We’re excited to announce that ChatGPT 5.1 is now available on Chat-O in the Power tier. This latest model from OpenAI brings enhanced reasoning, improved instruction following, and faster response times.
In our testing, ChatGPT 5.1’s performance has been really good and on par with state-of-the-art models. What stands out is how human it feels in conversation. The responses feel more natural, with better understanding of context and nuance. It handles complex reasoning tasks well and maintains consistency across longer conversations.
You have two ways to access ChatGPT 5.1 on Chat-O:
Select “Advanced” mode and then choose OpenAI GPT 5.1 specifically from the model list. This gives you direct control, letting you use GPT 5.1 exclusively for your conversations. Perfect when you want to test the model directly or have a specific preference.
Stick to Power mode and GPT 5.1 will be part of the model fleet helping you automatically. In Power mode, our intelligent system selects the best model for each task, and GPT 5.1 is now part of that selection. This means you’ll benefit from GPT 5.1’s capabilities when it’s the right tool for the job, alongside other top-tier models.
Both options give you access to this powerful model. Advanced mode is ideal when you want to work with GPT 5.1 directly, while Power mode leverages it as part of an intelligent multi-model approach that adapts to your needs.
👉 Create an account or log in to try ChatGPT 5.1. New users receive 1,000 free credits to explore all our models.
Stay tuned for more model updates. We’re constantly adding the latest AI models to keep Chat-O at the cutting edge.