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
AI search with citations + Deep Research
Unlike traditional chatbots, Perplexity searches the web in real-time and provides cited sources for every answer, making it a reliable research tool. Deep Research mode conducts multi-step investigations. Best for anyone who needs accurate, sourced answers rather than generated text.
Visit perplexity.ai (no account needed for basic use) → Ask a question to get sourced answers → Try Deep Research for in-depth multi-step analysis