Rixx

ChatGPTFree

The world's most-used AI chat

The tool that made AI assistants mainstream — and still the most broadly capable for everyday use. Best-in-class for general knowledge, coding, content drafting, data analysis, and image generation via DALL·E 3. Four years of model improvement and a vast plugin and GPT ecosystem give it a feature lead that's hard to catch up to.

ClaudeFree

Deep reasoning & long-context chat

Anthropic's AI assistant — the one most often cited by professionals who care about depth. Exceptional at long-document analysis, nuanced conversation, research synthesis, and tasks requiring genuine reasoning rather than pattern-matched confidence. Widely used by writers, analysts, lawyers, and engineers who need an assistant that's careful, not just fast.

DeepSeekFree

Frontier AI at a fraction of the cost

A Chinese-developed frontier model matching GPT-4o quality on most benchmarks — and the R1 reasoning model is a genuine rival to OpenAI's o1 for mathematical and logical problem-solving. Free to use at deepseek.com, with an API priced at roughly one-tenth of OpenAI's rates and full OpenAI compatibility for painless migration.