Side-by-side comparison of free tiers, features, privacy, and company background. Updated for 2026.
GPT-4o with browsing, uploads, image gen
The most popular AI chatbot with over 100 million users, offering GPT-4o with web browsing, file uploads, image generation, and a growing plugin ecosystem. The free tier gives limited but meaningful access to the best features. Best for general-purpose AI assistance across any topic.
Visit chat.openai.com → Sign up with email or Google → Start chatting with GPT-4o, upload files, or generate images
Anonymous AI chat — GPT-4o mini, Claude Haiku, Llama, no account
DuckDuckGo routes queries to GPT-4o mini, Claude Haiku, Llama, and Mistral while stripping your identity — no account needed, no logs tied to you. Best for users who want frontier chatbots without creating yet another account or surrendering data.
Visit duck.ai → Pick a model (GPT-4o mini, Claude Haiku, Llama, Mistral) → Start chatting anonymously with no signup