1AI: AI Chatbot & Writer

1AI: AI Chatbot & Writer is a mobile AI assistant that combines many leading models in one app, including GPT-5, o4-mini, GPT-4o, Claude 4.5, Gemini 3, and more. Instead of paying for multiple subscriptions, you can access 250+ AI models through a single interface on iPhone and iPad.

Chat, writing, and editing

Use 1AI for everyday text work—from quick messages to longer documents.

• Draft and rewrite emails, posts, articles, and essays
• Improve clarity, tone, and structure
• Check grammar and style
• Generate ideas, outlines, and content plans

Research, learning, and productivity

1AI can help you process information faster and understand complex topics.

• Find and summarize long materials
• Create study notes and concise briefs
• Explain difficult concepts in plain language

Text-to-image generation

In addition to text, 1AI supports generating images from prompts.

• Create quick visual concepts and illustrations
• Produce visuals for posts and presentations without switching apps

The app supports multiple languages, is free to download, and offers optional in-app purchases.