ChatGPT Alternatives 2026: 5 Rivals Compared

ChatGPT still owns the biggest slice of the market. In May 2026 it drew 53.9% of worldwide web visits among seven major AI assistants, according to Similarweb data reported by Search Engine Journal. Yet the case for looking at ChatGPT alternatives has rarely been stronger. OpenAI now sells Pro tiers at $100, $200 and $500 a month, and four rivals shipped new models within weeks of each other.