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OneBrain multi-model intelligence
Atlas combines the flagship intelligence of ChatGPT, Claude, Gemini, Grok and Perplexity. Leo combines smaller, faster models from those same leading AI families. You only describe the result you want—OneBrain finds the best model combination for the task and returns one complete answer.
OneBrain routing layer
Five model families combined into two OneBrain AIs
ChatGPT
Claude
Gemini
Grok
Perplexity
Atlas
Flagship models combined for your best output
Leo
Small, fast models combined for everyday work
Why multi-model wins
The best model changes with the task. One may be stronger for code, another for long documents, research or creative thinking. Atlas and Leo combine these model families, then OneBrain decides which strengths your request needs—without asking you to compare model names, versions or benchmarks.
OneBrain looks at the intent, complexity, files, freshness needs and expected output before choosing how to respond.
A coding task, long document, research question and creative brief need different strengths. Atlas and Leo automatically combine the right ones for the output you want.
You do not need five tabs or five subscriptions. OneBrain turns the model work into one continuous conversation with your files and memory.
Choose your OneBrain
Both combine leading model families and remove the need to choose a model yourself. The difference is whether your task needs maximum capability or maximum speed and efficiency.
Most capable
Atlas combines the highest-capability models from ChatGPT, Claude, Gemini, Grok and Perplexity. OneBrain finds the strongest model mix for strategy, research, difficult reasoning and high-value work, then delivers one unified answer.
Fast & efficient
Leo combines smaller, faster models from the same leading AI families. OneBrain chooses the best combination for writing, summaries, documents and daily questions—giving you a useful answer with shorter waits and more efficient credit use.
Simple comparison
Multi-model is the easiest default. Single-model access is still available when you already know exactly what you want.
Prefer one specific model?
Atlas and Leo save you from finding the best model yourself. But if you already prefer one provider, ChatGPT, Claude, Gemini, Grok and Perplexity are also available to buy and use directly inside the same workspace.
Reasoning, coding and versatile creation
Choose ChatGPTLong documents and nuanced writing
Choose ClaudeMultimodal understanding and analysis
Choose GeminiDirect thinking and fresh perspectives
Choose GrokWeb research and source-led answers
Choose PerplexityNot sure which to buy? Start with Leo for everyday work or Atlas when you want the strongest combined experience.
One workspace. Your choice.
Tell Atlas or Leo what output you need and let OneBrain find the best model combination. Or choose any individual model whenever you want direct control.
Start using OneBrain