your monthly free credits run out.
Do you track my data or sell it to advertisers?
Ads keep the service free, but we don't sell your conversation data. Ads are contextually relevant, not based on deep profiling of your personal information.
What is Brainiac?
Brainiac is one of the options in the model picker. You can choose any model yourself; when you're not sure which to use, pick Brainiac and it auto-selects a model suited to your prompt. You can always see which model answered and switch.
Which models can I use?
30+ and growing, across OpenAI, xAI, Google, Anthropic, Cohere, DeepSeek, Mistral, Meta, Perplexity, and others. The full list is here, with which ones are free and which use credits.