A focused shortlist through OpenRouter
Free AI chat.
Better model choices.
Useful AI tools for writing, coding, and everyday questions. Start with free models, then compare paid GPT, Claude, Gemini, and DeepSeek options when your task needs more.
No account required · Shared daily capacity · Text conversations
A practical AI workspace
Choose a useful tool, understand its limits, and get to work.
Free text chat
Talk to selected free models. Responses stream as they arrive, and you can stop or retry a response.
Help with code and writing
Explain a function, draft an email, outline an idea, or work through a problem with an AI assistant.
Transparent comparisons
See free and paid options separately, with token prices and provider links. Premium API access is never mislabeled as free.
Switch models
Choose from a focused shortlist instead of hundreds of similar options. Auto selects an available free model for your task.
Control your chat history
Chats are saved in this browser. Export them, restore archived chats, or delete local history in settings.
No subscription required
Browse the directory and use shared free chat capacity without an account. Free provider capacity is limited and can be busy.
Can paid AI tools be used for free?
Some services offer a free tier, but that does not make their premium API models free. Nexus separates free endpoints from paid models so you can compare real costs. Google Gemma, for example, is a different model family from Gemini.
Read the free AI tools guideIs Nexus free?
Nexus does not charge a subscription in this release. Chat uses shared free OpenRouter capacity. Limits and provider availability apply.
Can I use ChatGPT or Claude for free here?
Paid GPT and Claude models are listed for comparison. They are not unlocked as free chat. The directory checks current OpenRouter availability.
Where are my conversations saved?
In your browser on this device. They do not sync across devices. Your messages also go to OpenRouter and the chosen provider when you send them.