OpenAI's conversational AI assistant for writing, brainstorming, coding, analysis, and everyday questions. The free tier includes GPT-class models, file uploads, and image generation with daily limits.
FreemiumFree planAPIGeneral-purpose

Chat with millions of user-created AI characters for entertainment, language practice, and storytelling. Free to use with an optional subscription.
OpenAI's conversational AI assistant for writing, brainstorming, coding, analysis, and everyday questions. The free tier includes GPT-class models, file uploads, and image generation with daily limits.
Anthropic's AI assistant known for thoughtful long-form writing, coding, and analysis of large documents. Free tier available; paid plans unlock higher limits and the most capable models.
Google's AI assistant built into Search, Gmail, and Docs, with a standalone chat app for writing, research, and image generation. Generous free tier with a Google account.